Wednesday
April 1, 2015

Homework Help: Chemistry

Posted by Ben on Thursday, April 28, 2011 at 9:34am.

a sample of limestone and other solid materials is heated and the limestone decomposes to give calcium oxide and carbon dioxide:
CaCO3 ----> CaO + CO2

a 1.506 g sample of limestone containing material produces 284 mL of CO2 at STP. what is the mass percent os CaCO3 in the original sample?
PLEASE HELP

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