Mercury(II) oxide (HgO) decomposes to form mercury (Hg) and oxygen (O2). The balanced chemical equation is shown below.2HgO Right arrow. 2Hg + O2The 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?

15.62 moles of are needed to produce 250.0 g of

Explanation:

To calculate the moles :

According to stoichiometry :

1 mole of is produced from decomposition of =  2 moles of

Thus 7.812 moles of will be produced from decomposition of  = of

Thus 15.62 moles of are needed to produce 250.0 g of