how many grams of calcium oxide are producer from the decomposition of 125 grams of calcium carbonate

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Chemistry

Aliya Francis

15 May, 21:41

how many grams of calcium oxide are producer from the decomposition of 125 grams of calcium carbonate

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Lamont Mann · Answer 1

70.0 g. The decomposition of 125 g CaCO3 produces 700 g CaO.

MM = 100.09 56.08

CaCO3 → CaO + CO2

Mass 125 g

a) Moles of CaCO3 = 125 g CaCO3 x (1 mol CaCO3/100.09 g CaCO3)

= 1.249 mol CaCO3

b) Moles of CaO = 1.249 mol CaCO3 x (1 mol CaO/1 mol CaCO3)

= 1.249 mol CaO

c) Mass of CaO = 1.249 mol CaO x (56.08 g CaO/1 mol CaO) = 70.0 g