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Anna [14]
3 years ago
12

Mercury has an atomic number of 80 and a mass number of 200.

Chemistry
2 answers:
denis23 [38]3 years ago
8 0
C. The mass number is the amount of Protons and electrons there are combined, so 200 - 80 is 120.
steposvetlana [31]3 years ago
3 0

<u>Answer:</u> The correct answer is Option c.

<u>Explanation:</u>

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons present in an atom.

Mass number = Number of neutrons + Number of protons.

We are given:

Atomic number = 80

Mass number = 200

Number of neutrons = Mass number - Atomic number = 200 - 80 = 120

Hence, the correct answer is Option c.

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g Glycolysis is the process by which energy is harvested from glucose by living things. Several of the reactions of glycolysis a
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Answer:

A and B are unfavorable reactions.

Explanation:

In chemical thermodynamics, an endergonic reaction  is also called a nonspontaneous reaction or an unfavorable reaction. it's a chemical reaction in which the change in free energy is positive, and energy is absorbed.

In chemical thermodynamics, an exergonic reaction  is also called a spontaneous reaction or a favorable reaction. it's a chemical reaction in which the change in free energy is negative.

ΔG>0

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If the Gibbs  free energy of the reaction is negative than the reaction will be spontaneous

Gibbs free energy is an energy which that can be use to convert into useful work.

ΔG=ΔH-TΔS

with ΔG= Gibbs free energy

with ΔH =  enthalpy of reaction

with T = temperature of eh reaction

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The reaction A: Pi+glucose⟶glucose-6-phosphate+H2O

The ΔG is positive. This is an nonspontaneous reaction or an unfavorable reaction

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Which equation agrees with the ideal gas law?
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The equation for ideal gas law is written as PV = nRT.

<h3>What is Ideal gas law?</h3>

Ideal gas law states that, the volume of a given amount of gas is directly proportional to the number on moles of gas, directly proportional to the temperature and inversely proportional to the pressure.

PV = nRT

where;

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Thus, the equation for ideal gas law is written as PV = nRT.

Learn more about ideal gas law here: brainly.com/question/12873752

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