Chemistryhard · Past Paper
What volume of CO2 is produced at STP when 10g of CaCO3 is heated? (Ca=40, C=12, O=16)
A22.4 L
B2.24 L
C11.2 L
D1.12 L
✓ Correct Answer: B — 2.24 L
1 mole (100g) CaCO3 gives 22.4 L CO2. 10g gives (22.4/100)*10 = 2.24 L.
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