Answer:
20.4 grams Zn
Explanation:
To find the mass, you first need to find the moles. This can be found using the Ideal Gas Law equation:
PV = nRT
In this equation,
-----> P = pressure (atm)
-----> V = volume (L)
-----> n = moles
-----> R = Ideal Gas Constant (0.08206 atm*L/mol*K)
-----> T = temperature (K)
Before you can plug the values into the equation, you need to convert Celsius to Kelvin.
P = 0.980 atm R = 0.08206 atm*L/mol*K
V = 7.80 L T = 25.0 °C + 273.15 = 298.15 K
n = ? moles
PV = nRT
(0.980 atm)(7.80 L) = n(0.08206 atm*L/mol*K)(298.15 K)
7.644 = n(24.466)
0.312 moles = n
Now that you have the number of moles, you can convert it to grams using the atomic mass of zinc. The final answer should have 3 sig figs to match the sig figs in the given values.
Atomic Mass (Zn): 65.380 g/mol
0.312 moles Zn 65.380 grams
------------------------- x ------------------------- = 20.4 grams Zn
1 mole
What is the molarity of a solution if there are 160.0 g of h2so4 in a 0.500 l solution?
The molarity of the solution is 0.32 M
Calculation,
Molarity of the solution is the total number of moles present in volume in liter.
molarity = number of moles/volume in liter = n/V ...(i)
Number of moles of sulfuric acid = given mass/molar mass
Number of moles of sulfuric acid (n) = 16g/98.079g/mol = 0.16 mole
Volume of the solution (V) = 0.5 L
Putting the value of volume and number of moles in equation (i) we get,
molarity = 0.16 mol/0.5 L = 0.32 mol/L = 0.32 M
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What is the expected markovnikov addition product from the addition of hi to 2-methyl-2-butene?.
Markovnikov addition product from the addition of hi to 2-methyl-2-butene is 2-iodo-2-mehtylbutane.
What is Markonikov rule?
In natural science, Markovnikov's standard or Markownikoff's standard portrays the result of some expansion responses. The standard was formed by Russian scientist Vladimir Markovnikov in 1870.Markovnikov's standard is an exact rule used to foresee regioselectivity of electrophilic expansion responses of alkenes and alkynes.Markovnikov predicts the results of an electrophilic expansion of hilter kilter reagents (for example hydrogen halides, water and alcohols) to hilter kilter alkenes.To learn more about Markonikov rule from the given link
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Which stage in the life cycle of a plant is represented in this picture?
Answer:
seed, sprout, small plant, and adult plant.
Explanation:
I didnt see the picture so I cant tell you what stage it represented but I told you all the stages of plants in life cycle.
How will you recognize that a single replacement reaction has occured when you combine an active metal with 6m hcl?
A single replacement or displacement reaction occurs when one ingredient in a compound replaces another. Only another metal can replace a less active one; a metal can only displace another metal, and a non-metal can only displace another non-metal.
Displacement reaction:The tendency of the element to lose electrons is what makes it metallic. Due to their bigger sizes and propensity to lose electrons as size, the number of shells, and nuclear force of attraction rise, the most active metals are found on the left side of the periodic table.
The reaction in which the more reactive element displaces the less reactive element is known as the displacement reaction.
When we combine an active metal with HCl, the reaction is as follows:
We are taking sodium, Na which is the most active metal. It will replace H in HCl because it is more reactive than H.
2Na + 2HCl → 2NaCl + H₂
Three ways to recognize if a single displacement reaction has taken place:
1. Color change
2. Formation of bubbles (a gas)
3. Formation of a precipitate
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Balance the equation for a half-reaction that occurs in acidic solution. use e− as the symbol for an electron. equation: p_{4} -> h_{3}po_{4} p4⟶h3po4
The balance the equation for a half-reaction that occurs in acidic solution is given as,
[tex]P_{4}+16H_{2} O+20e^{-}[/tex] → [tex]4H_{3}PO_{4}+20H^{+}[/tex]
The half-reaction method to balance redox reactions in acidic aqueous solutions follows rule.
