Question

3. What determines whether the equilibrium temperature of a mixture of two amounts of water will be closer to the initially cooler or warmer water?

A) the temperature of the water

B) the amounts of water at each temperature.

C) neither the temperature or amounts of water at each temperature.

D) both the temperature and amounts of water at each temperature.

4. The amount of internal energy in the water is proportional to what quantities?

A) the mass of the water.

B) the temperature of the water.

C) neither the mass or temperature

D) both the mass and temperature of the water

Answer 1

Also, internal energy of a system is the total energy contained within the system or Internal energy is defined as the energy associated with the random, disordered motion of molecules means energy on the microscopic scale which will be a sum of kinetic(translational, rotational and vibrational kinetic energy) and potential energy( associated with the inter molecular attractive forces). So it depends on temperature also as if the temperature changes average molecular kinetic energy will change and hence internal energy.