Chemistry

Problem

In a certain process, the internal energy of a closed gas system decreases by

120\,\text{J}

while

40\,\text{J}

of energy is removed from the system by heating. What is the numerical value and sign of the work term

W

for this process? a)

-160\,\text{J}

+80\,\text{J}

-80\,\text{J}

+160\,\text{J}