Balance elements in the equation other than O and H.Balance the oxygen atoms by adding the appropriate number of water opposite side of the equation.Balance the hydrogen atoms by adding proton ions ( [tex]H^{+}[/tex] ion) to the opposite side of the equationAdd up charge on each side of the equation by adding enough number of electrons to more positive side.The [tex]e^{-}[/tex] on each side must be equal . Multiply by appropriate integers if they are nit equal.The half -equation are added together, by cancelling out the electrons to form one balanced equation.learn about half-reaction
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The kb of hypochlorous acid is 3. 0×10^–8 at 26. 0 C. What is the percent of ionization of hypochlorous?
The acid dissociation constant (Ka) defines the difference between a weak and a strong acid. The % ionization of hypochlorous acid is 0.14%.
What is the acid dissociation constant?The acid dissociation constant is used to define the ionization constant of an acidic substance. It gives the quantitative measurement of the strength.
The ICE table is attached to the image below.
The acid dissociation constant (Ka) for the reaction is,
Ka = [H⁺][ClO⁻] ÷ [HClO]
= a² ÷ (0.015 - a)
= 3.0 x 10⁻⁸
Now, a² + 3.0 x 10⁻⁸ a - 4.5 × 10⁻¹⁰ = 0
So, a = 2.210 × 10⁻⁵
Solving further,
[H+] = a = 2.210 × 10⁻⁵ M
The percent ionization is calculated as,
[H+] ÷ [HClO] × 100
= 2.210 × 10⁻⁵ M ÷ 0.015 × 100
= 0.14 %
Therefore, 0.14 % is the percentage of hypochlorous ionization.
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Your question is incomplete, but most probably your full question was, The ka of hypochlorous acid (HClO) is 3.0 x 10⁻⁸ at 25.0°C. What is the % of ionization of hypochlorous acid in a 0.015 aqueous solution of HClO at 25.0C?
During action potential, positively charged ________ ions move inside the cell.
a. potassium
b. bromine
c. chloride
d. sodium
During action potential, positively charged sodium ions move inside the cell.
So option D is correct one.
The sodium ion moves inside the cell during a action potential. The stage of action potential is called depolarization . This open voltage gated sodium channel.
Action potentials ( those electrical impulse that send signals around body ) is nothing but more than temporary shift ( from negative to positive ) in the neuron's membrane potential caused by ions suddenly flowing in and out of the neuron.
It consists of phases:
DepolarizationovershootrepolarizationAn active potential propagates along the cell membrane of an axon until it reaches the terminal button.
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What is the name of the force that holds positively and negatively charged ions together in ionic compounds? nuclear forces van der waals forces electrostatic forces hydrogen bonding
Answer: electrostatic attraction
Explanation: ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
Disadvantages of evaporation
Answer: The main disadvantages of evaporation are high capital, energy and maintenance costs; large size of apparatus; enhanced temperatures; corrosion problems; and scaling or foaming.
Explanation:
How many different substituents are required on a carbon atom for it to be chiral?
Four different substituents are required on a carbon atom for it to be chiral.
What is Chiral Carbons ?The carbon atom which is attached with four different types of group of atoms or atoms is called Chiral carbon. Chiral molecules are non superimposable on their mirror images. Chiral carbon is also called asymmetric carbon.
Example:
[tex]Br - \underset{H} {\underset{|} {\overset{CH_3} {\overset{|}{C}}}} - Cl[/tex]
In the above example we can see that carbon atom has 4 different group attached with it that is Br, Cl, H, CH₃.
Thus from the above conclusion we can say that Four different substituents are required on a carbon atom for it to be chiral.
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What is the ph of a buffer made by combining 45. 0 ml of 0. 150 m nitrous acid and 20. 0 ml of 0. 175 m sodium nitrite? the ka of nitrous acid, hno2, is 4. 5×10^–4?
The pH of the buffer made by combining Nitrous acid and Sodium Nitrite will be 3.06.
pH can be defined as the medium of expressing the acidity or alkalinity of any solution. It is the potential of hydrogen atoms.
Buffers are the solutions that resist any change in the pH when an acid or base is added to them.
