Use the data below to plot the compaction, zero air void and $90\%$ saturation curves. Determine the optimum moisture content and the max dry density. Show all steps

Mass of mold $kg=2\mathrm{.}031$ volume of $mol{d}^3=0\mathrm{.}000944$

a$.$ determine air content and percent air void at optimum condition only

b$.$ plot the $15\%$ air content curve

c$.$ what would be the new porosity when the degree of saturation changes to $65\%$