A 25-L container holds ideal hydrogen (H2) gas at a gauge pressure of 0.25 atm and a temperature of 0°C
What mass of hydrogen gas is in this container? The ATOMIC mass of hydrogen is 1.0 g/mol, the ideal gas constant is R = 8.314 J/mol ? K = 0.0821 L ? atm/mol ? K, and 1.00 atm = 101 kPa.
A) 1.4 g
B) 2.8 g
C) 4.2 g
D) 5.6 g
E) 6.3 g
Answer: B
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