According to the question,
0.150 M nitrous acid (HNO₂) = 45 ml
0.175 M sodium nitrate (NO₂⁻)= 20 ml
Kₐ of nitrous acid (HNO₂) = 4.5 × 10⁻⁴
Total volume of buffer = 45 ml + 20 ml = 65 ml
Concentration of HNO₂ = (45) (0.150) / 65 = 0.103 M
Concentration of NO₂⁻ = (20) (0.175) / 65 = 0.054 M
HNO₂ ⇒ H⁺ + NO₂⁻
Initial : 0.103 0 0.054
Change: -x +x +x
Equilibrium: 0.103-x x 0.054+x
Kₐ = x(0.054+x) / 0.103-x = 0.054x / 0.103 = 0.524x
Also, Kₐ = 4.5 × 10⁻⁴
Therefore, 4.5 × 10⁻⁴ = 0.524x
x = 8.58 × 10⁻⁴ M
H⁺ = x = 8.58 × 10⁻⁴ M = 8.6 × 10⁻⁴ M
Therefore, pH = -log ( 8.6 × 10⁻⁴ M)
pH = 3.06
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Cis-platin is a chlorine-containing chemotherapy agent with the formula pt(nh3)2cl2. What is the mass of one mole of cis-platin?
Cis-platin is a chemotherapy agent used to treat and kill cancerous cells in patients. One mole of cis-platin has a mass of 300.06 grams/mol. Thus, option B is correct.
What is a chemotherapy agent?A chemotherapy agent is an alkylating agent that is used to treat cancer and is given to reduce the infection or to relieve the symptoms. Cis-platin (Pt(NH₃)₂Cl₂) is one of the chemotherapy agents that treat lung, ovarian, and neck cancer, etc.
The mass of one mole of Cis-platin is calculated as,
Moles = mass ÷ molar mass
Where,
Moles = 1 mole
The molar mass of (Pt(NH₃)₂Cl₂) is calculated as,
195.06 g/mole + 2(17g/mole) + (35.5)2 = 300.06 grams
Substituting values to calculate mass:
Mass = Molar mass × moles
= 300. 06 × 1
= 300.06 grams/mol
Therefore, option B. 300.06 gm/mol is the mass of Cis-platin.
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Your question is incomplete, but most probably your full question was, Cis-platin is a chlorine-containing chemotherapy agent with the formula pt(nh3)2cl2. What is the mass of one mole of cis-platin?
488.91 g/mol 300.06 g/mol492.37 g/mol283.02 g/mol2860.5 g/molCalculate the frequency of light having a wavelength of 425nm. remember that 1nm=1×10−9m
The frequency of light having a wavelength of 425nm will be 70588 × [tex]10^{14} Hz[/tex].
The count of times an event takes place per unit of time is known as its frequency. The word frequency would be most frequently used to describe waves in physics including chemistry, including light, sound, including radio waves. The frequency refers to the number of times during one second that a point on a wave crosses a fixed reference point.
A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places in the consecutive cycles.
Given data:
wavelength = 425nm = [tex]425 * 10^{-9} m[/tex]
Frequency can be calculated by using the formula;
Frequency = speed of light / wavelength
Frequency = 3 × [tex]10^{8} m/s[/tex] / 425 × [tex]10^{-9} m[/tex] = 7,0588 × [tex]10^{14} Hz[/tex].
Therefore, the frequency of light having a wavelength of 425nm will be 70588 × [tex]10^{14} Hz[/tex].
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In 2021 the James Webb Telescope will begin operation focusing on infrared wavelengths and must be kept extremely _______.
In 2021 the James Webb Telescope will begin operation focusing on infrared wavelengths and must be kept extremely cold.
What is James Webb Telescope?The James Webb Telescope is the most important optical telescope present in space, which is employed by astronomers to observe celestial bodies and physical phenomena in the universe.
This space telescope (James Webb Telescope) is based on the infrared wavelengths that cover a specific length of 0.57 to 28-micrometer waves and enable to observe different spectra across the Universe.
In conclusion, in 2021 the James Webb Telescope will begin operation focusing on infrared wavelengths and must be kept extremely cold.
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A chemist combined 0.440 L of an unknown calcium solution with an excess of ammonium chromate. This resulted in the precipitation of calcium chromate. The mass of the precipitate was 346.7 mg. What was the molar concentration of Ca2 in the original sample
The concentration of the original calcium ions is 0.005 M
What is concentration?The term concentration has to do with the amount of substance in solution. We know that the concentration can be measured in a lot of units such as mole/litre, grams per litre, percentage and so on.
