Oxygen and chlorine gas are mixed in a container with partial pressure of 401 mmHg and 136 mmHg Respectively. What is the total pressure inside the container?

537 mmHg is the total pressure

Explanation:

In a mixture of gases, the total pressure from the mixture is the sum of the partial pressure from each gas in the mixture.

Our mixture contains O₂ and Cl₂

Partial pressure O₂ + Partial pressure Cl₂ = Total pressure

401 mmHg + 136 mmHg = 537 mmHg

Total pressure → 537 mmHg

This is the Dalton's Law,  the total pressure of a mixture of gases is equal to the sum of the partial pressures of the gases that are contained in the mixture.