Trimix 10/50 is a gas mixture that contains 10% oxygen and 50% helium, and the rest is nitrogen. A tank of Trimix 10/50 has a total pressure of 2.07 * 104 kPa.

What is the partial pressure of oxygen?

Question 1 options:

2.07 * 104 kPa

2.07 * 103 kPa

8.3 * 103 kPa

1.04 * 104 kPa

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

10.063g / 10.00 ml = 1.0063 g/ml which rounds off to 4 sig figs as: 1.006 g/ml

The answer to the question is d