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Topic: Questions about Molar Mass  (Read 3794 times)

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Offline SoleSky

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Questions about Molar Mass
« on: January 02, 2010, 10:16:19 AM »
Okay, I've done molar mass before but I have a lab that I'm doing on Formulas of Hydrates and I was wondering how to find the molar mass of Magnesium Sulfate [Mg(SO4).7H20] without the water and with it.  I'm guessing that this will help me calculate the % of water from the hydrate.
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Offline Borek

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Re: Questions about Molar Mass
« Reply #1 on: January 02, 2010, 10:19:35 AM »
Just try...
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Offline SoleSky

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Re: Questions about Molar Mass
« Reply #2 on: January 02, 2010, 11:03:30 AM »
yeah, I'm not sure what to do, I do not need the answer, just the way to calculate molar mass.
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Offline Borek

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Re: Questions about Molar Mass
« Reply #3 on: January 02, 2010, 11:45:21 AM »
Molar mass of MgSO4?

Molar mass of H2O?

Molar mass of substance that contains seven molecules of water per each molecule of MgSO4?
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Offline SoleSky

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Re: Questions about Molar Mass
« Reply #4 on: January 02, 2010, 01:32:43 PM »
well I will worry about the the MgSo4 first, do you do the mass of magnesium x 6.02x10^23 first?
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Offline JGK

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Re: Questions about Molar Mass
« Reply #5 on: January 04, 2010, 12:39:03 PM »
Google is your Friend.

Step one : Take a deep breathe

Step two : calm and relax yourself

Step three: Read http://misterguch.brinkster.net/molarmass.html
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