As such we have the equation;
Ca^2+(aq) + (NH4)2CrO4(aq) --------> CaCrO4(s) + 2NH4^+(aq)
Number of moles of the precipitate = 346.7 * 10^-3 g/156 g/mol
= 0.0022 moles
Now;
1 mole of Ca^2+ produces 1 mole of CaCrO4 hence 0.0022 moles of CaCrO4 was produced by 0.0022 moles of CaCrO4.
Given that the volume of the solution is 0.440 L, the concentration of the solution is; 0.0022 moles/0.440 L
= 0.005 M
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An average speed for a time interval is 40 km/hr. Which is the correct time interval?
(2,20) to (4,100)
(2,20) to (4,80)
(2,20) to (3,100)
(1,20) to (3,80)
The correct time interval is (2,20) to (4,80).
What is the average velocity?The average velocity is defined as the velocity or speed of the body throughout the period of motion under consideration. This will always span the entire journey. Recall that velocity is the ratio of distance covered to time taken. The average velocity spans the entire journey and differs from the instantaneous velocity which occurs at a particular point along the journey.
Now we know that the average distance is obtained as the sum of the initial and final velocity multiplied by time and divided by two. Bear in mind that the question already contains the information that we have been told that the average velocity here is 40 km/hr. We can clearly see from the forgoing that the correct time interval is (2,20) to (4,80).
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The compound
is classified as a
The compound is classified as a secondary amine
Two organic substituents (alkyl, aryl, or both) are bonded to the nitrogen together with one hydrogen in secondary amines. Dimethylamine is a significant representation, while diphenylamine is an example of an aromatic amine. Secondary amines are amines that have two alkyl or aryl groups in place of the two hydrogen atoms of ammonia.
The molecule is methylpropylamine, a secondary amine because the nitrogen atom has both a methyl group and a propyl group. Compared to primary amines, secondary amines are more basic. The NH2 group is joined to the electron-withdrawing C6H5 group in aromatic amines. As a result, there are fewer single electron pairs available on N. Alkyl amines are hence more basic than aromatic amines.
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What is another chloride that could be used instead of the calcium chloride dihydrate to produce a solid precipitate with aqueous sodium carbonate?
cesium chloride is another chloride that could be used instead of the calcium chloride dihydrate to produce a solid precipitate with aqueous sodium carbonate
A mineral salt called cesium chloride (CsCl) is occasionally ingested or administered intravenously to cancer patients seeking alternative therapies. However, the FDA has not yet approved any cesium chloride products to treat cancer or other disorders.
In isopycnic centrifugation, cesium chloride is a common medical compound used to separate different forms of DNA. It is a reagent used in analytical chemistry to distinguish ions based on the hue and shape of the precipitate.
Cesium chloride is not proven to be effective in treating cancer. As an alternative to chemotherapy for cancer, cesium chloride is pushed. Supporters assert that cesium prevents tumor cells from proliferating by neutralizing the poisons they release.
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The molar mass of sulfur (s) is 32.06 g/mol.
calculate the mass in grams of a sample of s containing 2.01 x 10^24 atoms.
Answer:
mass = 107.04 g
Explanation:
The formula for mass is:
[tex]\boxed{mass = mole \space\ no. \times \space\ molar \space\ mass}[/tex].
In this case:
• molar mass = 32.06 g/mol
• mole no. = [tex]\frac{no. \space\ of \space\ atoms}{Avogadro's \space\ number}[/tex]
= [tex]\frac{2.01 \times 10^{24}}{6.02 \times 10^{23}}[/tex]
= 3.339 mol
Substituting these values into the formula for mass :
mass = 3.339 mol × 32.06 g/mol
= 107.04 g
The answer is 107.04 g.
The first step is to find the number of moles of sulfur.
Number of moles = No. of atoms ÷ Avogadro No.
(2.01 × 10²⁴) ÷ (6.02 × 10²³)0.3339 × 103.339 molesNow, to find the mass, multiply the number of atoms by the molar mass.
3.339 × 32.06107.04 gThe chemical equation of photosynthesis includes 6o2. which best describes this substance?
