A pressure of 3 × 10−7 mm of Hg is achieved in a vacuum system.How many gas molecules are present per liter volume if the temperature is 286 K? (760 mm of Hg = 1 atm,R = 0.082 1 L⋅atm/mol⋅K,and NA = 6.02 × 1023)
A) 6.8 × 1010
B) 8.3 × 1016
C) 10.1 × 1012
D) 1.9 × 109
E) 5.7 × 1014
Correct Answer:
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