15. conjugated dienes routinely undergo 1,2 and 1,4 addition reactions with a variety of electrophilic reagents; this suggests that ___ are likely intermediates during these reactions

Answers

Answer 1

Conjugated dienes routinely undergo 1,2 and 1,4 addition reactions with a variety of electrophilic reagents; this suggests that electrophilic reagents are likely intermediates during these reactions.

Two double bonds and one single bond divide a conjugated diene into two halves. Nonconjugated (Isolated) Dienes have more than one single bond separating two double bonds. Two double bonds are joined to the same atom to form cumulated dienes.

Reagents that function by acquiring electrons or sharing electrons that once belonged to a foreign molecule are referred to as electrophilic reagents, or electrophiles, in some cases. Electrophiles are molecules with a positive charge and a lack of electrons that can react by exchanging electron pairs with nucleophiles, which have many electrons. Epoxides, hydroxy amines, nitroso and azoxy derivatives, nitrenium ions, and elemental sulfur are significant electrophiles.

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Related Questions

Which of the following is true: A. Gamma rays are too dangerous to be used in a medicinal way. B. Gamma radiation is used commonly used in smoke detectors C. Gamma radiation should never be used on food products. D. Gamma radiation is frequently used on food to kill bacteria.

Answers

Answer:

D

Explanation:

Gamma radiation penetrates the cell wall of prokaryotic organisms such as bacteria and can inhibit their metabolic functions as well as destroy their DNA.

Debunking the other answers:

A is incorrect as Gamma radiation is used in the treatment of cancer via radiotherapy.

B is incorrect as Gamma rays are too small and would just penetrate any smoke particles.

C is incorrect because Gamma rays are used to disinfect food products to prevent food borne illness. Irradiation is safe to use on food and does not make it radioactive.

Thus, D is correct.

3h2so4 2b(oh)3 - b2(so4)3 6h2o what is the mole ratio between water and sulfuric acid?

Answers

Since there is an equal number of each element in the reactants and products of 3H2SO4 + 2B(OH)3 = B2(SO4)3 + 6H2O, the equation is balanced.

What is Sulfuric acid?Sulfuric acid (H2S04) is a corrosive substance, that destroys the skin, eyes, teeth, and lungs. Severe vulnerability can result in death. Workers may be harmed from disclosure to sulfuric acid. The level of exposure depends on The sulfuric acid bleaching can substitute the presently assumed oxygen and chlorine stages if the additives are allowed. This bleaching process was also practical for oxygen-bleached hardwood kraft pulp, but it was less compelling for softwood kraft pulp and oxygen-bleached softwood kraft pulp.Disbanding sulfuric acid in water is an exothermic procedure. When sulfuric acid is mixed with ice this exothermic procedure causes the temperature to rise at first, but as more of the ice dissolves, the temperature falls.

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How much 0. 5mna2so4 solution will completely precipitate the ba2 in 0. 7l of 0. 13mbacl2 solution?

Answers

The volume required to precipitate 0.7l of 0.13 m BaCl2 is 0.04L.

Calculations of number of moles for given molarity of solution

we use

Molarity =Moles of solute / volume of solution (in litre)

Now, for barium ions

Given,

Molarity of solution = 0.13 m

Volume of solution = 0.7L

By substituting all the value ,we have

Moles of Barium = 0.7 × 0.13

= 0.091

Chemical equation

BaSO4 » Ba2+ + So2-

By stoichiometry of equation

1 mole of sulphate ion precipitate 1 mole of barium ion

So, 0.091 mole of sulphate ion precipitate

0.091 of moles of Barium ion

Calculation of volume of sulfate ion

Now, calculate the volume of ions by using equation as given above

Mole of sulphate ion = 0.091 mol

Molarity concentration of sulphate ions = 0.05m

By substituting all value , we get

C = n / V

V = n/ C

= 0.091 / 0.5 = 0.04L

Thus, we calculated that the volume required to precipitate 0.7l of 0.13 m BaCl2 is 0.04L.

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H2o is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place?

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H2o is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. Gaseous state to liquid state has most likely take place.

In the gaseous state, molecules of water are far away. Hence intermolecular forces are weak.

But when water vapours changes into liquid state molecules start coming closer. And hence intermolecular forces become strong.

Due to this entropy of water molecules decreases.

Thus from above we concluded that when water vapour changes into liquid its molecules is slow down.

