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# Classify each substance as a pure substance or a mixture. ISBN: 9780321809247 1

## Solution for problem 37E Chapter 1

Chemistry: A Molecular Approach | 3rd Edition

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Problem 37E

Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous.

a.        sweat

b.        carbon dioxide

c.        aluminum

d.        vegetable soup

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Solution 37E: All digits of a measurement including uncertain number are called significant figures. Significant figures = all certain digits + one uncertain digit The rules for determining the significant figures are (i) Zeros between nonzero digits are always significant (ii) Zeros at the beginning of a number are never significant. (iiI) Zeros at the end of a number are significant if the number has a decimal point (a) 601 kg, There are three significant figures. This is because , zero is between the non zero digits. So zero is also a significant figures along with non zero digits. (b) 0.054 s Here significant figures are two. This is because, zero in the beginning is not significant. So it is counted only two non zero digits as the significant figures. (c) 6.3050 cm Here significant...

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##### ISBN: 9780321809247

This textbook survival guide was created for the textbook: Chemistry: A Molecular Approach, edition: 3. The full step-by-step solution to problem: 37E from chapter: 1 was answered by , our top Chemistry solution expert on 02/22/17, 04:35PM. Since the solution to 37E from 1 chapter was answered, more than 403 students have viewed the full step-by-step answer. The answer to “Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous.a. sweatb. carbon dioxidec. aluminumd. vegetable soup” is broken down into a number of easy to follow steps, and 41 words. This full solution covers the following key subjects: figures, measured, measurement, quantities, section. This expansive textbook survival guide covers 82 chapters, and 9454 solutions. Chemistry: A Molecular Approach was written by and is associated to the ISBN: 9780321809247.

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