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
Correct Answer:
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