What is the molar mass of copper (Cu)?

• A. 58.93 g/mol
• B. 65.39 g/mol
• C. 47.87 g/mol
• D. 63.55 g/mol

Answer: (D)

Verified step by step guidance

1. Understand that the molar mass of an element is the mass of one mole of its atoms, usually expressed in grams per mole (g/mol).
2. Locate copper (Cu) on the periodic table to find its atomic mass, which is typically given as a weighted average of its isotopes.
3. Identify the atomic mass of copper, which is approximately 63.55 g/mol according to the periodic table.
4. Recognize that this value represents the molar mass of copper, meaning one mole of copper atoms weighs about 63.55 grams.
5. Confirm that the molar mass is used in stoichiometric calculations and is essential for converting between moles and grams of copper.