CHEMISTRY HIGH SCHOOL

Explain how you know the numbers of atoms in your formula. Carbon Monoxide

Answers

Answer 1
Answer:

Explanation:

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Why it is that evaporation causes cooling,but boiling causes heating?

Answers

in evaporation due to internal heat, kinetic energy of molecules increases and they come to the top and take out that heat with them when they evaporate thus causes cooling 
in boiling as heat is given to the molecules so their kinetic energy increases and they start vibrating with great energy and thus causes heating
During evaporation, particles which have a high kinetic energy come out of the body by gaining heat due to which there is a cooling effect on the particle of the body itself. that is why, evaporation causes cooling. For example: sweating 

How will the vapor pressure of an aqueous solution of sodium chloride compare to that of pure water?

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The vapor pressure of a compound refers to the pressure generated by the vapour of a compound in equilibrium with its condensed stage. The major determinant of a compound vapour pressure is temperature. The vapour pressure of an aqueous solution of sodium chloride will be lower than that of pure water. This is because, dissolution of solute in a solvent always reduces the vapour pressure of the solution as a result of interactions between the molecule of the solute and the solvent. Thus, a pure compound will always have a higher vapour pressure than a solution.
The solutions vapor pressure would be lower.

What is heat?
(in scientific vocab)

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my guess i dont know exactly but heat is energy

heat absorbed or radiated during a change of phase at a constant temperature and pressure. specific heat. the heat required to raise the temperature of one gram of a substance one degree centigrade. heat of condensation. heat liberated by a unit mass of gas at its boiling point as it condenses into a liquid.

What is the correct formula for calculating pH?

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PH = - log [ H⁺ ]  for POH  = - log [ OH⁻]

hope this helps!

Briefly explain why adding insulation to an attic helps reduce heating costs.

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Answer:

Insulation reduces the exchange of heat through a surface such as a wall, attic, duct or roof. In a well-insulated home, less warm air escapes from the house during the winter, and less cool air escapes during the summer, reducing the amount of energy needed for heating and cooling

Muscles perform what type of energy transformation?

Answers

Muscles perform energy transformation from chemical energy to kinetic energy which is very evident as we do our day to day activities. Hope this answers the question. Have a nice day. Feel free to ask more questions. Thank you.
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