To convert grams to moles, you can use the following formula:

Formula

moles=mass in gramsmolar mass (g/mol)\text{moles}=\frac{\text{mass in grams}}{\text{molar mass (g/mol)}}moles=molar mass (g/mol)mass in grams​

Steps to Convert Grams to Moles:

1. Find the molar mass of the substance (in grams per mole).
   • This is usually found on the periodic table by adding the atomic masses of all atoms in the molecule.
   • For example, the molar mass of water (H₂O) is approximately 18.02 g/mol (2 × 1.01 for hydrogen + 16.00 for oxygen).
2. Measure the mass of your sample in grams.
3. Divide the mass by the molar mass to get the number of moles.

Example:

Convert 36 grams of water (H₂O) to moles.

• Molar mass of H₂O = 18.02 g/mol
• Mass = 36 g

moles=36 g18.02 g/mol≈2 moles\text{moles}=\frac{36\text{ g}}{18.02\text{ g/mol}}\approx 2\text{ moles}moles=18.02 g/mol36 g​≈2 moles

So, 36 grams of water is approximately 2 moles. If you want, I can help you calculate for a specific substance!