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 0.08208 L middot atm/(K • mol) or 8.3145 J/(K • mol). The equation can be rearranged as follows to for n:
n = PV/RT
This equation is useful when dealing with gaseous because calculations involve mole ratios.
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction
CaCO3 → CaO + CO2
What is the mass of calcium carbonate needed to produce 63.0 L of carbon dioxide at STP?
Express your answer with the appropriate units.