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What pressure will be exerted by 10 moles of hydrogen gas in a 7.5 L cylinder at 20°C? (Given: R = 8.314 L∙kPa/K∙mol)
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At 20°C, the pressure of 10 moles of hydrogen gas in a 7.5 L cylinder will be 22.93 kPa. This is determined by applying the ideal gas law, which states that the pressure of a gas (P) is equal to the number of moles of the gas (n) multiplied by the universal gas constant (R) divided by the volume of the container (V), with temperature (T) held constant. In this case, the equation is: P = nRT / V P = (10 moles)(8.314 L∙kPa/K∙mol) / 7.5 L P = 22.93 kPa
