When Mercury(II)oxide, a Red Crystalline Solid, Is Heated, It Decomposes

question 110

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 12.3 g of HgO is heated.

• A)22.8 g
• B)11.4 g
• C)5.70 g
• D)13.3 g
• E)6.64 g

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