Answer
700 K
Work Step by Step
We find:
$\frac{V_{i}}{T_{i}}=\frac{V_{f}}{T_{f}}$ (constant n and P)
$\implies T_{f}=T_{i}(\frac{V_{f}}{V_{i}})=(45+273.15)\,K\times\frac{55.0\,dm^{3}}{25.0\,dm^{3}}=700\,K$
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