The chemical equation of photosynthesis includes 6[tex]O_{2}[/tex]. -----a gas produced during photosynthesis best describes this substance
Elaborate:
During photosynthesis plants use carbon dioxide, water and sunlight to make sugar (glucose) and a waste product, oxygen gas.
the equation of this process can be:
6 [tex]CO_{2}[/tex] + 6 [tex]H_{2} O[/tex] + light energy → [tex]C_{6} H_{12} O_{6}[/tex] + 6 [tex]O_{2}[/tex]
carbon dioxide + water + light → glucose + oxygen
Is 6[tex]O_{2}[/tex] a product of photosynthesis?
In photosynthesis, energy from light is used to convert carbon dioxide and water into glucose and oxygen. For 6 carbon dioxide and 6 water molecules, 1 glucose molecule and 6 oxygen molecules are produced.
What happens to sugar water oxygen and carbon dioxide during photosynthesis?
During photosynthesis, plants take in carbon dioxide and water from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
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How many grams of mgo are produced by the reaction of 25. 0 g of mg with 25. 0 g of o2?
When 25.0 g of Mg react with 25.0 g of O₂ it produce 41.9g of MgO.
Chemical reaction:
2Mg + O₂ → 2 MgO
Given,
Mass of Mg = 24g
Mass of O₂ = 25 g
Molar mass of O₂ = 16×2
= 32 g
Molar mass of Mg = 24.3
Moles of Mg =25/24.3
=1.04mole
Moles of O₂ =25/32
=0.78mole
From above reaction we can say that 2moles of mg react with 1moles of O₂ to give 2moles of MgO.
So, 1 mole of Mg react with 0.5 mole of O₂ to produce 1mole of MgO.
So, 1.04 react with= 0.5× 1.04
= 0.520 g oxygen to give 1.04 moles of MgO.
From above we can say that Mg is limiting reagent.
Moles of MgO =1.04
Molar mass of MgO =40.3
Mole =given mass/ molar mass
1.04 =mass/ 40.3
Mass = 1.04×40.3
41.9 g
Thus, from above we concluded that 25.0 g of Mg react with 25.0 g of O₂ it produce 41.9g of MgO.
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Select the correct answer from each drop-down menu. how does the equilibrium change to counter the removal of a in this reaction? a b ⇌ ab the equilibrium . simultaneously, there’s an increase in the reaction.
a b ⇌ ab
The equilibrium Shifts left simultaneously, there’s an increase in the Reverse reaction.
When the addition of the reactant in reaction system then the equilibrium will shift to the right (forward) direction of the reaction.
What happens if the equilibrium shifts to the right?
The overall reaction will shift in a way that reduces the system's stress. Therefore, if one of the reactants is under more stress, the equilibrium will move to the right to eliminate some of that reactant.What does it mean when equilibrium lies to the left?
Yes, "to the left" does relate to a balance expression's left side.When we say that an equilibrium is "to the left," we mean that the educt or reactant is preferred, meaning that there is more H2O present than H3O+ or OH.
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What is the daughter nucleus produced when Au195 undergoes electron capture?
Pt195 having 78 atomic number is the daughter nucleus produced when Au195 undergoes electron capture.
An unstable isotopes can undergoes radioactive decay to form a more stable isotopes . Initial isotopes is called parent nuclide and the resultant isotopes from radioactive decay is called the daughter nuclide There are several radioactive decay like alpha decay , beta decay , gamma decay , electron capture etc .
In electron capture , the atom have only one less which is daughter isotopes than electron than atomic number of parent isotopes.
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How much would the boiling point of water increase if mol of NaCl added 1 kg of water (Kb= 0.51 degrees Celsius /(mol/kg) for water i=2 for NaCl
The boiling point of water would increase by 1°C if 1 mol of NaCl added 1 kg of water.
What would be the change in the boiling point of water when NaCl is added to it?The addition of solute substances to solvent such as water results in a change in the boiling points and freezing points of the solvents.
The formula to calculate the change in temperature is given below:
ΔT = Kbmi
Where;
m is molality of the solution
Kb and i are constants.
Solving for change in temperature:
m = 1 mol/kg
ΔT = 0.51 * 1 * 2
ΔT = 1°C
The normal boiling point of water is 100°C
The new boiling point of the solution = (100 + 1) = 101 °C
In conclusion, addition of solute to solvent will result in change in the boiling point of the solvent.
