Help please!, Chemistry question |
 Nov 10 2008, 09:34 PM
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#1
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Newbie  Group: Member Posts: 8 Joined: Nov 2008 Member No: 695,844  |
Please help me answer this one chemistry question.
LiOH + CO2 → Li2CO3 + H2O how many grams of Li2CO3 are produced from the complete reaction of 71.85 g of LiOH ? |
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Nov 11 2008, 08:00 PM
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#2
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 in a matter of time Group: Staff Alumni Posts: 7,151 Joined: Aug 2005 Member No: 191,357 |
I think y'all are being a little unfair because other people have asked for help here before too, so why just attack this guy?
Anyway. It's simple stoichiometry. First you should balance the equation by putting a 2 in front of LiOH. Convert 71.85 g of LiOH into moles. (71.85g / 23.95g/mol = 3 moles of LiOH) Convert moles of LiOH into moles of Li2CO3. Mole ratio according to what is given is 2:1 so it would just be 1.5 moles of Li2CO3. Convert moles of Li2CO3 into grams. (1.5 moles x 73.89 g/mol = 110.8 g of Li2CO3). Answer: 110.8 g of Li2CO3 Mind you I haven't taken Chem in 2 years so I might be wrong. That is if you check this again. |
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Posts in this topic
obamalama Help please! Nov 10 2008, 09:34 PM
brooklyneast05 this isn't a site to help you with your homewo... Nov 10 2008, 09:36 PM obamalama First of all, I've only posted two questions. ... Nov 10 2008, 09:37 PM brooklyneast05 why would anyone want to help you do your homework... Nov 10 2008, 09:39 PM Tomates or why would anyone want to help you if you have a... Nov 10 2008, 09:40 PM carolannexbh Try using a site like this one because this isnt a... Nov 10 2008, 09:44 PM Spencer QUOTE(obamalama @ Nov 10 2008, 06:34 PM) ... Nov 11 2008, 06:24 PM karmakiller It's not that hard of a question. Of all the p... Nov 11 2008, 07:37 PM Tomates she probably wont come back to check this thread Nov 11 2008, 07:54 PM
brooklyneast05 i think it's fair. if this was a regular posti... Nov 11 2008, 08:31 PM |
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