2.4 Exercise 15

(a) Find the density in SI units of air at a pressure of 1.00 atm and a temperature of $20 °\text{C}$, assuming that air is $78 \% \text{N}_{2} , 21 \% \text{O}_{2} , \text{and} 1 \% \text{Ar}$, (b) Find the density of the atmosphere on Venus, assuming that it’s $96 \% \text{CO}_{2} \text{and} 4 \% \text{N}_{2}$, with a temperature of 737 K and a pressure of 92.0 atm.