To calculate the total pressure inside the container holding multiple gases, you can use Dalton's Law of Partial Pressures. According to this law, the total pressure \( P_{total} \) is the sum of the partial pressures of each individual gas.
Given:
- Partial pressure of oxygen (\( P_{O_2} \)) = 2.00 atm
- Partial pressure of carbon dioxide (\( P_{CO_2} \)) = 3.00 atm
- Partial pressure of helium (\( P_{He} \)) = 4.00 atm
Using Dalton's Law: \[ P_{total} = P_{O_2} + P_{CO_2} + P_{He} \]
Substituting the given values: \[ P_{total} = 2.00 , \text{atm} + 3.00 , \text{atm} + 4.00 , \text{atm} = 9.00 , \text{atm} \]
Thus, the total pressure inside the container is: \[ P_{total} = 9.00 , \text{atm} \]
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