Answer:
<em>A ) 7 GRAMS</em>
Explanation:
7 grams.
The sum of the reactants must equal the sum of the products.
Reactant = 100 grams
Products = 100 g mercuric oxide - 93 g mercury which equals 7 grams oxygen.
Answer:
-50
Explanation:
Sum of 6 + sum of 4 = -100
100 + sum of 4 = -100
sum of 4 = -200
Avg of 4 = -200/4 = -50