How many moles of oxygen are produced from decomposition of 100.0 g of mercury (ll) oxide

0.231 mol

Explanation:

Given dа ta:

Moles of oxygen produced=?

Mass of mercury (II) oxide = 100 g

Solution:

Chemical equation:

2HgO → 2Hg + O₂

Number of moles of mercury oxide:

Number of moles = mass / molar mass

Number of moles = 100 g / 216.6 g/mol

Number of moles = 0.462 mol

Now we will compare the moles of oxygen with mercury oxide.

HgO : O₂

2 : 1

0.462 : 1/2 * 0.462 = 0.231 mol