How many atoms of helium occupy 100.0 mL if the temperature is 100.°C and the pressure is 1.00 × 10-2 Torr?
A) 2.00 × 1019
B) 3.26 × 10-5
C) 1.97 × 1013
D) 4.00 × 1019
E) 6.02 × 1023
Correct Answer:
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