CH-1989
Empirical and molecular formulae
Chemistry · Secondary 4 · Medium · Empirical and molecular formulae
A 9.00 g sample of an oxide of copper contains 7.20 g of copper and 1.80 g of oxygen.
What is the empirical formula of this oxide? ()
What is the empirical formula of this oxide? ()
- CuO
- CuO₂
- Cu₂O
- Cu₂O₃
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