$3\mathrm{.}4\mathrm{.}2$ Adding $1\mathrm{.}530{10}^{3}J$ of electrical energy to a constant$-$pressure calorimeter changes the water temperature from $20\mathrm{.}50C$ to

$21\mathrm{.}85C.$ When $1\mathrm{.}75g$ of a solid salt is dissolved in the water, the temperature falls from $21\mathrm{.}85C$ to $21\mathrm{.}44C.$ Find the value of $q_p$ for

the solution process.