1.00 g of the oxide of metal X (atomic mass = 64) gave 0.80 g…

Chemistry JAMB 1982

1.00 g of the oxide of metal X (atomic mass = 64) gave 0.80 g of the metal when reduced with hydrogen.
The formula of the oxide is?

  • X2O
  • XO checkmark
  • XO2
  • X2O3
  • X3O4

The correct answer is: B

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