Calcium carbonate decomposes: . Calculate the mass of CO₂ formed when 100 g of CaCO₃ decomposes completely. (M(CaCO₃) = 100 g·mol⁻¹, M(CO₂) = 44 g·mol⁻¹)
Answer and explanation
Correct answer: C.
- Step 1: mol; the ratio CaCO₃ : CO₂ is 1 : 1.
- Step 2: g.
Answer
.
Why not the others: : the mole ratio was doubled. : this is the mass of CaO left. : the masses of reactant and product were assumed equal.
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