What is the molar mass of pure tin (Sn)?

• A. 118.71 g/mol
• B. 207.2 g/mol
• C. 63.55 g/mol
• D. 47.87 g/mol

Answer: (A)

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. Identify the element in question, which is tin (Sn), and recognize that its molar mass corresponds to the atomic mass listed on the periodic table.
3. Locate tin (Sn) on the periodic table and find its atomic mass, which is typically given as a weighted average of its naturally occurring isotopes.
4. Note that the atomic mass of tin (Sn) is approximately 118.71 g/mol, which directly corresponds to its molar mass.
5. Conclude that the molar mass of pure tin (Sn) is 118.71 g/mol, matching the value found on the periodic table.