Stoichiometric calculations
STOICHIOMETRIC CALCULATIONS · IMAT Doutor1 / 1
A 5.0 g sample of impure calcium carbonate reacts with excess hydrochloric acid and releases 0.88 g of CO2. What is the percentage by mass of CaCO3 in the sample? (Mr: CaCO3 = 100, CO2 = 44)
A
20%
B
30%
C
40%
D
50%
E
80%
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