The Cm of the Microsand concentration in the tanks when expressed in grams of Microsand per liter (g/L) is known to be 3.8 g/L.
What is Microsand?This is known to be a kind of aggregate, that is said to be exempted from clay and shale and it is one that can rightly fine to pass via a No. 100 (that is 150 µm) sieve.
Note that from the question:
The Average of six samples = 30mg/L.
Then one need to Multiply:
30 by 300gpm x 1 Train x 1700 ( this is the use of the bulk density conversion factor).
Then one need to also Divide by (4000 gpm x 2000 mL) = 1.8 g/L.
Lastly you then multiply by 2,
1.8 g/L x 2 = 3.8 g/L.
Therefore, looking at the solution above, the Cm of the Microsand concentration in the tanks is seen to be 3.8 g/L.
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With respect to bonding and electrical conductivity, respectively, sulfur hexafluoride, sf6(g), would be described as?
With respect to bonding and electrical conductivity, respectively, sulfur hexafluoride, sf6(g), would be described as "covalent and a nonconductor" because sulfur hexafluoride would be a covalent compound since neither fluorine nor sulfur are metallic elements and aqueous solutions containing covalent bonding do not conduct electricity.
What is electrical conductivity?The ability of an electrical charges or heat to move through a material is measured by its conductivity. A material is considered a conductor if it offers relatively minimal resistance to the transfer of thermal or electric energy.
The electricity is conducted by-
Particles that are electrically charged migrate, which results in electrical conductivity in metals. The existence of electron pairs, that are electrons in an atom's outer shell that really are free to move, is what distinguishes the atom of metal elements. Metals can carry an electric current thanks to these "free electrons."Valence electrons can migrate through into the lattice that makes the physical configuration of a metal because they are free to do so. Free electrons pass an electrical charges as they move through metal in an electric field, resembling billiard balls striking one another.To know more about the Electrical conductivity, here
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What would it mean if you added liquid bromine to your final transfer hydrogenation product and the resulting mixture converted from dark maroon to clear upon heating?
For breaking alkenes, liquid bromine was utilized. When liquid bromine is added to the finished product and it turns clear, it has reacted.
The principal test used to determine the organic compound's unsaturation in a qualitative examination of organic compounds is the bromine water test. It aids in determining the compound's functional group.
Unsaturated hydrocarbons and bromine water engage in an additional process. When the double bond breaks, bromine is added. The reaction's final result has no color.
However, there is no addition reaction when bromine water combines with saturated hydrocarbons. As a result, the solution's hue is unchanged and remains brown.
So, a qualitative test for saturated and unsaturated hydrocarbons is a reaction with liquid bromine.
The presence of unsaturated hydrocarbons, or functional groups with double bonds, can be seen in the mixture when it transforms into a clear
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What laboratory conditions (temperature and pressure) were assumed when calculating ksp based on measured electrochemical potential?
The temperature of the lab is assumed at 25°C while calculating Ksp. Pressure of the lab is assumed at 1 atm normal atmospheric conditions while calculating Ksp.
If we increase the temperature of the solvent, the average kinetic energies of the molecules start increases. Hence, the solvent is more able to dislodge more molecules from the surface of the solute. Thus, by increasing the temperature the solubilities of substances also increases. Temperature is directly proportional to the solubility.
As we goes on increasing the pressure of a gas, the collision between the molecules start increasing and thus the solubility goes up, as we decrease the pressure, the number of collision decreases thus solubility goes down.
Thus, with further increase in the temperature and pressure the Ksp value changes. Thus, temperature of the lab is assumed at 25°C while calculating Ksp. Pressure of the lab is must be 1 atm normal atmospheric conditions while calculating Ksp.
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LOTS OF POINT PLS HELP!!!! What is the balanced, net ionic equation for the reaction shown below? HCI (aq) + NaOH (ag)-> NaCI (aq) +H2P(l)
The net ionic equation is written as H^+(aq) + OH^-(aq) -------> H2O(l)
What is the net ionic equation?The term net ionic equation refers to the equation that shows the ions that underwent a change in the reaction. We have to note that the reaction species here must be ionic species which are able to dissociate into ions in solutions.