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When you created hypotheses to guess whether each chemical was an acid or base, what specifically did you look for in the chemical formulas?
While assigning a term for a chemical to be an acid or base we have to look for the [tex]H^{+}[/tex] ions that can be donated by a chemical formulas or [tex]OH^{-}[/tex] ions for the basic , When you created hypotheses to guess whether each chemical was an acid or base,
To determine whether a substance is an acid or base , count the hydrogen on each substance before and after the reaction . If the number of hydrogens has decreased the substance is the acid ( donates hydrogen ions ) . If the number of hydrogens has increased that substance is the base ( accepts hydrogen ion )
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What is the value of for this aqueous reaction at 298 k? a b↽−−⇀c dδ°=20. 46 kj/mol
The value for this aqueous reaction at 298 k? a b↽−−⇀c dδ°=20. 46 KJ/mol is 9.91 mol. in equilibrium
What is an aqueous reaction in equilibrium?When a chemical reaction happens at the liquid state and the formation of reactant and product is the same then the reaction is known as an aqueous reaction in equilibrium denoted by K.
δG = − R T ln
R = universal gas constant 8.313
δG= 20. 46 kj/mol
T = 298 k or 24.4 in celcius.
substituting the value in the equation.
20. 46 kj/mol = 8.313 × 24.4 in celcius × K
K = 8.313 × 24.4 in celcius / 20. 46 kj/mo
k = 9.91 mol .
Therefore, The value of this aqueous reaction at 298 k? a b↽−−⇀c dδ°=20. 46 KJ/mol is 9.91 mol. in equilibrium
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Perform the following operationand express the answer inscientific notation.7.00x10^5 - 5.00x10^4
Taking into account the scientific notation, the result of the subtraction is 6.5×10⁵.
Scientific notationFirst, remember that scientific notation is a quick way to represent a number using powers of base ten.
The numbers are written as a product:
a×10ⁿ
where:
a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.n is an integer, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.Subtraction in scientific notationYou want to subtract two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found. In this case, the highest exponent is 5.
Then all the values are expressed as a function of the base 10 exponent with the highest exponent. In this case: 5.00×10⁴=0.500×10⁵
Taking the quantities to the same exponent, all you have to do is subtract what was previously called the number "a". In this case:
7.00×10⁵ - 0.500×10⁵= (7.00- 0.500)×10⁵= 6.5×10⁵
Finally, the result of the subtraction is 6.5×10⁵.
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What type of bond is joining the two hydrogen atoms?
a. two hydrogen atoms sharing a pair of electrons.
b. covalent hydrogen hydrophobic ionic hydrophilic
Covalent hydrogen bond is joining the two hydrogen atoms.
The simplest material with a covalent hydrogen bond is the hydrogen molecule. Two hydrogen atoms, each with one electron in a 1s orbital, combine to produce it. The two electrons in the covalent link are shared by both hydrogen atoms, and each one takes on an electron configuration like that of helium.The hydrogen atom's single electron shell, which contains space for two electrons, is where the electrons are located. The same nature of the hydrogen atoms prevents either from stealing an electron from the other in order to complete its own electron shell and create an ionic bond. The two electrons are thus shared by the two hydrogen atoms in a covalent link.learn more about Covalent hydrogen bond here: https://brainly.com/question/20607646
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Examples of the surface area change the rate of chemical reactants applied in industry or products, materials?
What's the effect of surface area change
We know
Pressure is indirectly proportional to area
If surface area increases pressure decreasesIf pressure decreases volume increasesIf volume increases no of moles increasesSo production increases.________ is the enthalpy change when 1 mole of water is produced by the reaction of an acid and a base under standard conditions.
Standard enthalpy change of neutralization is the enthalpy change when 1 mole of water is produced by the reaction of an acid and a base under standard conditions.
Enthalpy change of neutralization:
Every time enthalpy change of neutralization is calculated, one mole of water is produced. Heat is released when an acid and an alkali react, hence enthalpy changes of neutralization are always negative. The values are always quite comparable for reactions involving strong acids and alkalis, falling between -57 and -58 kJ mol-1.If the reaction is the same in each case of a strong acid and a strong alkali, the enthalpy change is similar.Learn more about the Enthalpy of neutralization with the help of the given link:
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