How do i calculate molarity?
Scientists use molarity to designate the amount of a chemical (solute) in a volume of solution. Typically, the units in which molarity is reported are moles per liter, and a capitalized “M” is used as a symbol for the words “moles per liter.” A one molar solution of sodium chloride (salt, or NaCl) is frequently referred to as a 1.0 molar or 1.0 M NaCl solution. Calculation of the molarity of a solution thus involves determining how many moles of the solute (e.g., NaCl) are present in a liter of the solution. Calculating Moles One mole is Avagadro’s number: 6.022 * 10^23 units of anything. In the case of molarity of a solution, 1 mole refers to 6.022 * 10^23 molecules of a compound such as NaCl. It is a simple matter to calculate the number of moles of a compound from its weight. This is done by weighing the compound and dividing the weight by the gram molecular weight (GMW) of the compound. You need to look up the atomic weights of each element in the compound. You can find the atomic
