How to calculate moles

 You can calculate the number of moles using the formula:

Moles (n) = Mass (m) / Molar Mass (M)

Where:

• Moles (n) is the quantity you want to calculate.
• Mass (m) is the mass of the substance in grams.
• Molar Mass (M) is the molar mass of the substance in grams per mole.

For example, if you have 50 grams of sodium chloride (NaCl), and you want to find the number of moles, you would use the molar mass of NaCl, which is approximately 58.5 g/mol:

Moles (n) = 50 g / 58.5 g/mol ≈ 0.855 moles

So, there are approximately 0.855 moles of sodium chloride in 50 grams of it.