When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction
CaCO3(s) → CaO(s) + CO2(g)
What is the mass of calcium carbonate needed to produce 43.0 L of carbon dioxide at STP? Express your answer with the appropriate units.
Express your answer with the appropriate units.
The ideal gas law PV = nRT relates pressure P, volume V, temperature T, and number of moles of a gas, n. The gas constant R equals 0.08206 L ⋅ atm/(K ⋅ mol) or 8.3145 J/(K ⋅ mol). The equation can be rearranged as follows to solve for n:
This equation is useful when dealing with gaseous reactions because stoichiometric calculations involve mole ratios.
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