Relationship between Mass and Moles?

📌 CONCEPT: The relationship between mass and moles is based on the molar mass of a substance, which is the mass of one mole of that substance in grams.

📐 RULE / FORMULA: The relationship is given by the formula: Moles = Mass / Molar Mass.

💡 WORKED EXAMPLE: To find the number of moles of glucose in a 2.0-g sample, we use the formula: Moles = 2.0 g / 180 g/mol = 0.0111 mol. This means that there are 0.0111 moles of glucose in the given sample.

⚠️ COMMON MISTAKE: Students often forget to check the units of molar mass and mass before calculating moles, which can lead to incorrect results.