Question

If 515 J of heat is added to a gas that does 218 J of work as a result, what is the change in the energy of the system?​

Answer 1

Given:

Heat added to the system $q$ = $+ 515$ J

Work done by the system $w = -218$ J

To find:

Change in the energy of the system ΔΕ

Formula:

ΔΕ = $q$ + $w$

Step-by-step Explanation:

ΔΕ = $q$ + $w$

ΔΕ = $+515$$-218$ J

ΔΕ = +$297$ J

Answer:

Therefore, the change in energy of the system is +$297$ J