At a constant volume, a gas exerts a pressure of 660 kPa at 602 ºC. At what temperature, in Celsius, will the pressure reduce to 330 kPa?

165 °C

Explanation:

Given data

Step 1: Convert the initial temperature to Kelvin

When working with gases, we always have to use the Kelvin scale. We can convert from Celsius to Kelvin using the following expression.

Step 2: Calculate the final temperature

We will use the Gay-Lussac's law.

Step 3: Convert the final temperature to Celsius