Please i need this answer no later than Sunday night 3-6-2005!!!!!!!!!!!

The vertical SO2 column in the plume from Mt. Pinatubo, integrated
from the surface to the top of the stratosphere was 3x10^16
molecules/cm^2.We wish to estimate the amount of aerosol surface area
that this SO2 would produce if converted to H2SO4 aerosol. Assume
complete conversion of this SO2 to aqueous H2SO4 particles of mean
size of 0.1 micrometer diameter and 75% mass concentration H2SO4 / 25%
mass concentration H2O.
Calculate the resulting column-integrated aerosol surface area in micro m^2 / cm^2

Note: to convert this to an aerosol surface area concentration, assume
that the entire aerosol is confined to a uniform layer of 5km thick.