The Mole Fraction of Argon in Dry Air near Sea

Question 121
Multiple Choice

The mole fraction of argon in dry air near sea level is 1.819 × 10-5 where the molar mass of argon is 39.948.The concentration of argon in the atmosphere is ________%. A) 7.23 × 10-5 B) 1.819 × 10-5 C) 9.09 × 106 D) 1.819 × 10-3 E) 9.09 × 10-5