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Chemistry

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Angel Volkman

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Cards in this guide (15)
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 specific heat capacity

specific heat capacity of a substance is defined as the QUANITY OF HEAT REQUIRED to raise the temperature of 1 Kg of the substance through 1K ( kelvin ) .

however it obtained the unit of J/kg/k

The specific heat capacity is the energy required to raise the temperature of 1 kg of material by 1 degree Celsius.

_____________________

Apex: The energy needed to change the temperature of a substance The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

What is the strong nuclear force

the strong nuclear force is more than 100 times greater than the electric force.

What is the nuclear decay equation for an example of alpha decay

The equation for the alpha decay of 239Pu is: 94239Pu --> 92235U + 24He

where 24He represents the alpha particle, which is a Helium nucleus.

What would cause entropy to increase in a reaction

The products becoming more spread out.

What does the H of a reaction represent

It represents the heat involved in a reaction.

What would cause entropy to decrease in a reaction

The products becoming more ordered than the reactants

Which of the following electromagnetic waves can create ions

Gamma rays

What information does the latent heat of vaporization give

The energy needed to completely vaporize a mole of a liquid

Which equation shows how frequency is related to velocity and wavelength

F=v/&

What information does Gibbs free energy give about a reaction

It tells if the reaction will process spontaneously or not

What could the fourth quantum number of a 2s2 electron be

ms= +1/2

What is the value for G at 300 K if H 27 kJmol and S 0.09 kJmolK

G = 0 kJ/mol

How much energy is released is a sample loses 0.05 kg mass through radioactive decay

4.5 × 1015 J

What statement best describes the second law of thermodynamics

How energy changes or moves

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