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does anyone know the answer to this? is it A?

Answers

Answer:

1/2     ( the two answers given are not FRACTIONS)

Explanation:

Moles of  CH3OH   = 128 gm / 32 gm / mole   = 4 moles

Moles of water   72 gm / 18 gm /mole = 4

Mole fraction of CH3OH  =   4 / ( 4+4) = 4/8 = 1/2  

Determine the number of moles of aluminum in 2. 154 x 10-1 kg of al.
a. 5.816 mol
b. 7.984 mol
c. 6.02 x 1023 mol
d. 4.801 mol
e. 8.783 mol

Answers

The moles are the estimation of the quantities like the molecules and the atoms. There are 7.984 moles of aluminum present in the 2.154 × 10⁻¹ kg substance. Thus, option b is correct.

What are moles?

The moles give the estimation of the smaller entities by the ratio of mass or weight to the molar mass of the substance.

The formula for moles is given as,

Moles = mass ÷ molar mass

Given,

Mass of aluminium = 2.154 × 10⁻¹ kg = 2.154 × 10² gm

Molar mass of Al = 26.9 g/mol

Substituting values above:

Moles = 2.154 × 10² gm ÷ 26.9 g/ mol

= 7.984 mol

Therefore, option. 7.984 moles of aluminum are present.

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In the laboratory, a student dilutes 18. 9 ml of a 10. 0 m perchloric acid solution to a total volume of 250. 0 ml. what is the concentration of the diluted solution? concentration = m submit answer

Answers

The concentration of diluted solution is 0.756M.

From the question given above, the following data were obtained:

Volume of stock solution (V1) = 18.9 mL

Molarity of stock solution (M1) = 10 M

Volume of diluted solution (V2) = 250 mL

Molarity of diluted solution (M2) =?

We can obtain the molarity of the diluted solution by using the dilution formula as shown follow:

M1V1 = M2V2

10 × 18.9 = M2 ×250

189 = M2 × 250

Divide both side by 100

M2 = 189 / 250

M2 = 0.756 M

Therefore, the molarity of the diluted solution is 0.756 M.

Thus the concluded that concentration of the dilute acid is 0.756 M.

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What eventually happens to a gas if its pressure is increased?​

Answers

Answer:

According to Boyle's law pressure of a particular amount of gas is inversely proportional to the volume of the gas.So, when we increase the pressure of the gas the volume of the gas decrease and the gas start to condense.Thus if the pressure of a gas increases it starts to condense.

Explanation:

Hope It Helps!!!!

Answer:

See belwo

Explanation:

First it becomes a compressed gas.... further pressure will cause it to condense into a liquid.

The oxygen used for preheating and the fuel gas are combined in the ____ chamber before burning.

Answers

Answer:

Mixing chamber

The coefficient of performance (cop) of a refrigerator is defined as the ratio of?

Answers

The coefficient of performance (cop) of a refrigerator is defined as the ratio of " the work necessary to heat or cool something usefully."

The usable heating or cooling delivered to work required ratio, also known as the coefficient of performance, or COP, of a heat pump, refrigerator, as well as air conditioning system. Higher efficiency, less energy (power) usage, and thus reduced operational costs are all related to higher COPs.

Coefficient of performance formula:

[tex]K = Q_{H} / W_{in}[/tex]

where, K = Coefficient of performance, [tex]Q_{H}[/tex] = heat of pumps output, [tex]W_{in}[/tex] = work required by the system.

It is refrigeration's coefficient of performance (COP) will always be greater than 1.

Therefore, the coefficient of performance (cop) of a refrigerator is defined as the ratio of " the work necessary to heat or cool something usefully."

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Why do the planets in our solar system orbit in approximately the same plane around the sun?

Answers

The orbits of the planets are coplanar because during the Solar System's formation, the planets formed out of a disk of dust which surrounded the Sun. Because that disk of dust was a disk, all in a plane, all of the planets formed in a plane as well.

http://curious.astro.cornell.edu/about-us/57-our-solar-system/planets-and-dwarf-planets/orbits/242-why-do-all-the-planets-orbit-in-the-same-plane-intermediate

Rutherford’s gold foil experiment gave evidence that an atom is mostly empty space. true false

Answers

The given statement is true .

