Answer :
To find the temperature of the gas we can use the ideal gas law:
[tex]PV=nRT[/tex]where P is the pressure, V is the volume, n is the number of moles of the gas, R is the unirversal gas constant (0.08205746 L atm/ mol K) and T is the temperature.
Plugging the values given into the equation we have:
[tex]\begin{gathered} (4)(7.5)=(1.5)(0.08205746)T \\ T=\frac{(4)(7.5)}{(1.5)(0.08205746)} \\ T=243.73 \end{gathered}[/tex]Therefore the temperature is 243.73 K