What is the mass, in grams, of 4.32 mol of GaI_3?

• A. 1,234 g
• B. 2,045 g
• C. 987 g
• D. 1,563 g

Answer: (D)

Verified step by step guidance

1. Identify the given quantity and what is asked: You have 4.32 moles of GaI_3 and need to find the mass in grams.
2. Calculate the molar mass of GaI_3 by adding the atomic masses of its elements: Gallium (Ga) and Iodine (I). Use the periodic table values for atomic masses (Ga ≈ 69.72 g/mol, I ≈ 126.90 g/mol). The formula is: \(\text{Molar mass of GaI}_3 = 69.72 + 3 \times 126.90\) g/mol.
3. Multiply the number of moles by the molar mass to find the mass in grams using the formula: \(\text{Mass} = \text{moles} \times \text{molar mass}\).
4. Substitute the values: \(\text{Mass} = 4.32 \times (69.72 + 3 \times 126.90)\) g.
5. Perform the multiplication to get the mass in grams, which will give you the final answer.