# Question #748ea

##### 1 Answer

The pressure in the chamber is (c) 258 torr.

#### Explanation:

According to **Dalton's Law of Partial Pressures**, each gas will exert its own partial pressure in the chamber.

Since the temperature is constant, we can use **Boyle's Law** to calculate the partial pressure of each gas in the chamber.

The formula for Boyle's Law is

**Step 1. Calculate the partial pressure of neon in the chamber.**

Boyle's Law can be rearranged to

∴

**Step 2. Calculate the partial pressure of helium in the chamber.**

∴

**3. Calculate the total pressure in the chamber.**

The pressure in the chamber is 248 torr.