Mercury(ii) oxide (hgo) decomposes to form mercury (hg) and oxygen (o2). the balanced chemical equation is shown below. 2hgo mc020-1.jpg 2hg + o2 the molar mass of hgo is 216.59 g/mol. the molar mass of o2 is 32.00 g/mol. how many moles of hgo are needed to produce 250.0 g of o2?

moles of HgO needed to produce 250.0 g of O2 = 15.63 moles

Explanation:

The chemical reaction is:

Amount of O2 produced = 250.0 g

Molar mass of HgO = 216.59 g/mol

Molar mass of O2 = 32.00 g/mol

Moles of O2 produced =

Based on the reaction stoichiometry:

2 moles of HgO produces 1 mole of O2

Therefore, moles of HgO needed to produce 7.813 moles of O2 is:

=

thats how its supposed to be