Calculating moles in chemistry is essential for understanding chemical reactions and stoichiometry. Here are the steps to find the number of moles:
- Identify the substance’s mass (in grams).
- Locate the molar mass of the substance (g/mol) from the periodic table.
- Use the formula: Moles = Mass (g) / Molar Mass (g/mol).
For example, to calculate moles of water (H2O):
- Mass of water: 18 grams.
- Molar mass: 18 g/mol (H: 1 g/mol, O: 16 g/mol).
- Calculation: Moles = 18g / 18 g/mol = 1 mole.
This simple method helps in understanding chemical quantities and ensuring accurate measurements in laboratory settings.