Answer: 83.656 kpa
Step-by-step explanation:
Use Dalton's law of partial pressures which states that the total pressure of a combination of gases is equal to the sum of the partial pressures of the constituent gases.
So we have,
P(total) = P(oxygen) + P(water vapour)
96.00 kpa = 12.344 + P(oxygen)
P(oxygen) = 83.656 kpa