Please answr what wuestion asks!!!!!

Carbozole has a $K_D$ of $3\mathrm{.}35$ between $H_{2}O$ and chloroform. A young chemist is trying to extract carbozole from

freshwater samples. A $45\mathrm{.}00-mL$ sample of a $0\mathrm{.}045M$ aqueous solution of the solute is extracted with

chloroform.

i$)$ How many extractions are needed to achieve an extraction efficiency of $99\mathrm{.}9\%$ if $20\mathrm{.}00mL$ of

chloroform is used each time? $(5$ marks$)$

ii$)$ What volume of chloroform is needed to achieve an extraction of $99\mathrm{.}99\%$ if $5$ extractions are

performed? $(5$ marks$)$