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A mixture of helium, nitrogen, and oxygen has a total pressure of 756 mmHg. The partial pressures of helium and nitrogen are 229 mmHg and 205 mmHg, respectively. What is the partial pressure of oxygen in the mixture?

Respuesta :

dsdrajlin

Answer:

322 mmHg

Explanation:

Step 1: Given data

  • Total pressure of the gaseous mixture (P): 756 mmHg
  • Partial pressure of helium (pHe): 229 mmHg
  • Partial pressure of nitrogen (pNâ‚‚): 205 mmHg

Step 2: Calculate the partial pressure of oxygen (pOâ‚‚)

The total pressure of the gaseous mixture is equal to the sum of the partial pressures of the individual gases.

P = pHe + pNâ‚‚ + pOâ‚‚

pOâ‚‚ = P - pHe - pNâ‚‚

pOâ‚‚ = 756 mmHg - 229 mmHg - 205 mmHg

pOâ‚‚ = 322 mmHg

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