Answer:
A
Step-by-step explanation:
2 mol HgO : 1 mol O2
1 mol HgO is 216.589 grams
2 mol HgO is 433.178 grams
433.178 grams HgO : 1 mol O2
(0.726) 433.178 grams HgO : (0.726) 1 mol O2
314.4 grams HgO : 0.726 mol O2
or just 314 grams
1.6m questions
2.0m answers