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Calculate the number of moles of hydrogen gas contained in 18L vessel at 27°C and a pressure of 70 cm of Hg. Given R = 0.082 L /atm/K/mol. |
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Answer» We have given, volume of hydrogen gas = 18 L Temperature = 300 k Pressure of gas = 70 cm Hg or 700 mm of Hg or 0.921 atm R = gas constant = 0.082 L/atm/K/mol assuming hydrogen gas behaving like ideal gas-- so from ideal gas equation PV = nRT n = PV/RT \(=\frac{0.921 atm\times18L}{0.082 L/atm/K/molx 300 k}\) n = 0.674 mol |
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