What is the mass density of argon gas at pressure 1.00 × 105 N/m2 and at temperature 300 K? The mean atomic mass of argon is 39.948 g/mol and the ideal gas constant is R = 8.314 J/mol ? K =
A) 1.40 kg/m3
B) 1.00 kg/m3
C) 1.20 kg/m3
D) 1.60 kg/m3
E) 1.80 kg/m3
Answer: D
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