What is Rutherford’s gold foil  experiment?A piece of gold foil was hit with alpha particles, which have a favorable charge. Most alpha particles went right around. This showed that the gold particles were mostly space.The Rutherford gold leaf investigation supposed that most (99%) of all the mass of an atom is in the middle of the atom, that the nucleus is very small (105 times small than the length of the atom) and that is positively captured.For the distribution experiment, Rutherford enjoyed a metal sheet that could be as thin as practicable. Gold is the most malleable of all known metals. It can easily be converted into very thin sheets. Hence, Rutherford established a gold foil for his alpha-ray scattering experimentation.

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If a parcel of air has a temperature of -1. 1c, what is saturation mixing ratio for this parcel?

Answers

The saturation mixing ratio for this parcel is 3.5

Saturation mixing ratio:

The value of the mixing ratio of saturated air at the specified temperature and pressure; a thermodynamic function of the state.

A thermodynamic diagram can be used to directly read this value. The saturation mixing ratio speaks of saturation in relation to a plane surface of pure water without any other qualifier. Additionally, saturation mixing ratios can be defined in relation to a flat ice surface.

The mass of water vapor to the mass of dry air (Md) in a parcel of air at saturation is known as the saturation mixing ratio. In other words, the saturation mixing ratio is the most water vapor a package can contain without condensing. The saturation mixing ratio on the Skew-T is represented by the mixing ratio line that passes through the temperature.

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The _____ is the mass of tissue lying beside the fetus that allows nutrients and oxygen to pass from the mother's blood to the baby's blood

Answers

A sizable organ that grows during pregnancy is the placenta. It is typically at the top or side of the uterine wall where it is attached. The placenta and your baby are joined by the umbilical cord. Through the placenta's filtering of the mother's blood and the umbilical cord, your baby receives oxygen, glucose, and other nutrients.

A sizable organ that grows during pregnancy is the placenta. It is typically at the top or side of the uterine wall where it is attached. The placenta and your baby are joined by the umbilical cord.

Blood from the mother filters oxygen, glucose, and other nutrients before traveling via the placenta and reaching your baby through the umbilical cord.

Blood from the mother filters oxygen, glucose, and other nutrients before traveling via the placenta and reaching your baby through the umbilical cord. Additionally, the placenta filters out elements that can be dangerous to your unborn child and eliminates waste products and carbon dioxide from your unborn child's blood.

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There are 4 gleeks in a glook, 7 glooks in a gluck, and 5 glucks in a glack. how many gleeks are in 4 glacks?

Answers

Answer:

9

Explanation:

because there are 4 gleeks and 5 Gluck's in a glack

How many neutrons are needed to initiate the fission reaction? u92235 ?10n⟶te52137 zr4097 210n

Answers

Neutrons are required. Atomic Radiation, Nuclear Graphite, and Effects

The fission reaction is often started by an impinging neutron, and each fission produces an average of 2.5 neutrons.

With the exception of the hydrogen nucleus, which has a single proton, neutrons are necessary for the stability of nuclei. Nuclear fission and fusion generate a tonne of neutrons.

Scattering tests and research on nuclear binding energies provide evidence for the nuclear forces' finite range. The neutron-proton (n-p) potential energy map in Figure 44.3a, which was created by scattering neutrons from a target containing hydrogen, illustrates the short range of the nuclear force. The n-p potential energy well is 40 to 50 MeV deep, and the nucleons are prevented from getting much closer than 0.4 fm by a strong repulsive component.

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We need to add one neutron to initiate the fission reaction.

What are nuclear reactions?

The reaction in which the identity or characteristics of an atomic nucleus change due to the bombarding of it with an energetic particle is known as a nuclear reaction.

The bombarding particle can be an alpha particle, a gamma-ray photon, a neutron, a proton, or a heavy ion.

What is nuclear fission?

In nuclear fission, an atom splits into lighter nuclei due to the bombarding of an energetic particle.

The reaction given is

[tex]_{92}^{235}U + .... _{0}^{1}n \rightarrow _{52}^{137}Te + _{40}^{97}Zr +_{0}^{1}n[/tex]

To find the number of neutrons we have to balance the reaction

Atomic mass on reactant side = 235 + 1 = 236

The atomic number on the reactant side = 92

Atomic mass on the products side = 137+97+2 = 236

The atomic number on the products side = 92

As the reaction is already balanced

We need to add one neutron to initiate the fission reaction.

