Answer:
approximately 11.2 grams of calcium oxide are produced when 20 grams of calcium carbonate is completely decomposed by heating.
Explanation:
The balanced equation is: CaCO3 (s) → CaO (s) + CO2 (g)
Calculate the number of moles of calcium carbonate in 20g: Moles = Mass / Molar mass Moles of CaCO3 = 20g / 100.09 g/mol
Since the mole ratio between calcium carbonate and calcium oxide is 1:1, the number of moles of calcium oxide produced is the same as the number of moles of calcium carbonate.Calculate the mass of calcium oxide produced: Mass of CaO = Moles of CaO × Molar mass of CaO Mass of CaO = Moles of CaCO3 × Molar mass of CaO Mass of CaO = (20g / 100.09 g/mol) × 56.08 g/mol
Performing the calculation, we find: Mass of CaO = (20g / 100.09 g/mol) × 56.08 g/mol ≈ 11.2g
