75.0 degrees Celsius = 75.0 + 273 = 348 K.
Assuming pressure is held constant,
[tex]\frac{958}{348}=\frac{822}{T_{2}} \\ \\ \frac{348}{958}=\frac{T_{2}}{822} \\ \\ T_{2}=\frac{(822)(348)}{958} \approx 299 \text{ K} \\ \\ T_{2} \approx 299-273=\boxed{26^{\circ} \text{ C}}[/tex]
