CH-774
The mole
Chemistry · Secondary 3 · Easy · The mole
A sample of magnesium carbonate, MgCO₃, is heated to constant mass. Its mass decreases from 4.20 g to 2.52 g. The loss in mass is due to CO₂ escaping. What is the mass of CO₂ released?
- 1.68 g
- 2.52 g
- 4.20 g
- 6.72 g
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