Answer:
487.02 K.
Explanation:
- To solve these problems, we can use the general law of ideal gas: PV = nRT.
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant (R = 0.082 L.atm/mol.K),
T is the temperature of the gas in K.
- The temperature of the gas = PV/nR.
P = 1.25 atm, V = 20.0 L, R = 0.082 L.atm/mol.K, n = mass/molar mass = (25.0 g)/(39.948 g/mol) = 0.626 mol.
∴ T = PV/nR = (1.25 atm)(20.0 L)/(0.626 mol)(0.082 L.atm/mol.K) = 487.02 K.