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9.0 mol Na2S can from 9.0 mol CuS and 8.0 mol CuSO4 can form 8.0 mol Cus.
What mass of Cus forms during the reaction?
Cus; 95.62 g/mol

Answers

Answer:

765.0 grams CuS

Explanation:

The limiting reagent is the reactant which completely reacts before the other reactant(s) is used up. When 9.0 moles Na₂S and 8.0 moles CuSO₄ react, it appears that CuSO₄ is the limiting reagent. You can tell because it results in the production of less product.

You can determine the mass of CuS by multiplying the moles by the molar mass. It is important to arrange the ratio in a way that allows for the cancellation of units.

Molar Mass (CuS): 95.62 g/mol

8.0 moles CuS               95.62 g
-------------------------  x  -----------------------  =  765.0 grams CuS
                                         1 mole

Sodium hydrogen carbonate were disolved in 10cm cubed of water in a boiling tube . Lemon juice was then added dropwise with shaking until there was no further observable change. Explain the observation which was made in the boiling tube when the reaction was in progress.

Answers

The observation is the evolution of carbon dioxide gas.

Acid-base reaction

Sodium hydrogen carbonate is a base while lemon juice contains an acid known as citric acid.

Thus, the reaction in the illustration is involving an acid and a base.

Sodium hydrogen carbonate goes by the formula: NaHCO₃

Citric acid goes by the formula: C₆H₈O₇

The reaction between the two goes thus:

[tex]3 NaHCO_3 + C_6H_8O_7 --- > 3 H_2O + 3 CO_2 + Na_3C_6H_5O_7[/tex]

The carbon dioxide gas is evolved from the reaction vessel in the form of bubbles.

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Sample Response: The change in her position (from beginning to end), along with the direction, is considered her displacement. This value is a measurement and a direction. The total distance along the path from her starting point to her end point is considered her distance. This value is a measurement only. What did you include in your response? Check all that apply.

Answers

The sample response given in the question is right. Displacement is the shortest distance between the initial and final points of a body. Distance is the length of actual path of the body between initial and final positions.

To find the answer, we need to know more about the distance and displacement.

How distance differ from displacement?Displacement is the shortest distance between the initial and final points of a body.It is the change in position with a fixed direction.Displacement is a vector quantity and can be positive, negative or zero values.Distance is the length of actual path of the body between initial and final positions.It's a scalar quantity and it can be positive or zero.The magnitude of displacement is less than or equal to the distance travelled.

Thus, we can conclude that the given sample response is right.

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Hello people ~
Volume of one mole of any gas at NTP is
(a) 11.2 litre
(b) 22.4 litre
(c) 10.2 litre
(d) 22.8 litre

Answers

Answer:

Volume of one mole of any gas at NTP is

(b) 22.4 litre

Answer:

22.4L

Explanation:

One mole of any gas at STP weighs 22.4L.

STP stands for Standard Temperature and pressure

273.15KPressure 1atm

Given substances f2, kr, cl2 and hbr rank them with respect to the highest boiling point?

Answers

The Hbr has highest boiling point followed by Kr , [tex]Cl_{2}[/tex] and [tex]F_{2}[/tex] .

The Hbr has  highest boiling point due to presence of intermolecular H-bonding that is hydrogen bonding.

The electronegativity of bromine is greater than hydrogen atom. The electronegativity difference hydrogen atom and bromine atom is high. So, due to this a positive dipole is generated at hydrogen atom and partial negative charge, these partial charge is called dipole. In a HBr molecule one H-atom attracted by Br-atom of another atom by force of attraction and this partial force of attraction is called H-bonding.

Other all given molecules are arrange according to its molecular mass because boiling points is directly proportional to the molecular mass of molecule.

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13. Which compound reacts third fastest with fuming sulfuric acid? a. Toluene b. Chlorobenzene d. Nitrobenzene e. Benzene c. Aniline.

Answers

Toluene compound reacts third fastest with fuming sulfuric acid.

The reaction is attached in figure -

When nitration of toluene is carried out in presence of fuming nitric acid and fuming sulfuric acid under 333 K temperature , 2, 4, 6-trinitro toluene is the final product .This 2, 4, 6-trinitro toluene is also called TNT. TNT is used as explosive.

What is toluene?

