The mole fraction of neon in dry air near sea level is 1.818 × 10^-⁵where the molar mass of neon is
20) 183. The concentration of neon in the atmosphere is _ _ ppm.

Question

The mole fraction of neon in dry air near sea level is 1.818 × 10^-⁵where the molar mass of neon is 20)183. The concentration of neon in the atmosphere is _ _ ppm.

Quizplus · Accepted Answer

The mole fraction of neon in air is given as 1.818 × 10^-4. This means that for every million molecules of air, there are 1.818 neon molecules. To find the concentration in parts per million (ppm), we multiply the mole fraction by 10^6. Therefore, the concentration of neon in air is 1.818 × 10^-4 x 10^6 = 18.18 ppm. Therefore, the best choice is C.

The Mole Fraction of Neon in Dry Air near Sea