A Pressure of 1

question 45

Multiple Choice

A pressure of 1.0 x 10^-7 mm of Hg is achieved in a vacuum system.How many gas molecules are present per liter volume if the temperature is 293 K? (760 mm of Hg = 1 atm,R = 0.082 1 L*atm/mol*K,and N_A = 6.02 x 10²³)

• A)16 x 10¹⁸
• B)4.7 x 10¹⁶
• C)3.3 x 10¹²
• D)3.4 x 10⁹

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