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Chemistry / Chemistry: The Molecular Nature of Matter and Change 5 / Chapter 2 / Problem 2.3

Chemistry: The Molecular Nature of Matter and Change | 5th Edition | ISBN: 9780073048598 | Authors: Martin S. Silberberg

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Which of the following are pure substances Explain. (a) Calcium chloride, used to melt

Chapter 2, Problem 2.3

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QUESTION:

Which of the following are pure substances? Explain. (a) Calcium chloride, used to melt ice on roads, consists of two elements, calcium and chlorine, in a fixed mass ratio. (b) Sulfur consists of sulfur atoms combined into octatomic molecules. (c) Baking powder, a leavening agent, contains 26% to 30% sodium hydrogen carbonate and 30% to 35% calcium dihydrogen phosphate by mass. (d) Cytosine, a component of DNA, consists of H, C, N, and O atoms bonded in a specific arrangement.

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QUESTION:

Which of the following are pure substances? Explain. (a) Calcium chloride, used to melt ice on roads, consists of two elements, calcium and chlorine, in a fixed mass ratio. (b) Sulfur consists of sulfur atoms combined into octatomic molecules. (c) Baking powder, a leavening agent, contains 26% to 30% sodium hydrogen carbonate and 30% to 35% calcium dihydrogen phosphate by mass. (d) Cytosine, a component of DNA, consists of H, C, N, and O atoms bonded in a specific arrangement.

ANSWER:

Step 1 of 5

Pure substance:

Pure substances are substances that are made up of only one kind of particle and has a fixed or constant structure.

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