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Molarity

We all need practice!. Molarity. Molarity. Molarity (M) or molar concentration is a measure of the concentration of a solute in a solution. U nit for molar concentration is mol/L . Molarity (M)= Moles of Solute Liters of Solution.

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Molarity

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  1. We all need practice! Molarity

  2. Molarity • Molarity (M) or molar concentration is a measure of the concentration of a solute in a solution. • Unit for molar concentration is mol/L. Molarity (M)= Moles of Solute Liters of Solution

  3. What is the molarity of a solution that has 0.90g NaCl in 100. mL solution? Step 1: Convert g  mol 1 mol 58g 0.90g X = 0.016 mol Step 2: Convert mL L 1 L 1000mL = 0.100L 100.mL X Step 3: Use Molarity Formula 0.016 mol 0.100L = 0.16 M

  4. How many moles of NaOH are contained in 200mL of 0.25 M NaOH? mol L M = X mol 0.2L 0.25 M = X = 0.05 mol

  5. How many moles of solute are in 1.5L of 0.70M NaCl? mol L M = X mol 1.5L 0.70 M = X = 1.1 mol NaCl

  6. Learning Check • Calculate the molarity of a solution containing 400. g CuSO4 in 4.00 L of solution. 0.627 M

  7. Learning Check • What is the molarity of a solution containing 20 grams of NaOH in 500 milliliters of solution? 1 M

  8. Learning Check • What is the molarity of a solution of NaOH if 2 liters of the solution contain 4 moles of NaOH? 2 M

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