"In a natural thermodynamic process, the sum of the entropies of the interacting systems increases." Which law of thermodynamics does this statement refer to?

Calculating heat

How much heat is absorbed by a copper penny as it warms from to assuming the penny is pure copper with a mass of ? of copper is .

Which of the following statements is true of standard states?

The second law of thermodynamics states which of the following is true regarding an isolated system?

How much heat is required to raise the temperature of of water from to ? (Specific heat capacity of water is )

How much heat is required to raise the temperature of of water from to ? Specific heat capacity of water is