david
a. I can't draw on my computer
b. 4.20 X (1mol/58) X (8/2) = use a calulator = A moles CO2
... PV = nRT << use A from above as n
V = A(0.0821)(298)/1.25 <<< use calculator
c. Must have temp and pressure .. if same as b (above)
. . Take Answer for V above X 10/8
d. Kenetic Theory .. (1/2)mv^2 --- at same temp, the ave KE is the same, so according to this equation, the velocities will NOT be the same. H2O mlecules have less mass so they will have greater velocities.