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Chemistry 21 Online
OpenStudy (anonymous):

How do I find moles or mass with the molar mass formula: M=m/n? I wanna know how to cancel, etc. Help!

OpenStudy (anonymous):

hi sorry to bother you but for Charle's Law: Vi/Ti = V2/T2 how would I get V2? can you show me like cancelling or multiplying...?

OpenStudy (matt101):

Is there a particular question you need help with? This equation is easy enough to understand: n = m/MM. Think of it like this - instead of moles, let n = dozens. m is the actual number of for example eggs you have and MM is 12 (the "molar mass" of a dozen is 12). Therefore, by dividing the total number of eggs you have by the "molar mass" of the unit in question (i.e. a dozen), you get the number of dozens of eggs you have. Not sure if that helps...

OpenStudy (matt101):

Same thing for Charles' Law. Do you have a specific question? It's easy to find V2 if you're given ways of finding V1, T1, and T2.

OpenStudy (anonymous):

like if I wanna find V2 do I do it like this way: |dw:1340079761890:dw|

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