Liters to Moles Formula Unlike converting the mass in grams to moles, converting the volume of gas in liters to moles uses a simple conversion formula. At standard temperature and pressure [STP], 1 mole of ideal gas is equal to 22.4 liters.
A pencil and paper. Calculations are easier to solve when you write them out. Be sure to show all your steps to get full credit. A periodic table. You will need to be able to find atomic weight of elements using the periodic table. A calculator. Calculators are necessary to simplify calculations of complex numbers.
To convert between moles and liters you need to remember that one mole of a gas occupies 22.4 liters. Method 1 ( watch video tutorial ): Use the conversion factor: 1 mol gas = 22. 4L. Method 2: ( watch video tutorial) When going from moles to liters you multiply by 22.4. When going from liters to moles you divide by 22.4.
This means that one liter of an ideal gas at STP contains (6.022 * 10^23) / 22.4 = approximately 2.688 * 10^22 molecules. How many molecules are there in a liter? The liter of water has 1000 grams. The number of moles is 1000/18 = 55.556 moles. The number of molecules is therefore 6.022*1023 * 55.556 = 3.346*1025 molecules.
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