Now the first step is to put down the molecular equation. The molecular equation shows the reaction of the compounds as follows;
HCI (aq) + NaOH (ag)-> NaCI (aq) +H2O(l)
Next, we put own the complete ionic reaction equation as follows;
H^+(aq) + Cl^-(aq) + Na^+(aq) + OH^-(aq) -------> Na^+(aq) + + Cl^-(aq) + H2O(l)
Next we have the net ionic equation;
H^+(aq) + OH^-(aq) -------> H2O(l)
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Which process in the nitrogen cycle converts nitrogen into its most polluting form?
The process in the nitrogen cycle converts nitrogen into its most polluting form will be "nitrification".
The biological process of nitrification turns ammonia into nitrite and nitrite into nitrate. The technique of denitrification, which turns nitrate into nitrogen gas, is such treatment option if requirements demand that the resultant nitrate be eliminated.
A surplus of nitrogen compounds could result in pollutants like ammonia and ozone that can affect plant growth, visibility, and human capacity to breathe. Excess nitrogen from the atmosphere that returns to earth could be damaging to the health of forests, soils, including streams.
Therefore, the process in the nitrogen cycle converts nitrogen into its most polluting form will be "nitrification".
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A pure element unbound or in a diatomic state, such as cl2, always has an oxidation number of ________. a. 1 b. 2 c. magnitude equal to its valence number d. 0
A pure element unbound or in a diatomic state, such as cl2, always has an oxidation number of 0 (zero).
Why does pure element or a diatomic molecule has zero oxidation state?In a neutral substance with atoms of only one element, the oxidation number of an atom is zero. As a result, the oxidation number of the atoms in O2, O3, P4, S8, and aluminum metal is 0. The oxidation numbers for an element in its normal state will be zero. O2 and Cl2 are diatomic gas molecules that occur naturally, thus when they are in that state, they have an oxidation state of zero. Metals like zinc will also have an oxidation number of zero if they are in their natural solid state.
O2 and Cl2 are neutral diatomic, hence they will always have a zero oxidation state. It is impossible for one oxygen atom to have a negative 2 charge while the other has a positive 2. The oxidation states should be 0 if the elements are solids, liquids, or any type of diatomic molecule.
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option (d) 0 is the right option.
A pure element unbound or in a diatomic state, such as cl2, always has an oxidation number of 0.
An unbound or diatomic pure element, like cl2, always has an oxidation number of 0 (zero).
Why does a diatomic molecule or pure element have zero oxidation state?The oxidation number of an atom is 0 in a neutral substance that contains solely atoms of one element. Because of this, the oxidation number of the atoms in aluminum metal, O2, O3, P4, and S8 is 0. An element will have zero oxidation numbers in its natural state. Since O2 and Cl2 are diatomic gas molecules that are found in nature, they have an oxidation state of zero while they are in that state. If a metal is in its natural solid state, it will also have an oxidation number of zero.O2 and Cl2 will always have a zero oxidation state because they are neutral diatomic. One oxygen atom cannot have a negative charge of two while the other has a positive charge of two. If the elements are solids, liquids, or any sort of diatomic molecule, the oxidation states should be 0.To learn more diatomic state visit:
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Calculate the ph of a 0.377 m solution of ethylenediamine ( h2nch2ch2nh2 ). the pa values for the acidic form of ethylenediamine ( h 3nch2ch2nh 3 ) are 6.848 ( pa1 ) and 9.928 ( pa2 ).
