1. Classify each of the following as element, compound, solution or heterogeneous mixture.a. Goldb. Sugarc. Vinaigrette dressing with herbsd. Iron Oree. Tears2. How would you separate into its different components?a. A mixture of the volatile gases propane, butane, and isopropaneb. A solution of rubbing alcohol made up of isopropyl alcohol and water3. What instrument would you use to determinea. the mass of a head of lettuce?b. whether your refrigerator is cooling water to 10°C?c. the volume of a glass of orange juice?4. Computers are not supposed to be in very warm rooms. The highest temperature tolerated formaximum performance is 308 K. Express this temperature in °C and °F.5. To identify a liquid substance, a student determined its density. Using a graduated cylinder, shemeasured out a 45-ml sample of the substance. She then measured the mass of the sample,finding that it weighed 38.5 g. She knew that the substance had to be either isopropyl alcohol(density 0.785 g/mL) or toluene (density 0.866 g/mL). What are the calculated density and theprobable identity of the substance?

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Answered: 1. Classify each of the following as…

1. Classify each of the following as element, compound, solution or heterogeneous mixture. a. Gold b. Sugar c. Vinaigrette dressing with herbs d. Iron Ore e. Tears

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter16: Solutions

Section: Chapter Questions

Problem 14E

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Concept explainers

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.

Question

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1. Classify each of the following as element, compound, solution or heterogeneous mixture.
a. Gold
b. Sugar
c. Vinaigrette dressing with herbs
d. Iron Ore
e. Tears
2. How would you separate into its different components?
a. A mixture of the volatile gases propane, butane, and isopropane
b. A solution of rubbing alcohol made up of isopropyl alcohol and water
3. What instrument would you use to determine
a. the mass of a head of lettuce?
b. whether your refrigerator is cooling water to 10°C?
c. the volume of a glass of orange juice?
4. Computers are not supposed to be in very warm rooms. The highest temperature tolerated for
maximum performance is 308 K. Express this temperature in °C and °F.
5. To identify a liquid substance, a student determined its density. Using a graduated cylinder, she
measured out a 45-ml sample of the substance. She then measured the mass of the sample,
finding that it weighed 38.5 g. She knew that the substance had to be either isopropyl alcohol
(density 0.785 g/mL) or toluene (density 0.866 g/mL). What are the calculated density and the
probable identity of the substance?

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