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Topic: few questions on mole and mass  (Read 2956 times)

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Offline knightftbl10

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few questions on mole and mass
« on: April 21, 2010, 09:08:25 PM »
Hello I would like some assistance on a few homework questions i have thanks..

here is the first one~

If you had 2.50 moles of oxygen gas, what mass of the gas would be in the sample? plz help explain the process thanks


second question~ What is the mass of 100 million atoms of gold? could you mass this on a balance?
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Offline knightftbl10

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Re: few questions on mole and mass
« Reply #1 on: April 21, 2010, 09:12:26 PM »
I would just like some assistance on the process for answering these questions, i dont need the answers just some assistance on applying these. thanks.
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Offline Borek

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Re: few questions on mole and mass
« Reply #2 on: April 22, 2010, 03:11:19 AM »
What is a molar mass?

How many atoms in a mole?
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