The final answer is 11.71
The concentration of a given solution (H2NCH2CH2NH2) is 0.314 M
pa1 = 6.848
a1 = 1.42 X [tex]10^{-7}[/tex]
Pa2 = 9.928
a2 = 1.18 X [tex]10^{-10}[/tex]
The equation is given as;
NH2CH2CH2NH2 + H2O ---> NH2CH2CH2NH3+ + OH-
Initial 0.314 0 0
Change -x +x +x
Equilibrium 0.314 -x x x
b1 = Kw / Ka2 = 10^-14 / 1.18 X 10^-10 = 8.47 X 10^-5 = [NH2CH2CH2NH3+][OH-] / [NH2CH2CH2NH2]
8.47 X 10^-5 = x^2 / 0.314 -x
8.47 X 10^-5 X 0.314 - 8.47 X 10^-5x = x^2
x^2 - 2.66 X 10^-5 + 8.47 X 10^-5x = 0
on solving
x = 0.0051 M = [NH2CH2CH2NH3+] = [OH-]
[NH2CH2CH2NH2] = 0.314 - 0.0051 = 0.3089 M
For the second dissociation,
NH2CH2CH2NH3+ + H2O ---> +NH3CH2CH2NH3+ + OH-
Initial 0.0051 0 0.0051
Change -x +x +x
Equilibrium 0.0051 -x x 0.0051 +x
b2 = Kw / Ka1 = 10^-14 / 1.42 X 10^-7 = 7.04 X 10^-8 = [+NH3CH2CH2NH3+] [OH-] / [+NH3CH2CH2NH2]
7.04 X 10^-8 = x (0.0051+x) / (0.0051-x)
We may ignore x in the denominator as b2 is very low
7.04 X 10^-8 = x (0.0051+x) / (0.0051)
3.59 X 10^-10 = 0.0051x + x^2
x = 7.039 X 10^-8 M
[OH-] = 0.0051 + x = 0.0051 approx
[+NH3CH2CH2NH3+] = x = 7.039 X 10^-8 M
NH2CH2CH2NH3+ = 0.0051 +x = 0.0051 M approx
pOH = --log [OH-] = -log 0.0051 = 2.29
pH = 14 - pOH = 11.71
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What happens to the kinetic energy of the particles in a sample of gas as
the temperature of the sample increases?
Answer:
See below
Explanation:
Temperature is basically a measure of the average kinetic energy of the particles in the sample ....so as temp goes up, kinetic energy increases
Write a balanced overall reaction from these unbalanced half-reactions. sn⟶sn2 ag ⟶ag
The balanced overall reaction from these unbalanced half-reactions is given in following steps ,
Step 1 : [tex]Sn[/tex] → [tex]Sn^{+2}+ 2e^{-}[/tex]
Step 2 : [tex]Ag^{+}[/tex] + [tex]e^{-}[/tex] → [tex]Ag[/tex]
[tex]2Ag^{+} + 2e^{-}[/tex] → [tex]2Ag[/tex]
Overall reaction : [tex]Sn[/tex] + [tex]2Ag^{+}[/tex] → [tex]Sn^{+2}[/tex] + [tex]2Ag[/tex]
The equation in which number of atoms of elements in reactant side is equal to the number of atoms of elements in product side is called balanced chemical equation .
This step is oxidation half-reaction in which loss of electron is takes place .
Second steps is reduction reaction in which fain of electrons is takes place. We multiple second half-reaction by two to make equal number of electrons in both steps to cancel out the electrons from the equation.
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20. 10 in the molecular orbital model of benzene, the six p atomic orbitals combine to form how many molecular orbitals?
The six p atomic orbitals combine to form 6 molecular orbitals. The correct option is A.
What is molecular orbital?Molecular orbitals are the functions that tell the position of an electron in the orbital and the wave like property of the electron. This function is used to find the chemical and physical property of the element.
The six p atomic electrons will combine to constitute 6 molecular pi electrons. Because in benzene there are 6 pi orbitals. As benzene is planar, hexagonal and have sp2 hybridization. The remaining cyclic orbitals overlap to create 6 pi molecular orbitals.
Thus, the correct option is A. 6.
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The question is incomplete. Your complete question is given below:
A. 6
B. 5
C. 4
D. 3
E. 2
Write out a balanced reaction equation for the reaction of hydronium ions (H3O+) with calcium carbonate
Balanced chemical equation for reaction of hydronium ions with calcium carbonate will be as follows:
2H3O+ (aq) + CaCO3 (s) => Ca2+ (s) + 3H2O (l) + CO2 (g)
In this balanced chemical equation, acidic aqueous solution of hydronium ion (H3O+) reacts with calcium carbonate salt (CaCO3) resulting in the formation of calcium cation (Ca2+) an alkali, that results in neutralization of excessive acid. It also forms liquid water (H2O) along with liberation of carbon dioxide gas (CO2). All acids stronger than hydrogen carbonate, provide their calcium salts dissolved in water yielding carbon dioxide, because a bare hydrogen ion has no chance of surviving in water.
To balance this chemical equation, 2 molecules of hydronium ions react with 1 molecule of calcium carbonate resulting in formation of 1 molecule of calcium cation, 3 molecules of water and 1 molecule of carbon dioxide. The reaction proceeds at room temperature.
