Calculate the energy equivalent of 1g of substance.

Explanation

To calculate the energy equivalent of 1 gram of substance, we will use Einstein's mass-energy equivalence formula, which is given by:

\[ E = mc^2 \]

### Step-by-Step Solution:

**Step 1: Understand the formula**
- The formula \( E = mc^2 \) states that energy (E) is equal to mass (m) multiplied by the speed of light (c) squared.
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