A first order reaction takes `69.3` minutes for `50%` completion. How much time will be needed for `80%` completion?

Explanation

To solve the problem of determining the time required for 80% completion of a first-order reaction, we will follow these steps:

### Step 1: Understand the given data
We know that the half-life (T½) of a first-order reaction is given as 69.3 minutes. For a first-order reaction, the half-life is constant and is given by the formula:
\[ T_{1/2} = \frac{0.693}{k} \]
where \( k \) is the rate constant.

### Step 2: Calculate the rate constant (k)
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