Mercury vapor contains Hg atoms. What is the volume of 200. g of mercury vapor at 822 K and 0.415 atm?
A) 162 L
B) 27.9 L
C) 216 L
D) 108 L
E) 324 L

Question

Quizplus · Accepted Answer

The correct answer is A.The molar mass of mercury (Hg) is 200.59 g/mol. Therefore, 200 g of mercury vapor contains 200 g / 200.59 g/mol = 0.997 mol of Hg atoms.Using the ideal gas law, PV = nRT, we can calculate the volume of the mercury vapor:V = nRT / PV = (0.997 mol)(0.0821 Latm/(molK))(822 K) / (0.415 atm)V = 162 LTherefore, the volume of 200 g of mercury vapor at 822 K and 0.415 atm is 162 L.

Mercury Vapor Contains Hg Atoms