Heliox is a mixture of gases and is used in medicine to help people with breathing problems such as severe asthma. A typical heliox mixture contains He at a partial pressure of 0. 75 atm and O2 at a partial pressure of 0. 35 atm.

(a) What is the total pressure of the Heliox mixture?

(b) What fraction of the molecules in Heliox are helium?

(c) Draw a particulate representation of Heliox that contains 10 particles