Use the periodic table to answer this question. Decomposing calcium carbonate yields calcium oxide and carbon dioxide. What information is needed to calculate the mass of calcium oxide that can be produced from 4.7 kg of calcium carbonate?

Question

lucidiousxiv · Answer

A) number of molecules of calcium carbonate
B) molar masses of calcium, carbon, and oxygen
C) the balanced chemical equation
D) molar mass of calcium carbonate

lucidiousxiv · Answer

@SolomonZelman

solomonzelman · Answer

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solomonzelman · Answer

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anonymous · Answer

First write and balance the equation, being:
CaCO3 - CaO + CO2
Then, using the periodic table, find the molecular masses of CaCO3 and of CaO, finding their ratio. That will be 100g:56g or 0.1kg:0.056kg. Since you have 4.7kg of CaCO3, it corresponds to Xkg of CaO. Making x the subject, it should be X= 4.7*0.056/100=?