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In: Chemistry

We conducted a lab in which we had to determine the molecular weight of a volatile...

We conducted a lab in which we had to determine the molecular weight of a volatile liquid. My professor wants us to explain why Graham's Law of Effusion works for this procedure? The experiment consisted of us heat up a test tube with a volatile liquid. The lid of the test tube was covered in tin foil with a pin hole to allow for the gas to escape. Please don't just define Graham's Law. Tell me why it works here.

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