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Step 1:: Understand the concept of molarity
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Molarity (M) is a unit of concentration in chemistry, which describes the amount of solute (usually in moles, mol) present in a solution per liter of solution (L). The formula to calculate molarity is as follows:
Step 2:: Determine the number of moles of solute $(n)$
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To determine the number of moles of solute, you need to multiply the mass of the solute (in grams, g) by the reciprocal of its molar mass (in g/mol). The formula is as follows:
Step 3:: Determine the volume of the solution $(V)$
The volume of the solution should be given in liters (L). If the volume is given in another unit (e.g., mL or cm³), convert it to liters first.
Final Answer
To calculate the average molarity, you need to determine the total number of moles of solute and the total volume of the solutions, and then divide the total number of moles by the total volume. Remember to use the correct units and the appropriate number of significant figures when reporting the average molarity.
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