|  |  |  |  |  |  |  |  | 
   
    | • | Which sample
    contains more molecules: 
 |  | 
   
    |  | 
   
    |  | 2.0L of CO2
    at 300K and 500 mm Hg or 
 |  | 
   
    |  | 1.5L of N2
    at 57oC and 760 mm Hg? Which 
 | 
   
    |  | sample weighs
    more? 
 |  | 
   
    |  | 
   
    | • | An aerosol can
    has an internal pressure of 
 |  | 
   
    |  | 
   
    |  | 3.75atm at 25oC.
    What temp is required to 
 |  | 
   
    |  | raise the
    pressure to 16.6atm? 
 |  |