When Mercury(II) Oxide, a Red Crystalline Solid, Is Heated, It $\rightarrow$

question 50

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) $\rightarrow$ ___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

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