CH-1927
The mole
Chemistry · Secondary 4 · Hard · The mole
An impure sample of 2.0 g of magnesium carbonate is heated strongly until it decomposes completely to magnesium oxide and carbon dioxide.
The reaction is: .
If 0.84 g of magnesium oxide is obtained, what is the percentage purity of the original magnesium carbonate sample? .
The reaction is: .
If 0.84 g of magnesium oxide is obtained, what is the percentage purity of the original magnesium carbonate sample? .
- 84.0 %
- 88.2 %
- 42.0 %
- 44.1 %
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.