A gas thermometer measures the temperature from the variation of pressure of a sample of gas. If the pressure measured at the melting point of lead is 2.20 times the pressure measured at the triple point of water, find the melting point of lead.

Explanation

To solve the problem, we need to find the melting point of lead using the relationship between the pressures at the melting point of lead and the triple point of water.

### Step-by-Step Solution:

1. **Understand the Given Information**:
- The pressure at the melting point of lead (P_lead) is 2.20 times the pressure at the triple point of water (P_water).
- The temperature at the triple point of water is known to be 273.16 K.

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