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PLEASE HELP WITH THIS CHEMISTRY QUESTIION?
If the density of an ideal gas at STP if found to be 1.78 g/L, what is its molar mass?
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- electron1Lv 73 years ago
At standard temperature and pressure, the volume of one mole of gas is 22.4 liters. The density is the mass of one liter. To determine the molar mass, multiply the density by this number.
Molar mass = 1.78 * 22.4 = 39.872 grams
You can round this mass to 39.9 grams. I hope this is helpful for you.
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