Multiple Choice
When mercury(II) oxide, a red crystalline solid, is heated, it decomposes to form liquid mercury and oxygen gas, according to the following equation: ___HgO(s) → ___Hg(l) + ___O2(g) (unbalanced) Balance the equation and determine the mass of mercury that should be formed when 15.6 g of HgO is heated.
A) 28.9 g
B) 7.22 g
C) 14.4 g
D) 16.9 g
E) 13.2 g
Correct Answer:

Verified
Correct Answer:
Verified
Q80: When calculating the percent yield for a
Q81: Given that 4NH<sub>3</sub>(g)+ 5O<sub>2</sub>(g)→ 4NO(g)+ 6H<sub>2</sub>O(g), if
Q82: When a 0.525 g piece of zinc
Q83: Ammonia is usually made by the following
Q84: The figure shows a molecular-level diagram of
Q86: Phosphine, PH<sub>3</sub>, a reactive and poisonous compound,
Q87: A 2.50 g sample of pitted prunes
Q88: When mixed, solutions of silver nitrate, AgNO<sub>3</sub>,
Q89: The q value for the following reaction
Q90: When potassium metal is exposed to air,