In a callender's compensated constant pressure air thermometer, the volume of the bulb is 1800 cc. When the bulb is kept immersed in a vessel. 200 cc of mercury has to be poured out. Calculate the temperature of the vessel.

Explanation

To solve the problem of calculating the temperature of the vessel using a Callender's compensated constant pressure air thermometer, we can follow these steps:

### Step 1: Understand the Given Information
We are given:
- Volume of the bulb (V) = 1800 cc
- Volume of mercury poured out (V') = 200 cc
- Temperature of the ice bath (T₀) = 273 K

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