How do I go from moles to grams?

In order to convert the moles of a substance to grams, you will need to multiply the mole value of the substance by its molar mass.

How do you convert moles to grams?

Divide the mass of the substance in grams by its molecular weight. This will give you the number of moles of that substance that are in the specified mass. For 12 g of water, (25 g)/(18.015 g/mol) = 0.666 moles.

What are the three steps to converting moles to grams?

There are three steps to converting moles of a substance to grams: Determine how many moles are given in the problem. Calculate the molar mass of the substance.


  1. Get the moles: …
  2. Get the molar mass: …
  3. Following step three, we obtain: 2.50 moles x 122.550 g/mole = 306.375 grams.

How do you convert grams to moles?

Divide the number of grams of the compound, NaOH, by the molecular weight and as a result, the grams (g) unit cancels and all we have left is the unit mol (moles).

How do you do Stoich?

Almost all stoichiometric problems can be solved in just four simple steps:

  1. Balance the equation.
  2. Convert units of a given substance to moles.
  3. Using the mole ratio, calculate the moles of substance yielded by the reaction.
  4. Convert moles of wanted substance to desired units.
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