Question

Please help, with step by step work

Answer 1

$\qquad$ ☀️$\pink{\bf{ {Answer = \: \: 85.57g }}}$

Molar mass of $\bf Cu_2O$

$\qquad$ $\twoheadrightarrow\sf 63.546 \times 2 +16$

$\qquad$ $\pink{\twoheadrightarrow\bf 143.092 g}$

As we know–

1 mol =$\bf 6.02×10^{23}$ formula units

1 mol$\bf Cu_2O$ = 143.092 g = $\bf 6.02×10^{23}$formula units

Henceforth –

$\bf 3.60×10^{23}$ formula units $\bf Cu_2O$–

$\qquad$ $\sf :\implies \dfrac{143.092 \times3.60×10^{23 }}{6.02×10^{23}}$

$\qquad$ $\sf :\implies \dfrac{143.092 \times3.60×\cancel{10^{23 }}}{6.02×\cancel{10^{23}}}$

$\qquad$ $\pink{:\implies\bf 85.57 g}$