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Topic: Calculating Moles  (Read 4085 times)

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Offline spaztikmaverik

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Calculating Moles
« on: August 23, 2009, 01:46:16 PM »
Given 78g of oxygen.
4Fe + 3O2 ->2Fe2O3

How many moles of oxygen will react?
How many moles of iron must react?
How many moles of product form?
What mass of product forms?

Thanks in advance.
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Offline sjb

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Re: Calculating Moles
« Reply #1 on: August 23, 2009, 01:53:19 PM »
What is the molecular weight of O2?
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Offline spaztikmaverik

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Re: Calculating Moles
« Reply #2 on: August 23, 2009, 02:30:13 PM »
16 for O and 32 for O2 i believe
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Offline Sam (NG)

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Re: Calculating Moles
« Reply #3 on: August 23, 2009, 04:27:56 PM »
given this information, how many moles of oxygen is 78 g?

once you have this information, then you can use the ratio from your balanced stoichiometric equation to calculate the number of moles of Iron needed for the reaction, the number of moles of product formed and from this, the mass of product formed.
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