The ratio of hydrogen and oxygen by mass in water is:
8:1
1:8
2:1
1:2
A
1:8
B
8:1
C
1:2
D
2:1
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Solution
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The ratio of hydrogen and oxygen by mass in water is 1:8. The atomic masses of H and O are 1 g/mol and 16 g/mol respectively. In H2O, the ratio of hydrogen and oxygen by mass will be 2:16=1:8.
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