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Chemistry
Chemistry
Problem
Two metallic oxides contain 27.6% and 30% oxygen respectively. If the formula of the first oxide is
X
3
O
4
X_3O_4
X
3
O
4
, the formula of the second oxide will be (1)
X
O
XO
X
O
(2)
X
O
2
XO_2
X
O
2
(3)
X
2
O
3
X_2O_3
X
2
O
3
(4)
X
2
O
5
X_2O_5
X
2
O
5
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