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(i) How would you define the terms atomi...

(i) How would you define the terms atomic mass and molecular mass ?
(ii) Nitrogen occurs in nature in the form of two isotopes with atomic masses 14 and 15 respectively. If the average atomic mass of nitrogen is 14.0067, what is the percent abundance of the two isotopes ?

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### Step-by-Step Solution **(i) Definition of Atomic Mass and Molecular Mass:** 1. **Atomic Mass:** - The atomic mass of an element is defined as the mass of a single atom of that element, measured in atomic mass units (amu or u). It reflects the average mass of the isotopes of that element, weighted by their natural abundance. For example, the atomic mass of oxygen (O) is approximately 16 u. 2. **Molecular Mass:** ...
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