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There are 30.974 grams of phosphorus in one mole. approximately how many atoms of phosphorus are there in one mole? (5.01) 6.02 × 1023 c. 6.02 × 10-23 5.145 × 10-23 d. 1.86 × 1025
There are approximately 6.02 × 10²³ atoms of phosphorus in one mole of 30.974 grams of phosphorus (option A).
How to calculate number of atoms?The number of atoms of a substance can be calculated by multiplying the number of moles of the substance by Avogadro's number. That is;
no of atoms = no of moles × 6.02 × 10²³
According to this question, there are 30.974 grams of phosphorus in one mole of phosphorus. The number of atoms can be calculated as follows:
no of moles of P = 30.974g ÷ 31g/mol = 0.99mol
number of atoms = 0.99 mol × 6.02 × 10²³
number of atoms = 6.02 × 10²³ atoms
Therefore, there are approximately 6.02 × 10²³ atoms of phosphorus in one mole of 30.974 grams of phosphorus.
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Predict the mass (in grams) of precipitate that will form if a solution containing 2.34 g of cesium hydroxide is added to a solution containing a large excess of tiso4?
The mass of precipitate formed if a solution containing 2.34 g of cesium hydroxide is added to a solution containing a large excess of tiso4 is 0.6387 g
Mass of CsOH = 2.34 g
Number of moles of CsOH = 149.9 g / mol
Molar mass of CsOH = Mass of CsOH / Number of moles of CsOH
= 2.34 / 149.9
Molar mass of CsOH is 0.0156 mol
Chemical reaction2 CsOH + TiSO4 → Ti(OH)2 + CsSO4
In this reaction 2 moles of CsOH gives 1 mole of Ti(OH)2
0.0156 mol of CsOH will produce, 0.0156 / 2 = 0.0078 mol
0.0156 mol of CsOH will produce 0.0078 mol of Ti(OH)2
Mass of Ti(OH)2 = Molar mass of Ti(OH)2 / Number of moles of Ti(OH)2
= 0.0078 * 81.88
= 0.6387 g
Mass of Ti(OH)2 formed is 0.6387 g
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The mass of precipitate formed is 0.90441 g
cesium hydroxide is added to a solution containing a large excess of TiSo4
The chemical reaction is
2CsOH + TiSo4 → Ti(OH)2 + CsSo4
The above reaction the Ti(OH)2 is a precipitate formed
Molar mass = mass of a substance / mass of one mole
Mass of CsOH = 2.34 / 149.912
Mass of CsOH = 0.0156 mol
The above reaction 2 mol of cesium hydroxide yield 1 mol of titanium hydroxide
Then, 0.0156 mol of CsOH yield 0.0156 / 2 = 0.0078 mol of Ti(OH)2
The mass of Ti(OH)2 is 115.95
0.0078 mol of Ti(OH)2 = 115.95 X 0.0078
= 0.90441
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How many moles of Ag form from 5.0 mol Zn?
Answer:
8.0 moles Ag
Explanation:
To find the moles of silver (Ag), you need to multiply the moles of Zn and AgNO₃ by the mole-to-mole ratio. This ratio is made of the coefficients from the balanced chemical equation. It is important to arrange the ratio in a way that allows for the cancellation of units.
2 AgNO₃ + 1 Zn -----> 2 Ag + Zn(NO₃)₂
^ ^ ^
5.0 moles Zn 2 moles Ag
----------------------- x ---------------------- = 10. moles Ag
1 mole Zn
8.0 moles AgNO₃ 2 moles Ag
---------------------------- x ---------------------------- = 8.0 moles Ag
2 moles AgNO₃
We needed to convert both reactants into the product because we wre not given a limiting reagent. The limiting reagent is the reactant that is completely reacted first. The limiting reagent in this reaction is AgNO₃ because it produces the smallest amount of product. As such, the actual amount of moles Ag is 8.0 moles.
Structures of compounds people use every day are shown. From which group of unsaturated hydrocarbons is each derived? 2 carbons are double bonded together, with H bonded to the left, and C H 2 bonded below left, above right, and below right. In a segment of an ongoing chain, 3 iterations of this structure are bonded together by single bonds from the bottom right C H 2 of one structure to the bottom left C H 2 of the next.
