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The Earth's Atmosphere Is Composed Nitrogen (N2),oxygen (O2),argon (Ar),water Vapor

Question 79

Multiple Choice

The Earth's atmosphere is composed nitrogen (N2) ,oxygen (O2) ,argon (Ar) ,water vapor (H2O) ,and traces of other gases.There are 6.74·1016 kg of argon in earth's atmosphere.The average mass of a mole of the atmosphere is 28.96 g and the molar mass of argon is 40 g.What is the percentage,by volume of argon in the Earth's atmosphere?


A) 0.79%
B) 0.53%
C) 0.88%
D) 1.02%
E) 0.93%

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