1. a) An aqueous solution is made by dissolving 25.2 grams of iron(II) chloride in 415 grams of water. The molality of iron(II) chloride in the solution is_____ m. b)In the laboratory you are asked to make a 0.716 m magnesium nitrate solution using 315 grams of water. How many grams of magnesium nitrate should you add? _______grams. c)In the laboratory you are asked to make a 0.350 m cobalt(II) bromide solution using 13.5 grams of cobalt(II) bromide.

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter3: Mass Relations In Chemistry; Stoichiometry
Section: Chapter Questions
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1.

a)

An aqueous solution is made by dissolving 25.2 grams of iron(II) chloride in 415 grams of water.

The molality of iron(II) chloride in the solution is_____ m.

b)In the laboratory you are asked to make a 0.716 m magnesium nitrate solution using 315 grams of water.

How many grams of magnesium nitrate should you add?
_______grams.

c)In the laboratory you are asked to make a 0.350 m cobalt(II) bromide solution using 13.5 grams of cobalt(II) bromide.

How much water should you add?
______grams

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