A soil sample has been extracted from a field, to perform a series of tests.

When it arrives at the laboratory, the mass of soil weighs $21170\mathrm{.}00$ g$,$ after drying in an oven at a temperature of $110\backslash$deg C for $16$ hours, its weight is

drying it in an oven at a temperature of $110\backslash$deg C for $16$ hours its weight is $1837\mathrm{.}70$g$.$

$1837\mathrm{.}70$g$,$ we ask:

a$.$ Determine the initial $\%$ moisture content of the sample.

b$.$ Draw the granulometric curve of the soil.

c$.$ Estimate the coefficient of uniformity Cu and the coefficient of curvature Cc$.$

d$.$ Indicate whether the soil is uniform or heterogeneous.