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Calculate the molarity of each of the following solutions: (a) 0.195 g of cholesterol, C 27 H 46 O, in 0.100 L of serum, the average concentration of cholesterol in human serum. (b) 4.25 g of NH 3 in 0.500 L of solution, the concentration of NH 3 in household ammonia.
Typically, the solution is for the molarity (M). However, sometimes it is not, so be aware of that. A teacher might teach problems where the molarity is calculated but ask for the volume on a test question.
For example, calculate the molarity of a 795 milliliter solution that is prepared by dissolving 1.64 moles of gold (III) chloride in water. In order to calculate the molarity of a solution, each substance that is referenced in the problem must first be classified as a solute or a solvent.
molarity of a solution is equal to the number of moles of solute divided by the number of liters of solution. 1) In this problem, simply solve using the molarity equation to find that the concentration of the solution is 10 M. 2) To use the molarity equation, you need to convert grams of sodium
To calculate the molarity of a solution, divide the moles of solute by the liters of a solution. The answer is expressed in the unit mol/L. Know the basic formula for calculating molarity. Molarity is equal to the number of moles of a solute divided by the volume of the solution in liters.
Calculate the molarity of each of the following solutions: (a) 0.195 g of cholesterol, C 27 H 46 O, in 0.100 L of serum, the average concentration of cholesterol in human serum. (b) 4.25 g of NH 3 in 0.500 L of solution, the concentration of NH 3 in household ammonia.
The most typical molarity problem looks like this: What is the molarity of _____ grams of [a chemical] dissolved in _____ mL (or L) of solution. To solve it, you convert mass (in grams) to moles, then divide by the volume, like this: