Answer
4.30 L
Work Step by Step
We find:
$\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}$
$\implies V_{2}=\frac{P_{1}V_{1}T_{2}}{T_{1}P_{2}}$
$=\frac{(748\, mmHg)(4.25\,L)(26.8+273)\,K}{(25.6+273)\,K\times (742\, mmHg)}$
$=4.30\,L$