Multiple Choice
The mole fraction of oxygen in dry air near sea level is 0.20948. The concentration of oxygen is ________ molecules per litre, assuming an atmospheric pressure of 0.985 bar and a temperature of 29.5 °C.
A) 6.23
B) 0.00819
C) 4.94 × 1021
D) 3.75 × 1024
E) 5.07 × 1022
Correct Answer:
Verified
Correct Answer:
Verified
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