Molarity describes the relationship between moles of a solute and the volume of a solution. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. NaCl molar mass = atomic mass of Na + atomic mass of Cl = 23.0 + 35.4 = 58.4 grams/mole. The equation can be expressed as You could also look at it as multiplying 800 ml by a conversion factor of 1 L / 1000 ml. Plugging these variables into the basic formula for calculating molarity will give you the correct answer. Molar volume changes with temperature and pressure. Better if you solve it yourself, but here is a shortcut. ", "Simple, straightforward explanation. ", converting factors to problems that I come across. The solvent is usually the component of the mixture that is present in the largest amount. Titre en masse ou fraction massique. Molarity=moles of solute/liters of solution. For example; 98% would become 0.98, and 6% would become 0.06. (You can get the molar mass of each element off the periodic chart. Molecular Weight (g/mol) Final Concentration. Calculating Molarity with Moles and Volume, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/47\/Find-Molarity-Step-1.jpg\/v4-460px-Find-Molarity-Step-1.jpg","bigUrl":"\/images\/thumb\/4\/47\/Find-Molarity-Step-1.jpg\/aid3138006-v4-728px-Find-Molarity-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"