Question

For the reaction shown calculate how many grams of oxygen form when each of the following completely reacts

2HgO(s)>>>> 2Hg(l)+O2(g)

A.)2.09g HgO

B.)6.87g HgO

C.)1.99 kg HgO

D.)3.46mg HgO

Answer 1

2 HgO   ------------> 2 Hg (l) + O2 (g)

433.18 g                                    32 g

A)

433.18 g HgO -----------------> 32 g O2

2.09 g HgO    --------------> ??

mass of O2 formed = 2.09 x 32 / 433.18

                                 = 0.154 g O2

B)

mass of O2 formed = 6.87 x 32 / 433.18

                                = 0.508 g O2

c)

mass of O2 formed = 147 g

D)

mass of O2 formed = 2.56 x 10^-4 g