# Problem: The gas in a piston (defined as the system) is warmed and absorbs 660 J of heat. The expansion performs 346 J of work on the surroundings. What is the change in internal energy for the system?

###### FREE Expert Solution

$\overline{){\mathbf{∆}}{\mathbf{E}}{\mathbf{=}}{\mathbf{q}}{\mathbf{+}}{\mathbf{w}}}$

where w is work; and q is the heat release or absorb

###### Problem Details

The gas in a piston (defined as the system) is warmed and absorbs 660 J of heat. The expansion performs 346 J of work on the surroundings. What is the change in internal energy for the system?