In a Grahams law experiment, 0.400 L of N (base 2) effused out of the container in 125 sec. 0.400 L of an unknown gas at the same pressure and temperature as the N (base 2) effused out of the same container in 180 sec. What was the molecular mass of the unknown gas? The answer is 58.1 amu. How do you solve for this though???
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