Chemistry
Grade-9
Easy
Question
How much CaO will be produced when 50gm of CaCO3 is heated?
- 14 gm
- 11.6 gm
- 38 gm
- 28 gm
Hint:
1 mole calcium carbonate gives 1 mole calcium oxide.
The correct answer is: 28 gm
CaCO3 
CaO +CO2
1 mole calcium carbonate gives 1 mole calcium oxide.
100g calcium carbonate gives 56gm of calcium oxide.
50gm of calcium carbonate gives 28gm of carbon dioxide.
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