Answer to Question #309677 in Chemistry for mcc

Question

Hess’s law states that the __________________.

a. enthalpy of a sum of a series of reactions is equal to the sum of the enthalpies of those two reactions.

b. enthalpy of a sum of two reactions is equal to the difference of the enthalpies of those two reactions.

c. enthalpy of a sum of a series of reactions is equal to the sum of the heat capacities of those two reactions.

d. enthalpy of a sum of a series of reactions is unequal to the sum of the enthalpies of those two reactions.

Heat is a form energy transfer between objects as an effect of their difference in _________.

a. volume

b. energy

c. pressure

d. temperature

Calorimetry involves the measurement of the ___________________.

a. quantity of heat exchanged between a system and the surroundings.

b. quantity of work exchanged between a systems.

c. quantity of work exchanged between a system and the surroundings.

d. quantity of heat exchanged between the systems.

Answer 1

1.a. enthalpy of a sum of a series of reactions is equal to the sum of the enthalpies of those two reactions.

2.b. energy

3.a. quantity of heat exchanged between a system and the surroundings.