EBK INTRO.CHEMISTRY (NASTA EDITION)
9th Edition
ISBN: 9781337678032
Author: ZUMDAHL
Publisher: CENGAGE CO
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Chapter 8.9, Problem 8.11SC
Exercise 8.11 A compound used as an additive for gasoline to help prevent engine knock shows the following percent composition:
7 1.65% Cl
24.27% C
4.07% H
The molar mass is known to be 98.96 g. Determine the empirical formula and the molecular formula for this compound.
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Practice Example
A compound has the following composition: 26.58% K,
35.35% Cr, and 38.07% O. Determine the empirical
formula of the compound.
Compound X has a molar mass of 283.89 g-mol
1
and the following composition:
element
0
phosphorus 43.64%
56.36%
oxygen
mass %
Write the molecular formula of X.
Explanation
Check
X
S
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Compound X has a molar mass of 104.01 g mol
element
nitrogen
fluorine
mass %
26.93%
73.07%
Write the molecular formula of X.
Explanation
Check
00
X
3
and the following composition:
4
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Chapter 8 Solutions
EBK INTRO.CHEMISTRY (NASTA EDITION)
Ch. 8.2 - ercise 8.1 Calculate the mass of a sample that...Ch. 8.2 - Prob. 8.2SCCh. 8.3 - at if you were offered $1 million to count from 1...Ch. 8.3 - at if you discovered Avogadro’s number was not...Ch. 8.3 - ercise 8.3 Chromium (Cr) is a metal that is added...Ch. 8.5 - ercise 8.4 Polyvinyl chloride (called PVC), which...Ch. 8.5 - ercise 8.5 Calculate the molar mass for sodium...Ch. 8.5 - ercise 8.6 The substance Teflon, the slippery...Ch. 8.6 - ercise 8.7 Penicillin, an important antibiotic...Ch. 8.8 - ercise 8.8 In a lab experiment it was observed...
Ch. 8.8 - trong>Exercise 8.9 Sevin, the commercial name for...Ch. 8.8 - e part of the problem-solving strategy for...Ch. 8.8 - ercise 8.10 The most common form of nylon...Ch. 8.9 - Exercise 8.11 A compound used as an additive for...Ch. 8 - n chemistry, what is meant by the term mole? What...Ch. 8 - hat is the difference between the empirical and...Ch. 8 - substance A2B is 60% A by mass. Calculate the...Ch. 8 - ive the formula for calcium phosphate and then...Ch. 8 - ow would you find the number of “chalk molecules”...Ch. 8 - 0.821 -mol sample of a substance composed of...Ch. 8 - ow many molecules of water are there in a 10.0-g...Ch. 8 - hat is the mass (in grams) of one molecule of...Ch. 8 - onsider separate 100.0-g samples of each of the...Ch. 8 - A molecule has a mass of 4.651023 g. Provide two...Ch. 8 - Differentiate between the terms atomic mass and...Ch. 8 - Consider Figure 4.19 in the text. 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