CH-1923
The mole
Chemistry · Secondary 4 · Hard · The mole
The formula of an oxide of element Z is Z₂O₃. 12.0 g of Z₂O₃ contains 8.4 g of Z.
How many moles of Z atoms are present in 7.0 g of the element?
How many moles of Z atoms are present in 7.0 g of the element?
- 0.10 mol
- 0.125 mol
- 0.25 mol
- 0.50 mol
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