What is the mass ratio of hydrogen to oxygen in a water molecule?

2:3

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1:8

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1:4

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1:16

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Solution

The correct option is B
1:8

The chemical formula of water is $H_{2} O$ .

The mass of two hydrogen atoms is 2.

The mass of oxygen atom is 16.

Thus ratio of hydrogen to oxygen is 1:8.

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Similar questions

In water, the mass ratio of hydrogen to oxygen is always 1:8.

Hydrogen and oxygen combine in a ratio of 1:8 by mass to form water. What mass of oxygen gas is required to react completely with 3g of hydrogen gas?

In water , the proportion of oxygen and hydrogen by mass is :
(a) 1 : 4
(b) 1 : 8
(c) 4 : 1
(d) 8 : 1

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