Chemistry 520Winter Quarter 2008Take Home Quiz 2This quiz is due no later than 4 pm on Friday, Feb. 1, 2008 in room 0048 McPherson lab.Write down first the mathematical equation with symbols and leave the numerical substitution at the end.Submit your answers on single sided paper.1. A sample of CH4(g)having a volume of 2.80 liters at 25◦C and 1.65 atm, was ignited with a sample of oxygengas having a volume of 35.0 liters at 31◦C and 1.25 atm to produce CO2and H2O vapor. Calculate the volumeof CO2formed at a pressure of 2.50 atm and a temperature of 125◦C.2. Estimate the molar volume of CO2at 500 K and 100 atm by treating it as a van der Waals gas.3. Assume that a nitrogen molecule acts as a hard sphere with radius 1.60˚A. If you have a vacuum chamber thatis 1.00 m on a side, to what pressure would it have to be pumped down in order that a nitrogen molecule hasa reasonable chance of not colliding with another nitrogen molecule going from one side to the other (that is,the mean free path is 1.00 m)? Assume a temperature of 22.0
This is the end of the preview.
access the rest of the document.