Question

What what is the change in internal energy if 500 joule of heat is added to a system and 125 joule of work are done on a system

Answer 1

Answer:

DU = 375 Joules

Explanation:

Given the following data;

Quantity of heat = 500 Joules

Work done = 125 Joules

To find the change in internal energy;

Mathematically, the change in internal energy of a system is given by the formula;

DU = Q - W

Where;

• DU is the change in internal energy.
• Q is the quantity of energy.
• W is the work done.

Substituting into the formula, we have;

DU = 500 - 125

DU = 375 Joules