# What is the ratio predicted from Graham's law for rates of diffusion for #NH_3#/#HCl# ?

You can see this answer for a more explicit derivation.

Another way to do this is to get the ratio of their molar masses right away:

Ammonia then has a rate of diffusion that is...

Whichever way works for you. I would suggest the first way, which is perhaps a bit less confusing.

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The ratio predicted from Graham's law for the rates of diffusion of NH₃ to HCl is approximately 1.54:1.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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