How many grams of aluminum are present in 3.0 moles of aluminum (Al)? (Atomic mass of Al = 27.0 g/mol)

• A. 27.0 g
• B. 81.0 g
• C. 3.0 g
• D. 9.0 g

Answer: (B)

Verified step by step guidance

1. Identify the given information: the number of moles of aluminum (Al) is 3.0 moles, and the atomic mass of aluminum is 27.0 g/mol.
2. Recall the relationship between moles, molar mass, and mass: \(\text{mass} = \text{moles} \times \text{molar mass}\).
3. Substitute the known values into the formula: \(\text{mass} = 3.0\ \text{moles} \times 27.0\ \text{g/mol}\).
4. Multiply the number of moles by the molar mass to find the mass in grams.
5. Express the final answer as the mass of aluminum in grams corresponding to 3.0 moles.