Both m and M are units of the concentration of a chemical solution. The lowercase m indicates molality, which is calculated using moles of solute per kilograms of solvent. A solution using these units is called a molal solution (e.g., 0.1 m NaOH is a 0.1 molal solution of sodium hydroxide). Uppercase M is molarity, which is … See more Molality (m) = moles solute / kilograms solvent The units of molality are mol/kg. Molarity (M) = moles solute / liters solution The units of molarity are mol/L. See more If your solvent is water at room temperature, m and M can be roughly the same, so if an exact concentration doesn't matter, you can use … See more Now that you understand what molarity and molality are, learn how to calculate them and how to use concentrationto determine mass, moles, or volume of the components of a solution. See more Molarity is more common because most solutions are made by measuring solutes by mass and then diluting a solution to the desired concentration with a liquid solvent. For typical lab use, … See more WebAs explained by Austin Mohr, it is the summation operation ∑ k = m n f ( k) (Greek uppercase letter Sigma) which sums every value of f ( k) where every value between m …
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