What is the mass of 2 moles of HgO?

• A. 432.6 g
• B. 216.3 g
• C. 200.6 g
• D. 401.2 g

Answer: (A)

Verified step by step guidance

1. Identify the chemical formula of the compound, which is HgO (mercury(II) oxide).
2. Determine the molar mass of HgO by adding the atomic masses of mercury (Hg) and oxygen (O). Use the periodic table values: atomic mass of Hg ≈ 200.6 g/mol and atomic mass of O ≈ 16.0 g/mol.
3. Calculate the molar mass of HgO using the formula: \(\text{Molar mass of HgO} = \text{Atomic mass of Hg} + \text{Atomic mass of O}\).
4. Use the formula to find the mass of 2 moles of HgO: \(\text{Mass} = \text{Number of moles} \times \text{Molar mass}\).
5. Substitute the values into the formula: \(\text{Mass} = 2 \times \text{Molar mass of HgO}\) to find the total mass of 2 moles of HgO.