The group of unsaturated hydrocarbons which 2 carbons are double bonded together, with H bonded to the left, and C H 2 bonded below left, above right, and below right is derived from Alkenes
What are organic compounds?Organic compounds are compounds which contains carbon and hydrogen
Some few classes or organic compounds or hydrocarbons are as follows:
AlkanesAlkenesAlkynesAlkanolsAlkanoic acidKetonesEstersSo therefore, the group of unsaturated hydrocarbons which 2 carbons are double bonded together, with H bonded to the left, and C H 2 bonded below left, above right, and below right is derived from Alkenes
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Answer:
The answer is A.) Alkene
All the answers in that section are:
Alkene
Aromatic Hydrocarbon
Alkene
Alkyne
Explanation:
Here's the picture as proof. Hope it helps!
Which of the following is always equal on each side of a balanced chemical equation?
Select one:
O a. The total number of ions.
Ob. The total number of molecules.
Oc. The total number of atoms of each element.
Od. The total number of different chemical compounds.
Answer:
the total number of molecules
Answer:
C.) The total number of atoms of each element.
Explanation:
An equation is balanced when there is an equal amount of each element on both sides of a reaction. If these values are not identical, they can be changed by adding coefficients to alter the amount of each molecule. By modifying the amount of molecules within the reaction, you can make the total number of atoms of each element equal on both sides.
What is the order of reaction with respect to a and b for a reaction that obeys the rate law: rate = k[a]4[b]5?
The order of reaction with respect to a is 4 and with respect to b is 5 for a reaction that obeys the rate law.
The order of reaction is equal sum of power of concentration of the each reactant present in the reaction that obeys the rate law . The order of individual reactant or species present in the rate law is equal to the power of the of concentration of the respective species or reactant .
Example : If rate law is given as,
rate = k[tex][a]^{4} [b]^{5}[/tex]
The order of reaction with respect to a is 4 and with respect to b is 5 for a reaction that obeys the rate law.
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Draw the major product formed in the reaction involving an acid anhydride dissolved in alcohol.
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A catalyst that exists in solution with the reaction mixture is called a ______ catalyst. Multiple choice question. homogeneous intermediate enzyme heterogeneous
Answer: Homogeneous catalyst
Calculate the number of molecules present in 3.4 moles of Ammonia (NH3) [At No. N=7, H=1]
The 3.4 moles of Ammonia (NH₃) have 2.0475 x 10²⁴ molecules of it.
What is a Mole?A mole is a unit used to count the elementary particles such as atoms, molecules, or ions of a substance.1 mole has a fixed value that is 6.022 x 10²³ of something and is known as Avogadro’s number. Avogadro’s number is represented by [tex]N_A[/tex]For example, a mole of hydrogen atom means 6.022 x 10²³ atoms of hydrogen and one mole of hydrogen molecule (H₂) is equal to 6.022 x 10²³ molecules of hydrogen which also means 2 x 6.022 x 10²³ atoms of hydrogen.How to calculate the number of molecules of an atom?We know,
The number of moles is given by
[tex]n =\frac{m}{M}[/tex]
The number of molecules is the product of a number of moles and Avogadro's number[tex]N_A[/tex]
Number of molecules of NH₃ = [tex]n \times N_A[/tex]
= 3.4 x 6.022 x 10²³
= 2.0475 x 10²⁴ molecules
Hence, 3.4 moles of Ammonia have 2.0475 x 10²⁴ molecules
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The average person will absorb no more than how many mg of calcium at one time?
a. 1500
b. 500
c. 200
d. 1000
The average person will absorb no more than 500 mg of calcium at one time.
So, option B is correct one.
For maximum absorption, no more than 500 mg of calcium should be taken in a single dose. The absorption of the minerals is actually lower by taking too high an amount of calcium at one time from a supplement. Calcium is absorb from the food. If you think you need more a calcium supplement , ask your doctor or dietitian to recommend one. Taking too high amount of calcium at one time, particularly from a supplement , can actually lower the absorption of the mineral.
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18 the first step in the mechanism is the acid catalyzed generation of an enol and then electrophilic addition of bromine. which cation is formed and why?
the first step in the mechanism is the acid-catalyzed generation of an enol and then electrophilic addition of bromine and cation is formed because of the destabilization effect of the electronegativity of oxygen
The ability of an atom or functional group to draw electrons to itself is known as an electronegativity in chemistry. An atom's electronegativity is influenced by both its atomic number and how far away from its charged nuclei its valence electrons are located.
