Question

When mercury(II) oxide is heated, it decomposes into mercury and oxygen gas. How many molecules of oxygen gas are produced if 6.54g of mercury(II) oxide are heated?

Answer 1

`9.09*10^(21) molecules O_2`

Step-by-step explanation:

The formula for Mercury(II) Oxide is
`HgO`

Balanced Equation:
`2HgO = 2Hg + O_2`

Stoichiometry:
`(6.54g HgO)*((1molHgO)/(216.59gHgO))*((1molO_2)/(2molHgO))*((6.02*10^(23)molecules O_2)/(1molO_2))= 9.09*10^(21)moleculesO_2`