For example for KCl, (1 atom X 39.0983 Potassium) + (1 atom X 35.453 Chlorine) = (74.5513 g/mol) which is the molar mass for KCl. The density of the solution is 1.127 g/mL. (The molar mass of NaOCl = 74.44 g/mol and the molar mass of H 2 O is 18.02 g/mol.) What could be the purpose of such a question in a test? Now, 1 liter has 1000 ml in it. Do a quick conversion: 1 moles KCl = 74.5513 gram using the molecular weight calculator and the molar mass of KCl. Preparation of solutions calculator is a useful tool which allows you to calculate how many solid chemicals or stock solutions you will need to prepare the desired solution. Check the chart for more details. (The molar mass of KCl = 74.55 g/mol and the molar mass of H 2 O is 18.02 g/mol.) Explanation of how to find the molar mass of KCl: Potassium chloride. Therefore, a 3 molar solution would contain 74.5 x 3 = 223.5g KCl per liter. Examples: Fe, Au, Co, Br, C, O, N, F. You can use parenthesis or brackets []. If we mass 5.36 g of KCl and dissolve this solid in 56 mL of water, what is the molality of the solution? 1. Does the instructor want to figure out if you can add? The molar mass of KCl is 74.5 (39+35.5). The solid dissolves readily in water, and its solutions have a salt-like taste.Potassium chloride can be obtained from ancient dried lake deposits. Potassium chloride (also known as Sylvite, KCl, or potassium salt) is a metal halide salt composed of potassium and chlorine.It is odorless and has a white or colorless vitreous crystal appearance. Finding Molar Mass. Use uppercase for the first character in the element and lowercase for the second character. The molar mass of KCl can be calculated by taking the sum of the individual molar masses of potassium and chlorine atoms. Just simple math here. Remember that molality is moles of solute/kg per solvent. Massa molar of KCl Massa Molar, Peso Molecular e Calculadora da Composição Elementar If 8.45 g KCl are dissolved in 0.750 L of solution, what is the molarity of the solution? Molar mass calculator computes molar mass, molecular weight and elemental composition of any given compound. We need to prepare a 3M solution in 500 ml. Potassium maintains intracellular tonicity, is required for nerve conduction, cardiac, skeletal and smooth muscle contraction, production of energy, the synthesis of nucleic acids, maintenance of blood pressure and normal renal function. Calculate the molality of 2.0 M MgCl 2 solution. It will calculate the total mass along with the elemental composition and mass of each element in the compound. KCl is our solute, while water is our solvent. Multiply the number of atoms for each chemical multiplied by the atomic mass. You already have two good answers, so the only possibly useful comments I could add are given below. The molar mass of KCl is 74.55 g/mol. 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