The ability of an atom to draw shared electrons in a covalent connection is referred to as electronegativity. The stronger an element attracts the shared electrons, the higher its degree of electronegativity.
The propensity of an atom to attract other atoms when it is combined is known as an element's electronegativity. Additionally, a pair of bound electrons are shared. In contrast, an element's electropositivity refers to an atom's propensity to contribute electrons while also withdrawing from covalent connections.
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Na3po4 dissolves in water to produce an electrolytic solution. what is the osmolarity of a 2. 0 × 10-3 m na3po4 solution?
When Na3po4 dissolves in water to produce an electrolytic solution. The osmolarity of a 2. 0 × 10-3 m Na3po4 solution is 0.008osmol/L.
Osmolarity is defined as the number of osmoles of solute particles per unit volume of the solution.
In other words osmolarity is the multiple if molarity
Osmolarity = i× molarity
Here i represents the van't Hoff factor,
[tex]Na_{3}PO_{4}[/tex] ⇒ [tex]3Na^{+} + PO_{4} ^{-}[/tex]
3 Moles of [tex]Na_{} ^{+}[/tex] + 1 mole [tex]PO_{4} ^{-}[/tex] = 4
The number of moles of particles of solute produced in solution are actually called osmoles.
As a result, the van't Hoff factor will be equal to
i=4 Moles ions produced (osmoles) 1mole [tex]Na_{3} PO_{4}[/tex] .dissolved =4
Since we know that,
[tex]Na_{3} PO_{4}[/tex] = [tex]2.0 * 10^{-3} M[/tex]
Osmolarity =
[tex]4*2.0*10^{-3} M[/tex] = [tex]8.0 * 10^{-3} osmol L -10s[/tex]
Thus, the Osmolarity of given solution is 0.008 osmol/L.
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Complete and balance the molecular equation, including the phases, for the reaction of aqueous potassium sulfate, k2so4 , and aqueous strontium iodide, sri2.
The complete and balanced molecular equation is-
K₂SO₄(aq) + SrI₂(aq) → KI(aq)+ SrSO₄(s)
Both sides of the reaction must have an equal amount of atoms in each element to balance the equation.
What is a balanced chemical reaction?A balanced chemical reaction is one in which both the reactant and product sides of the reaction include an equal number of atoms from each of the constituent components. For the chemical equation to adhere to the Law of the conservation of mass, it must be balanced.An equation that has the same number of each type of atom on both sides of the arrow is said to represent a balanced chemical reaction. A chemical reaction is represented symbolically in writing by a chemical equation. The chemical(s) used as the reactant(s) are listed on the left and the chemical(s) used as the product(s) are listed on the right. A chemical reaction requires an equal number of atoms in the reactants and products because, according to the rule of conservation of mass, atoms cannot be generated or destroyed throughout the process.How to balance a molecular chemical equation?First of all, identify the most complicated or complex substances.If possible, start with that material and pick an element or elements that are present in only one reactant and one product. To get the same number of atoms of this element(s) on both sides, adjust the coefficients.If polyatomic ions are present on both sides of the chemical equation, they should be balanced as a whole.The remaining atoms are then balanced, typically ending with the substance that is the least complicated and, if necessary, employing fractional coefficients. In order to get whole numbers for the coefficients if a fractional coefficient was used, multiply both sides of the equation by the denominator.To learn more about Molecular equation click on-
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Balanced molecular equation is :
K₂SO₄(aq) + SrI₂(aq) → KI(aq)+ SrSO₄(s)
What is Balanced equation?
If both the reactants and the products of a chemical reaction have the same number of atoms and total charge, the equation for the reaction is said to be balanced. In other words, the mass and charge balances on both sides of the reaction are equal.The equation must be balanced so that each type of atom appears in equal amounts on both the left and right sides of the arrow. This is accomplished by altering the compounds' coefficients (numbers placed in front of compound formulas).In an imbalanced chemical equation, the reactants and products of a reaction are provided, but the amounts required to satisfy the conservation of mass are not given.Learn more about the balanced equation with the help of the given link:
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How many grams of al2o3 (mm = 101. 96 g/mol) are produced when 91. 7 grams o2 reacts with excess aluminum?
