Answer
The total pressure exerted by the gas mixture is equal to 765 torr.
Work Step by Step
1. Identify the equation that we will use to solve this problem.
- The sum of the partial pressures.
$P_{total} = P_1 + P_2 + P_3 + ...$
2. Substitute the given values into the equation, and calculate the total pressure:
$P_{total} = 425 \space torr + 115 \space torr + 225 \space torr$
$P_{total} = 765 \space torr$
