How many liters in a mole

The volume seems correct given the number of moles. If we know the volume of a gas sample at STP, we can determine how much mass is present. What is the mass of the nitrogen gas? We start by determining the number of moles of gas present. We know that In a multi-step problem, be sure that the units check out. Solution Step 1: List the known quantities and plan the problem. Step 2: Calculate. Remember your dimensional analysis. In order to set up the problem correctly all units should cancel until you are only left with the unit that you want: mol.

Density is reported in units mass per volume. If you know the molecular formula of the substance, you can then calculate the molarity of the solution because grams can be converted to mol and mL can be converted to liters. Finally, you can find the number of mol in a certain volume of said substance. How many mols of toluene are in 5 L of toluene? You cannot solve this without knowing that toluene has a density of 0.

This is because as discussed above, there is no way of knowing how many individual molecules of toluene there are without density information. But wait! Right now, you will end up with grams instead of mols. In order to convert from grams to mols you will need to find the molar mass of toluene. Remember that in order to find the molar mass, you find the mass of each element and multiply by the number that exists within the molecule and add it all together.

For toluene that is: This gives a molar mass of Remember: dimensional analysis is your friend. If the units are not cancelling out to leave you with the one unit you want, then you've made a mistake somewhere. You know what you're looking for, so go back and check. She has an interest in astrobiology and manned spaceflight. She has over 10 years of biology research experience in academia. She currently teaches classes in biochemistry, biology, biophysics, astrobiology, as well as high school AP Biology and Chemistry test prep.

This means in 1. How to Convert Grams to Molecules. Density to Molarity Conversion. How to Calculate the Number of Molecules. How to Calculate Solubilities. How to Convert Micrograms to Micromoles.