A sample containing 42.9 g of Ar is enclosed in a container of volume 8.05×10−2 L at 375 K.
Molar mass of Ar = 39.95 g/mol
mass of Ar = 42.9 g
we have below equation to be used:
number of mol of Ar,
n = mass of Ar/molar mass of Ar
=(42.9 g)/(39.95 g/mol)
= 1.074 mol
we have:
V = 0.0805 L
n = 1.0738 mol
T = 375.0 K
we have below equation to be used:
P * V = n*R*T
P * 0.0805 L = 1.0738 mol* 0.0821 atm.L/mol.K * 375 K
P = 411 atm
Answer: 411 atm
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