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OpenStudy (anonymous):
Please help! Calculate the number of molecules of CO2 gas produced at STP when 245g HCl acid reacts with CaCO3, reacts with by the following reaction: CaCO3 + 2HCL --> CaCl2 + CO2 + H2O I think I have to find n, right? So I converted grams of HCl to moles of CO2, but.. Then I realized that using moles of CO2 as n would fill in all of the variables of the Ideal Gas Law... I'm confused.
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