Chemistry
The relative atomic mass of nitrogen is 14, and that of hydrogen is 1. This means that (i) …………… of nitrogen has the same mass as (ii) …………… of hydrogen.
| (i) | (ii) | |
|---|---|---|
| 1. | An atom | 28 molecules |
| 2. | An atom | 7 molecules |
| 3. | A molecule | 14 atoms |
| 4. | A molecule | 7 atoms |
Which words correctly complete the gaps?
Stoichiometry
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Answer
An atom / 7 molecules
Reason — Atomic mass of Nitrogen is 14, atomic mass of hydrogen is 1.
7 molecules of hydrogen = 7 x H2 = 7 x 2 (H) = 7 x 2 = 14.
Hence, atomic mass of one atom of nitrogen is same as 7 molecules of Hydrogen.
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