Chemistry
9th Edition
ISBN: 9781133611097
Author: Steven S. Zumdahl
Publisher: Cengage Learning
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Chapter 1, Problem 90AE
In Shakespeare’s Richard III, the First Murderer says: “Take that, and that! [Stabs Clarence]
If that is not enough, I’ll drown you in a malmsey butt within!” Given that 1 butt = 126 gal, in how many liters of malmsey (a foul brew similar to mead) was the unfortunate Clarence about to be drowned?
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A chemist prepares a solution of iron (II) bromide (FeBr₂) by measuring out 46.4 mg of FeBr₂ into a 50. mL volumetric flask and filling to the mark with
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Calculate the molarity of Br anions in the chemist's solution.
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Calculating ion molarity using solute mass
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Imagine you are working in a lab, and you want to prepare a solution of cobalt(II) chloride. You know that the chemical is purchased in the solid form as a hydrate. You find the reagent bottle containing a vibrant purple solid; however, the chemical formula and molecular weight are obscured such that you can't read how many waters are associated with the ionic solid. You don't want to be wasteful, so you decide to determine the number of waters by heating the solid and taking the mass difference (a la the hydrate lab!). You carefully weigh out exactly 1.0096 g of the unknown hydrate. You gently heat the compound over a low flame until the mass stops changing and the deep purple color fades. The mass of the remaining compound is 0.6492 g. Determine the chemical formula of the original compound.
(The ? stands for a number the student is going to calculate.)
Fill in the missing part of this equation.
Note: your answer should be in the form of one or more fractions multiplied together.
(-5.1 x 10' Pa cm'
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Chapter 1 Solutions
Chemistry
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY