Question

Calculate the ratio by mass of the combining elements in the following compounds:

1.carbon dioxide
2.ammonia
3.water

Answer 1

Answer:

The chemical formula of ammonia is NH

3

. Atomic mass of nitrogen is 14 and of hydrogen is 1×3=3 units.

N:H×3

14:1×3

14:3

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Answer 2

Answer:

c) Ratio of mass of H2O = mass of H molecules: mass of O molecules

= (1×2):(16)

= 2:16

= 1:8