Nitrogen makes up 78.08% of the volume of earth's atmosphere, and oxygen makes up 20.95% of the volume. the total air pressure at sea level is 101.3 kpa. from this information, what can be calculated?

a. the parts per million, or number of molecules per 1 million molecules or other particles, of nitrogen and oxygen in earth's atmosphere

b. the sum of the partial pressures of other gases (not nitrogen or oxygen) in earth's atmosphere at sea level

c. the partial pressure of nitrogen and oxygen in earth's atmosphere at sea level

d. all of the other answer choices