Molarity & Dilution.

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Molarity & Dilution

substance being dissolved Recall Molarity… Concentration of a solution. substance being dissolved total combined volume

2M HCl What does this mean?

Molarity Calculations 6.02  1023 (particles/mol) molar mass (g/mol) MASS IN GRAMS MOLES NUMBER OF PARTICLES LITERS SOLUTION Molarity (mol/L)

How many grams of NaCl are required to make 0.500L of 0.25M NaCl? 0.25 mol 1 L 58.44 g 1 mol = 7.3 g NaCl

Find the molarity of a 250 mL solution containing 10.0 g of NaF. = 0.238 mol NaF 0.238 mol 0.25 L M = = 0.95M NaF

Dilution Preparation of a desired solution by adding water to a concentrate. Moles of solute remain the same.