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Topic: Chemistry 1010  (Read 13411 times)

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Offline sjb

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Re: Chemistry 1010
« Reply #15 on: July 21, 2009, 03:17:01 PM »
From your balanced equation;

2 H2S + 3 O2  :rarrow: 2 SO2 + 2 H2O

for every molecule (and hence mole) of H2S you put in, given excess oxygen, you form one molecule of SO2. So, if you have 9.7 mol of H2S, how many moles of SO2 can you form?
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Offline duduhead

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Re: Chemistry 1010
« Reply #16 on: July 21, 2009, 03:23:01 PM »
9.7?
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Offline sjb

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Re: Chemistry 1010
« Reply #17 on: July 21, 2009, 03:25:44 PM »
Quote from: duduhead on July 21, 2009, 03:23:01 PM
9.7?

Right, so what is the molecular mass of SO2, and given that, and the number of moles, what mass of SO2 can you produce?
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Offline duduhead

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Re: Chemistry 1010
« Reply #18 on: July 21, 2009, 03:28:29 PM »
64?
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Offline sjb

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Re: Chemistry 1010
« Reply #19 on: July 22, 2009, 01:56:19 AM »
64 g mol-1 is the molecular weight, yes, so how much SO2 can you produce?
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Offline duduhead

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Re: Chemistry 1010
« Reply #20 on: July 22, 2009, 02:26:05 PM »
is it 1 gram?
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Offline sjb

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Re: Chemistry 1010
« Reply #21 on: July 22, 2009, 02:42:05 PM »
Quote from: duduhead on July 22, 2009, 02:26:05 PM
is it 1 gram?

No. If 1 egg weighs 64g, how many grams does 9.7 eggs weigh?

Not being horrible or anything, but how much maths / chemistry have you done - these sort of problems are reasonably straightforward and, arguably to me, well below undergraduate level.

S
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Offline duduhead

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Re: Chemistry 1010
« Reply #22 on: July 22, 2009, 03:05:15 PM »
I am taking an online chemistry course, and I am having trouble with these sorts of problems in general. I can't find any examples anywhere. I wish I knew the method for doing them though.
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Offline nj_bartel

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Re: Chemistry 1010
« Reply #23 on: July 22, 2009, 05:14:14 PM »
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Offline duduhead

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Re: Chemistry 1010
« Reply #24 on: July 23, 2009, 02:22:44 PM »
what are these types of problems called?
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Offline nj_bartel

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Re: Chemistry 1010
« Reply #25 on: July 23, 2009, 06:09:24 PM »
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