the stopper. 2. A stopper was found to have a mass of 5.06 g. When placed in a graduated cylinder containing 45.2 mL of water, the volume of stopper and water was found to be 49.4 mL. Calculate the density of 3. A chemist was given four unidentified, water-insoluble cubes measuring 1 x 1 x 1 cm and asked to arrange these substances in order of their increasing density. These cubes were labeled A, B, C, and D. given below. As a reference, the chemist was also given the following liquids, whose densities in g mL-¹ at 20 °C are -1 water toluene least dense 0.9982 0.8669 nitromethane chloroform answer 1.1371 1.4832 The chemist added one of the four substances to one of the liquids and observed whether the substance floated or sank. By repeating this procedure with the other substances and liquids, he was able to make a series of observations about the relative densities of the substances and the liquids. Use the following selected observations to arrange the four unknown substances in order of increasing density. Briefly defend your order. (1) Substance A sank in chloroform. (2) Substance B floated in water but sank in toluene. (3) Substance C sank in water but floated in chloroform and nitromethane. (4) Substance D sank in nitromethane but did not sink as rapidly as Substance A did in nitromethane. most dense
the stopper. 2. A stopper was found to have a mass of 5.06 g. When placed in a graduated cylinder containing 45.2 mL of water, the volume of stopper and water was found to be 49.4 mL. Calculate the density of 3. A chemist was given four unidentified, water-insoluble cubes measuring 1 x 1 x 1 cm and asked to arrange these substances in order of their increasing density. These cubes were labeled A, B, C, and D. given below. As a reference, the chemist was also given the following liquids, whose densities in g mL-¹ at 20 °C are -1 water toluene least dense 0.9982 0.8669 nitromethane chloroform answer 1.1371 1.4832 The chemist added one of the four substances to one of the liquids and observed whether the substance floated or sank. By repeating this procedure with the other substances and liquids, he was able to make a series of observations about the relative densities of the substances and the liquids. Use the following selected observations to arrange the four unknown substances in order of increasing density. Briefly defend your order. (1) Substance A sank in chloroform. (2) Substance B floated in water but sank in toluene. (3) Substance C sank in water but floated in chloroform and nitromethane. (4) Substance D sank in nitromethane but did not sink as rapidly as Substance A did in nitromethane. most dense
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 48E: Although the preferred SI unit of area is the square meter, land is often measured in the metric...
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Question
Transcribed Image Text:the stopper.
2. A stopper was found to have a mass of 5.06 g. When placed in a graduated cylinder containing
45.2 mL of water, the volume of stopper and water was found to be 49.4 mL. Calculate the density of
3. A chemist was given four unidentified, water-insoluble cubes measuring 1 x 1 x 1 cm and asked to
arrange these substances in order of their increasing density. These cubes were labeled A, B, C, and D.
given below.
As a reference, the chemist was also given the following liquids, whose densities in g mL-¹ at 20 °C are
-1
water
toluene
least dense
0.9982
0.8669
nitromethane
chloroform
answer
1.1371
1.4832
The chemist added one of the four substances to one of the liquids and observed whether the
substance floated or sank. By repeating this procedure with the other substances and liquids, he was
able to make a series of observations about the relative densities of the substances and the liquids. Use
the following selected observations to arrange the four unknown substances in order of increasing
density. Briefly defend your order.
(1) Substance A sank in chloroform.
(2) Substance B floated in water but sank in toluene.
(3) Substance C sank in water but floated in chloroform and nitromethane.
(4) Substance D sank in nitromethane but did not sink as rapidly as Substance A did in nitromethane.
most dense
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