How many moles of CO are contained in a 5.00 L tank at 155 °C and 2.80 bar?
A) 0.393 moles
B) 1.10 moles
C) 2.51 moles
D) 0.455 moles
E) 0.289 moles

Question

Quizplus · Accepted Answer

The ideal gas law can be used to calculate the number of moles of CO in the tank:PV = nRTwhere P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.Substituting the given values into the equation:(2.80 bar)(5.00 L) = n(0.0821 Latm/(molK))(428 K)Solving for n:n = 0.393 molesTherefore, the correct answer is A: 0.393 moles.

How Many Moles of CO Are Contained in a 5