Why is the use of relative masses of atoms preferred over their actual masses ?

Explanation

### Step-by-Step Solution:

1. **Understanding Atomic Mass**: Atoms have very small masses, typically measured in atomic mass units (amu). For practical purposes, these masses can be extremely small when expressed in kilograms.

2. **Relative Atomic Mass**: The relative atomic mass of an element is defined as the mass of its atom compared to the mass of a standard carbon atom (specifically carbon-12). This allows for a more manageable scale when discussing atomic masses.

3. **Convenience in Calculations**: Using relative atomic masses simplifies calculations in chemistry. Instead of dealing with very small numbers (in kilograms), chemists can use whole numbers or simple fractions that are easier to work with.

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