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Topic: Stoichiometry  (Read 3887 times)

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Offline nozo

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Stoichiometry
« on: December 22, 2007, 07:50:09 PM »
Hi guys, can someone tell me if I did the ff. setup correctly?

How many grams of water are liberated by the complete decomposition of 100g of copper (II) sulfate pentahydrate?

CuSO4.5H2O ----> CuSO4 + 5H2O

100g CuSO4.5H2O (1 mol CuSO4.5H2O / 250g CuSO4.5H2O) (5 mol H2O / 1 mol CuSO4.5H2O) (90g H2O / 1 mol H2O)

Thanks!
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Offline agrobert

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Re: Stoichiometry
« Reply #1 on: December 22, 2007, 08:01:58 PM »
looks good
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In the realm of scientific observation, luck is only granted to those who are prepared. -Louis Pasteur

Offline enahs

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Re: Stoichiometry
« Reply #2 on: December 22, 2007, 08:02:17 PM »
The method is correct. Your molecular weight for water is incorrect though.
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Offline nozo

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Re: Stoichiometry
« Reply #3 on: December 22, 2007, 08:09:01 PM »
Thanks guys   ;D

Oh and yeah, 18g for H2O... lol
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Offline bball927je

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Re: Stoichiometry
« Reply #4 on: January 11, 2008, 12:11:12 PM »
lol yeah the molecular weight for water was wayyy off
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