Question

on heating 216 gram of mercuric oxide we get x g of Mercury and 16 gram of oxygen the value of x is

Answer 1

200 grams,because the mass of the reactants is equal to the mass of products.

Answer 2

Answer: The value of x is 200 grams.

Explanation:

$2HgO\rightarrow 2Hg+O_2$

moles of HgO= $\frac{\text{mass of Hgo}}{\text{Molar mass of HgO}}=\frac{216 g}{216.59 g/mol}=0.9972 mol$

According to reaction, 2 moles of HgO gives 2 ,moles of Hg then 0.9972 moles of HgO will give:$\frac{2}{2}\times 0.9972$ moles of Hg.

Mass of Hg =x grams= Moles of Hg$\times$ Molar mass of Hg

=0.9972 mol$\times$ 200.59 g/mol =200.02 grams$\approx200 g$

The value of x is 200 grams.