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Topic: Gravimetric Detmination  (Read 2507 times)

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Offline choc1022

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Gravimetric Detmination
« on: September 27, 2009, 09:51:50 PM »
I need help in how to setup this problem and solving it.

Mass of crucible 10.9372g
Mass of crucible and mixture 14.0626g
Mass of mixture 3.1254 g
Mass of crucible after heating 14.0153g

What mass of water was lost by the sample?
What is the molar mass of water?
How many moles of water were lost by the sample?
How many moles of Bacl2 *2h2o were present in the original sample?
What is the molar mass of BaCl2 * 2H2O?
How many grams of  BaCl2 * 2H2O were present in the original sample?
What is the percent composition of BACl2 *2H2O?
How many grams of NaCl were present in the original sample?
What is the percent composition of NaCl in the sample?
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Offline Borek

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Re: Gravimetric Detmination
« Reply #1 on: September 28, 2009, 03:23:06 AM »
Please read forum rules.

You have to show your attempts to receive help. This is a forum policy.
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Offline choc1022

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Re: Gravimetric Detmination
« Reply #2 on: September 28, 2009, 06:41:29 PM »
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