How many grams are in 11.9 moles of chromium (Cr)? (Atomic mass of Cr = 52.0 g/mol)

• A. 142.8 g
• B. 61.9 g
• C. 618.8 g
• D. 619.8 g

Answer: (C)

Verified step by step guidance

1. Identify the given information: the number of moles of chromium (Cr) is 11.9 moles, and the atomic mass of chromium is 52.0 g/mol.
2. Recall the relationship between moles, molar mass, and mass: \(\text{mass (g)} = \text{moles} \times \text{molar mass (g/mol)}\).
3. Set up the calculation using the formula: \(\text{mass} = 11.9 \text{ moles} \times 52.0 \text{ g/mol}\).
4. Multiply the number of moles by the molar mass to find the mass in grams.
5. Express the final answer with the correct units (grams) and consider significant figures based on the given data.