The temperature : 332.75 K
Further explanation
Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.
volume of gas = 790 cm³ = 0.79 L
mol of gas at STP :
[tex]\tt \dfrac{0.79}{22.4}=0.035[/tex]
Use ideal gas :
[tex]\tt PV=nRT[/tex]
P=726 mmHg=0.955 atm
V= 1000 cm³ = 1 L
[tex]\tt T=\dfrac{PV}{nR}\\\\T=\dfrac{0.955\times 1}{0.035\times 0.082}\\\\T=332.75~K[/tex]
