The Figure Shows A $p V$ Diagram for a Gas Going Through a Cycle From

Short Answer

The figure shows a $p V$ diagram for a gas going through a cycle from $A$ to $B$ to $C$ and back to A. From point $A$ to point $B$ , the gas absorbs $50 \mathrm {~J}$ of heat and finds its internal (thermal) energy has increased by $20 \mathrm {~J}$ . Going from B to $C$ , the internal (thermal) energy decreases by $5.0 \mathrm {~J}$ .
(a) How much work was done by the gas from $A$ to $B$ ?
(b) How much heat was absorbed by the gas from $B$ to $C$ ?
(c) How much work was done by the gas going from $B$ to $C$ ?