Calculate the partial pressure of oxygen gas a diver breathes with a heliox mixture containing 2% oxygen at a depth of 100 metres where the total pressure is 100kPa

To calculate the partial pressure of oxygen gas in a heliox mixture, we need to know the partial pressure of oxygen and the total pressure. The partial pressure is the pressure exerted by one component of a mixture as if it occupied the whole volume alone.

In this case, we are given that the heliox mixture contains 2% oxygen and the total pressure is 100 kPa.

To find the partial pressure of oxygen, we need to calculate 2% of the total pressure:
Partial Pressure of Oxygen = (2/100) * Total Pressure

Substituting the given values:
Partial Pressure of Oxygen = (2/100) * 100 kPa

Simplifying the expression:
Partial Pressure of Oxygen = 2 kPa

So, the partial pressure of oxygen gas that a diver breathes in this heliox mixture at a depth of 100 meters is 2 kPa.