Toluene is a common ingredient in degreasers. It's a colorless liquid with a sweet smell and taste. It evaporates quickly. Toluene is found naturally in crude oil, and is used in oil refining and the manufacturing of paints, lacquers, explosives (TNT) and glues.

What is a toluene used for?

Toluene is found naturally in crude oil, and is used in oil refining and the manufacturing of paints, lacquers, explosives (TNT) and glues. In homes, toluene may be found in paint thinners, paintbrush cleaners, nail polish, glues, inks and stain removers.

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What is the molar mass of a protein if a 0. 30 l of solution containing 0. 45 g of the protein has an osmotic pressure of 0. 80 torr at 25∘c?

Answers

The molar mass of a protein if a 0. 30 l of solution containing 0. 45 g of the protein has an osmotic pressure of 0. 80 torr at 25∘c is 0.348 g/mol

Here we can apply the formula ∏ = iMRT, where ∏ = osmotic pressure = 0.80 - ( given ). This is only one part of the information we are given / can conclude in this case ....

i = van’t Hoff factor = 1 for a protein molecule,

R = gas constant = 62.36 L torr / K-mol,

T ( temperature in Kelvin ) = 25 + 273 - conversion factor C° + 273 = 298K

( Known initially ) ∏ = osmotic pressure = 0.80 torr

besides the part " M " in the formula, which we have no information on whatsoever, as we have to determine it's value.

_____

Substitute derived / known values to solve for M ( moles / liter ) -

∏ = iMRT

⇒ 0.80 = ( 1 )( M )( 62.36 )( 298 )

⇒ 0.80 = M( 18583.28 )

⇒ M = 0.80 / 18583.28 ≈ 4.3049 ....

_____

We know that M = moles / liter, so we can use this to solve for moles, and hence calculate the molar mass by the formula molar mass = g / mol -

M = mol / l

⇒ 4.3049 = 0.045 / 25 mL ( 0.030 L ),

0.045 / 0.030 = 1.5 g / L

⇒ 1.5 g = 4.3049 moles,

molar mass = 1.5 g = 4.3049 moles = 0.348 g / mol

Thus the concluded that the molar mass of protein is 0.348 g / mol.

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How much naoh (in mg) is needed to prepare 546 ml of solution with a ph of 10. 00?

Answers

2.18 mg of naoh is needed to prepare 546 ml of solution with a ph of 10.00.

What is Molarity?

The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another name for molarity.

We want pOH 4 NaOH solution

Given, pH (10) convert to pOH

pOH = 4; pOH = -log (OH⁻) = 1 x 10⁻⁴ M = NaOH

Once we have got the Molarity = Moles of NaOH/Litre of soln.

Stoich = 1 x 10⁻⁴ M/L X 0.546 L X 40 g NAOh/1 mol

Naoh = 2.18 X 10⁻³ g NaOH = 2.18 mg

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24. 00 ml of a 0. 25 m naoh solution is titrated with 0. 10m hcl. What is the ph of the solution after 24. 00 ml of the hcl has been added?.

Answers

The pH of the solution is 12.88.

Calculation:

millimoles of NaOH = volume x Molarity

                                 = 24.00 mL x 0.25 M

                                 = 6.00 mmole

millimoles of HCl = 24.00 mL x 0.10 M

                            = 2.40 mmole

Total volume = 48.00 mL

                           

                            NaOH + HCl   →     NaCl + H2O

initial                       6.00      0               0         0

added                                 2.40

change                   -2.40  -2.40      +2.40  +2.40

equilibrium               3.60    0           2.40    2.40

The pH is determined by the excess of NaOH present.

[NaOH] = millimoles/volume

            = 3.60/48.00

            = 0.075 M

pOH = -log (OH⁻).

        = -log (0.075)

        = 1.12

Then

pH + pOH = pKw = 14.00.

pH = 14 - pOH

pH = 14 - 1.12

pH = 12.88

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In the malate–aspartate shuttle, electrons are transferred from _____________ to form malate.

Answers

In the malate–aspartate shuttle, electrons are transferred from oxaloacetate to form malate.

A crucial mechanism employed by mitochondria, the malate-aspartate shuttle system, also known as the malate shuttle, enables electrons to pass through the impermeable membrane separating the cytosol as well as the mitochondrial matrix. Glycolysis produces the electrons which are required for oxidative phosphorylation.

