What mass (in kg) does 5.01 moles of iron (Fe) have? (Molar mass of Fe = 55.85 g/mol)

• A. 0.559 kg
• B. 0.055 kg
• C. 0.140 kg
• D. 0.280 kg

Answer: (D)

Verified step by step guidance

1. Identify the given information: number of moles of iron (Fe) is 5.01 moles, and the molar mass of Fe is 55.85 g/mol.
2. Recall the formula to calculate mass from moles: \(\text{mass} = \text{moles} \times \text{molar mass}\).
3. Calculate the mass in grams by multiplying the moles by the molar mass: \(\text{mass (g)} = 5.01 \times 55.85\).
4. Convert the mass from grams to kilograms by dividing by 1000: \(\text{mass (kg)} = \frac{\text{mass (g)}}{1000}\).
5. Compare the calculated mass in kilograms to the given options to identify the correct answer.