Name Class Date The Mole: Concentration: Quiz 6a
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1. Explain how to make one liter of a 1.25 molar sodium hydroxide solution.
2. How many grams of magnesium cyanide are needed to make 275 mL of a
0.075 M solution?
Name Class Date Answers:
1.
1.25 mol 40.00g
1L x
x
= 50.0g NaOH
1L
1 mol
Add 50.0 g NaOH to a 1 L volumetric flask,
fill to 1.00 L with H 2O.
1L
0.075 mol Mg(CN )2 76.35g
275mL
x
x
x
= 1.57g Mg(CN )2
2.
1000mL
1 L Mg(CN )2
1 mol