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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Mnw12321 on September 03, 2020, 12:59:28 PM

Title: Graham’s Law Help
Post by: Mnw12321 on September 03, 2020, 12:59:28 PM
Suppose 2.20X10-4 moles of nitrogen escape through a hole in 105s. Under the same conditions, how many grams of hydrogen would escape through the same hole in 105 s?

Could someone pls walk me through how you solve this. I don’t understand the relevance of using a ratio
Title: Re: Graham’s Law Help
Post by: Corribus on September 03, 2020, 09:26:27 PM
Why don't we start with: what is Graham's Law?
Title: Re: Graham’s Law Help
Post by: Enthalpy on September 07, 2020, 11:53:01 AM
Not enough information. It depends on said hole.

That is, the gas' inertia can limit it speed. Or its viscosity. Or the diffusivity.

You might try to guess what process limits the leak based on the throughput, but it's unsafe.
Title: Re: Graham’s Law Help
Post by: Borek on September 07, 2020, 03:10:34 PM
Come on, on this level we are talking about ideal case, no need to make the problem look more difficult than it is intended to be.