Answer:
Explanation:
1. Write down the balanced equation
2. Use molar mass of O2 (32g/mol) divided by the given mass to derive the amount of mols
3. multiply the answer by 2/3 (divide by 3 then multiply by 2), to ensure the mols are in correct proportion
4. Use given molar mass and multiply it by the amount
5. Make sure to use proper significant digits (3 in this case) and units :)
write a careful description of a metal or an alloy . Use the correct scientific terms.
Explain which properties of metals are particularly suited to the function it has. a) The name of the instrument/ things /apparatus
b) i) If you choose an alloy: please states the name of all the metals that are consisted
in that alloy
ii) If you choose a single type of metal: Please state the metal.
c) Please include explanation in no:2 The example of properties are sonorous,
malleable and so on…..
d) please include descriptions that can fit atleast 2 slides, thank you and have a great/blessing day!
Brass is an alloy of copper and zinc and is durable, malleable and sonorous.
What are alloys?Alloys are products which are obtained from a mixture of two or more metallic elements.
Alloys are preferred to the individual elements because they combine the desirable properties of their component elements.
An example of an alloy is brass.
Brass is mixture of copper and zinc. It combines the shiny and anti-rust properties of zinc with the durability and sonorous property of copper.
It very sonorous and malleable and is used in many musical instruments.
In conclusion, alloys are produced by mixing two or more metals together.
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What is the concentration of a 57. 10 ml solution of hbr that is completely titrated by 35. 00 ml of a 0. 200 m naoh solution?
The concentration of 57.10 ml solution is Hbr that is completely titrated is 0.326.
What is concentration?Concentration is the total amount of substance in one unit of a solution. The concentration is more when there is less solvent.
Concentration = mass / volume
From the formula of dilution M1V1 = M2V2
Given that the volume 1 is 57.10
Volume 2 is 35.00
Mass is 0.200.
M2 is ?
Putting the values in the equation:
0.200 x 57.10 = m2 x 35.00 = 0.326
m2 = 0.326
Thus, the concentration of a 57. 10 ml solution of Hbr is 0.326 m.
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chlorine + sulfur dioxide + water = hydrochloric acid + sulfuric acid
The given example is a chemical reaction.
The contents (separated as reactants and products) :
[tex]\begin{tabular}{c | l}Reactants & Products \\\cline{1-2}Chlorine & Sulfuric Acid \\Water & Hydrochloric Acid \\Sulfur Dioxide & \\\end{tabular}[/tex]
The written reaction is :
[tex]\boxed {Cl + SO_{2} + H_{2}O \implies HCl + H_{2}SO{4}}[/tex]
I hope it helped you solve the problem.
Good luck on your studies!
How many grams of sodium chloride are there in 550 ml of a 1. 90 m aqueous solution of sodium chloride?
There are 61.06 grams of of sodium chloride in its aqueous solution.
An aqueous solution is the one in which solvent is always water. Water is the most used universal solvent.
According to the question,
Volume of water = 550 ml = 0.55 L
Molarity of solution = 1.90 M
Formula for molarity = moles of solute / volume of solvent
1.90 = moles of solute / 0.55 L
Moles of solute = 1.90 × 0.55 L = 1.045 moles
Now, moles = mass / molar mass
molar mass of NaCl = 58.44 g/mol
Therefore, 1.045 = mass / 58.55 g/mol
Hence, mass in grams = 1.045 × 58.44 g/mol
Mass = 61.07 grams
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When an electron drops from the n= 6 to the n= 3 orbit, light is emitted with a wavelength of
The wavelength of the electron is 1085nm.
What is the wavelength?The wavelength refers to the horizontal distance that is covered by a wave. Now we know that according to the Bohr Model of the atom, electrons move from a higher to a lower energy level leading to the emission of a ray of light with a characteristic wavelength.
Now Using the formula;
1/λ = RH (1/n2^2 - 1/n1^2)
Where;
λ = wavelength
n1 = initial energy level
n2 = final energy level
RH = Rydberg's constant
1/λ = 1.097 * 10^7(1/3^2 - 1/6^2)
1/λ = 1.097 * 10^7( 0.111 - 0.027)
λ = 1.085 * 10^-6 m or 1085nm
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