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### Topic: Chemistry 1010  (Read 9938 times)

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##### Chemistry 1010
« on: July 21, 2009, 01:55:48 PM »
How many grams of SO2 are produced when 330 grams of H2S reacts with oxygen?
2 H2s+ 3 O2 arrow 2 So2 + 2 H20

This question is on my homework and the equation is suppose to help me in solving it but I have no idea how to do it!

Thanks so much for the *delete me*

#### sjb

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##### Re: Chemistry 1010
« Reply #1 on: July 21, 2009, 02:20:16 PM »
How many moles is 330g of H2S?

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##### Re: Chemistry 1010
« Reply #2 on: July 21, 2009, 02:24:36 PM »
How many moles is 330g of H2S?
is it 3?

#### sjb

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##### Re: Chemistry 1010
« Reply #3 on: July 21, 2009, 02:26:03 PM »
How many moles is 330g of H2S?
is it 3?

No, it isn't. What is the molecular weight of H2S?

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##### Re: Chemistry 1010
« Reply #4 on: July 21, 2009, 02:27:10 PM »
34

#### sjb

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##### Re: Chemistry 1010
« Reply #5 on: July 21, 2009, 02:28:08 PM »
34

So how many moles are there in 330g?

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##### Re: Chemistry 1010
« Reply #6 on: July 21, 2009, 02:31:05 PM »
is it 330?

#### sjb

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##### Re: Chemistry 1010
« Reply #7 on: July 21, 2009, 02:33:39 PM »
is it 330?

Not 330 either. Perhaps another way to look at it - if an egg weighs 34g, how many eggs do you need to weigh 330g?

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##### Re: Chemistry 1010
« Reply #8 on: July 21, 2009, 02:36:00 PM »
9.7?

#### sjb

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##### Re: Chemistry 1010
« Reply #9 on: July 21, 2009, 02:40:45 PM »
9.7?

So how many moles of H2S are there in 330g?

edit hit sup instead of sub

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##### Re: Chemistry 1010
« Reply #10 on: July 21, 2009, 02:45:04 PM »
is it 9.7?

#### sjb

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##### Re: Chemistry 1010
« Reply #11 on: July 21, 2009, 02:46:33 PM »
is it 9.7?

Great! Now, from your equation, how many moles of SO2 are generated when you react 9.7 mol of H2S?

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##### Re: Chemistry 1010
« Reply #12 on: July 21, 2009, 02:51:36 PM »
330?

#### sjb

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##### Re: Chemistry 1010
« Reply #13 on: July 21, 2009, 02:54:57 PM »
330?

No, not 330. If you had 2 moles of H2S, how many moles of SO2 could you produce?