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Chemistry

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Jacky Farrell

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Cards in this guide (17)
What is thermodynamics

the study of the movement of energy and heat.

or

Thermodynamics is the branch of physics concerned with the conversion of different energy forms.

•DeltaG (rxn) = DeltaG (pdts) - DeltaDG (rcts) •DeltaG°(rxn) = -R T ln K •

What is a solution

A liquid with something dissolved in it

How much energy is required to raise the temperature of 3 kg of iron from 20C to 25C

1935 J

What is specific heat a measure of

The amount of energy it takes to change the temperature of a substance by a certain amount.

How much energy it takes to heat a substance ~APEX

What happens to the entropy in the reaction I2s I2g

Entropy increases in the reaction.

What is the entropy of a solid based on

The arrangement of the atoms

Which equation shows how frequency is related to velocity and wavelength

F=v/&

What does thermal energy refer to

The kinetic energy within a system

What information does Gibbs free energy give about a reaction

It tells if the reaction will process spontaneously or not

What would happen to the rate of a reaction with rate law kNO2H2 if the concentration of NO were doubled

the rate would be four times larger. apex

What is the rate constant of a reaction if rate 1 10-2 molLs A is 2 M B is 3 M m 2 and n 1

4.5 (moI/L)/s -apex

What is the amount of heat needed to raise the temperature of 1 g of water

100 degrees

What statement describes the potential energy diagram of an exothermic reaction

The potential energy of the reactants is greater than the potential energy of the products.

What is the rate of a reaction that follows the rate law rate kAmBn if k 0.02 A and B are each 3 M m 2 and n 3

0.54 (mol/L)/s

How is the H fusion used to calculate the mass of solid that 1kJ of energy will melt

1kj x 1/H fusion x g/mol solid

The size of a rocket's cargo determines the amount of thrust the engine must create to carry the rocket into outer space. What is another term for this cargo

Payload (apex)

What statement best describes the second law of thermodynamics

How energy changes or moves

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