A sample of gas has a mass of 0.311 g. Its volume is 0.225 L at a
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A sample of gas has a mass of 0.311 g. Its volume is 0.225 L at a temperature of 55 °C and a pressure of 886 mmHg. Find its molar mass.
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SORT The problem gives you the temperature and pressure of nitro- gen gas and asks you to find its density. STRATEGIZE Equation 6.6 provides the relationship between the density of a gas and its temperature, pressure, and molar mass. The temperature and pressure are given. You can calculate the molar mass from the formula of the gas, which you know is N₂. GIVEN: T(°C) = 125 °C, P = 755 mmHg FIND: d CONCEPTUAL PLAN P, T, M PM RT d RELATIONSHIPS USED PM d -(density of a gas) RT Molar mass N₂ = 28.02 g/mol
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PV nRT PV RT n P 886 mmHg X TK 55273 32...View the full answer
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