$1.)$ A representative soil specimen collected from the field weighs $36\mathrm{.}10$ kN and has a

volume of $1\mathrm{.}08$ m $3.$ The water content as determined in the laboratory is $72\mathrm{.}0\%.$

What will be the dry unit weight of the soil?

$2.)$ If porosity of a soil is $48\mathrm{.}0\%,$ then its void ratio will be