The half-life of `""_(72)Au^(198)` is 2.7 days. How much Au will be left out of 100 mg after 16.2 days'?

Explanation

To solve the problem of how much gold (Au) will be left after 16.2 days, given that the half-life of Au-198 is 2.7 days, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Half-Life**:
The half-life of Au-198 is given as 2.7 days.

2. **Calculate the Number of Half-Lives**:
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