How Do You Calculate Gas Volume Using the Ideal Gas Law?

[glocki35]

Homework Statement

Calcualte the volumes in cubic feet of the gases in the attached chart, assuming the gases are ideal

Homework Equations

Ideal gas equation PV=nRT

The Attempt at a Solution

Please see the attached sheet also, this has my attempt, if i use my method and then use a separate calculation units wise and then convert both answers to the same unit format the answers i get everytime is different, this has me confused, my lecturers response was to 'check the example he did in class', i did not write it down

 

[Valkarie]

and i cannot find any examples online, can someone please help me?Assuming you are given the following information:1. Pressure (P) = 1 atm2. Number of moles (n) = 0.25 mol3. Temperature (T) = 300KThe ideal gas equation can be used to solve for the volume of the gas:V = nRT/P V = (0.25 mol) (8.314 J/mol K) (300K) / (1 atm)V = 5.9 LThe volume in cubic feet is calculated by converting the volume into cubic meters and then multiplying by 35.3147 to get the volume in cubic feet:V (ft3) = 5.9 L * (1 m3/1000 L) * (35.3147 ft3/m3)V (ft3) = 0.208 ft3