The liver, heart, as well as kidney, include the malate-aspartate shuttle, which produces about three molecules of ATP for every cytosolic NADH molecule.  Under aerobic conditions, it constitutes quantitatively the most significant shuttle for such reoxidation of cytosolic NADH in vertebrate tissues.

Therefore, In the malate–aspartate shuttle, electrons are transferred from oxaloacetate to form malate.

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What substance is produced at the cathode during the electrolysis of molten calcium bromide, cabr2cabr2? assume standard conditions

Answers

Magnesium (Mg) metal is the substance produced at the cathode.

As molten calcium bromide is electrolyzed, calcium (Ca) metal is the substance produced at the cathode.

Due to the fact that oxidation always takes place at the anode and reduction always occurs at the cathode,

Consider the two cations that were produced in the two ionisation processes of the two substances: mathrm Ca +2 and mathrm Mg +2. The following is how to express two cations' potential cathode reactions:

[tex]ca { }^{ + 2} + (aq) + 2e {}^{ - } - > \\ ca(s)E {}^{0} _{ca {}^{ + 2} \div ca } = - 2.87v[/tex]

[tex] Mg{ }^{ + 2} + (aq) + 2e {}^{ - } - > \\Mg(s)E {}^{0} _{Mg {}^{ + 2} \div Mg} = - 2.37v[/tex]

[tex] Mg^{ + 2} [/tex]

will be reduced quickly since it has a low electronegative electrode potential.

Thus, magnesium (Mg) metal is the substance produced at the cathode.

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If you halve the volume of a constant amount of gas at a constant temperature, what happens to the pressure?

Answers

According to Boyle's law, If one halves the volume of a constant amount of gas at a constant temperature, the pressure will be doubled.

What is Boyle's law?

Boyle's law is one of the gas laws that states that the pressure of an ideal gas is inversely proportional to its volume at constant temperature.

Boyle's law equation can be represented as follows:

P = KV

This law suggests that as the pressure of a gas increases, the volume decreases.

Therefore, in accordance with Boyle's law, If one halves the volume of a constant amount of gas at a constant temperature, the pressure will increase times 2 or double.

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When a substance is entering a phase change, the gain or loss of heat is a result of:______.

Answers

When a substance is entering a phase change, the gain or loss of heat is a result of energy gained or lost in forming or breaking intermolecular interaction.

The constant temperatures occur when a substance is undergoing a phase transition.  If heat is removed from a substance , such as in freezing and condensation , then the process is exothermic . In this instance , heat is decreasing the speed of the molecules causing then move slower.

Example : liquid to solid and gas to liquid .

These changes release heat to the surrounding.

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A mass spectrum for propane will have its largest peak at what number? (ie-mass of propane)

Answers

A mass spectrum for propane will have its largest peak at 44 number.

Mass spectrum

.An analytical method for determining the mass-to-charge ratio of ions is mass spectrometry (MS). The findings are displayed as a mass spectrum, which is a plot of intensity against the mass-to-charge ratio. Mass spectrometry is utilized in a wide range of disciplines and can analyze both pure materials and intricate mixtures. A visualization of the ion signal as a function of the mass-to-charge ratio is known as a mass spectrum. The masses of particles and molecules in a sample, as well as the chemical identity or structure of molecules and other chemical compounds, are all determined using these spectra.

