Question

If a system absorbs 155.0 kJ of heat from its surroundings and the system does 45.0 kJ of work on its surroundings, what is the change in the internal energy of the system, in kJ

Answer 1

The change in the internal energy of the system is 110 kJ.

What is internal energy?

Internal energy is defined as the energy associated with the random, disorder motions of molecules.

calculate the change in internal energy, we apply the formula below.

Formula:

• ΔU = Q-W.................... Equation 1

Where:

• ΔU = Change in internal energy
• Q = Heat absorbed from the surroundings
• W = work done by the system

From the question,

Given:

• Q = 115 kJ

• W = 45. 0 kJ

Substitute these values into equation 1

• ΔU = 155-45

• ΔU = 110 kJ

Hence, The change in the internal energy of the system is 110 kJ.

Learn more about  change in internal energy here: brainly.com/question/4654659