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Other Questions
A mass weighing 16 pounds is attached to a spring whose spring constant is 25 lb/ft. what is the period of simple harmonic motion? When a firm is producing the quantity where the price is equal to the marginal cost of producing additional goods, the firm can be described as________. Identify the adverb phrase in the following sentence:The boy on the beach threw the stone into the sea. The doctrine of strict liability may be distinguished from that of a negligence by the fact that strict liability:_____. What type of data clarifies the order of causality between mobile phone adoption and income growth? What are the points if the slope is 4 and the point is (1,-1) In the figure below, angle y and angle x form vertical angles. Angle y forms a straight line with the 60 angle and the 70 angle. A straight line is shown and is marked with three angles. The first angle measures 60 degrees. The second angle measures 60 degrees. The third angle is labeled y. The line between the 70 degree angle and angle y extends below the straight line. The angle formed is labeled angle x. Write and solve an equation to determine the measure of angle x. When there are not enough legitimate opportunities open to satisfy all who seek to achieve valued goals, ___________ exists. Could someone check my work? Thank you!Now pretend you are Pauls sister from the paragraph above. REWRITE the following sentences in the pass compose as if she were telling the story. Be sure to change ALL the verbs into the pass compos using the correct helping verb. Make the past participles agree if necessary. 1. Jcris souvent des cartes postales mes amies.Jai crit souvent des cartes postales mes amies. 2. Mon frre va au magasin; je reste chez nous.Mon frre est all au magasin; je suis rest chez nous. 3. Mon frre achte des cartes que jaime bien.Mon frre a achet des cartes que jai aim bien. 4. Il rentre plus tard que le facteur.Il a rentr plus tard que le facteur. 5. Je ne suis pas fche parce que mon frre ne court pas vite.Je nai pas fch parce que mon frre ne a couru pas vite. The cardiogenic mesoderm is induced by _______ in the anterior endoderm and _______ in the splanchnic mesoderm In the figure below, t= 133 . Find the measures of all remaining angle. You are using 2 effective methods of birth control in the month after your last dose. your partner's male latex condom breaks. You would? The rate of inflation in the fictional land of sardonia is such that the price of a car costing 24000 dollars in u.s. currency will double in eleven years. what is the annual rate of inflation? what will be the price of this car in five years? Read the article Skara Brae:Skara Brae is one of the oldest historical sites in Europe, and it stayed hidden for more than 4,000 years. The ancient village of Skara Brae was discovered on the main island of Orkney, in Scotland. A massive storm in 1850 removed the sand that had covered it for thousands of years, exposing the remains of a small village.Skara Brae is a collection of eight round, stone houses that still have their stone furnishings and even some of the belongings of the inhabitants. The contents can tell us a great deal about how people lived in what is called the Neolithic era, or the last period of the Stone Age. Seven of the eight houses appear to have been family homes, with beds, dressers, fireplaces, and even simple toilets. The eighth house may have been a community workshop. It shows evidence of tool-making and the use of a large fire pit.How was Skara Brae built, and what, eventually, happened to it? Let's journey back in time through the evidence archaeologists have put together to understand the story of Skara Brae.The small, stone village was built some time around 3100 BCE. The first villagers dug down into an existing midden heap, or trash heap, to build the foundations of their homes. The garbage helped to insulate and protect the homes. They built their round huts with stones found locally, sticking each piece together with a paste made from ground-up waste and dung.After the houses were built, the villagers furnished their homes with stone beds, one on each side of the door, a stone dresser, and a fireplace, or hearth. The hearth kept the home warm and allowed the inhabitants to cook their food.The people of Skara Brae then farmed the surrounding lands, with evidence suggesting that they grew barley and other grains. They kept cows and pigs, and they fished in the ocean for a good part of their diet.As the number of people grew, the village expanded. Covered tunnels and alleyways were built to connect all the homes. This would have protected people traveling from one house to another from cold winter weather. Because of the connections between the houses and the shared workspace, archaeologists believe that Skara Brae was a close-knit community.The people made many things, including pottery, stone tools, and bone jewelry. Curiously, no evidence of weaponry was ever found, leading archaeologists to believe that Skara Brae was a peaceful place.Skara Brae was inhabited for approximately six hundred years, at which point, it was abandoned. Many theories exist about what happened to the people of Skara Brae. One of the most popular theories is that a terrible storm, similar to the one that would uncover the remains of the village in 1850, struck and drove the people from their homes. This is supported by the fact that so many possessions, including valuables like jewelry, were left behind.Which supporting detail supports the main idea that the Skara Brae were resourceful buildersA. A massive storm in 1850 removed the sand that had covered it.B. Covered tunnels and alleyways were built to connect all the homes.C. Skara Brae was inhabited for approximately six hundred years.D. The eighth house may have been a community workshop.Brainliest to the best answer!!! Convert a normally distributed score of 80 with a mean of 70 and a standard deviation of 6 into a z score. In 330, Constantine moved the capital of the Roman EmpireO from Italy to EgyptO from Rome to ConstantinopleO from Constantinople to RomeO from Anatolia to Rome PLSSSS HELPPPP THANK YOUU IF YOU DOOO Which aesthetic element is normally present in low-key lighting? Followers of which political ideology mostwanted to establish governments with writtenconstitutions and elections?A. conservatism B. liberalism C. radicalism D. nationalism The three for one benefit that comes with developing playgrounds does not include?