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Answer to Question #52302 in Other Chemistry for Andres

Question #52302
(116)Characterize these compounds as electrolytes or nonelectrolytes. (Chapter 15)
a. NaCl
b. CuSO4
c. CCl4
d. H2O
(117)Calculate the boiling-point elevation for these aqueous solutions. (Chapter 16)
a. 0.507m NaCl
b. 0.204m NH4Cl
c. 0.155m CaCl2
d. 0.222m NaHSO4
(118)How much heat (in kJ) is released or absorbed when 0.265 mol of sodium bicarbonate is decomposed according to the following reaction? (Chapter 17)
2NaHCO3(s) → Na2CO3(s) + H2O(g) + CO2(g)
ΔH = 129 kJ
(119)Explain why the needles on a dried out fir tree can burn with almost explosive rapidity. (Chapter 17)
(120)What must be true at the end point of an acid-base titration? (Chapter 19)
(121)Calculate the pH of each of the following solutions. (Chapter 19)
a. [H+] = 7.0 × 10−5MHint
b. [OH−] = 1.8 × 10−9MHint
c. [OH−] = 6.1 × 10−2MHint
d. [H+] = 4.4 × 10−11MHint
(122)Identify the oxidizing agent in each reaction. (Chapter 20)
a. xenon + fluorine → xenon tetrafluoride
b. sulfur + oxygen → sulfur trioxide
c. gaseous chlorine + aqueous sodium bromide → aqueous bromine + aqueous sodium chloride
(123)At which electrode in a voltaic cell does oxidation always occur? What is the charge on this electrode? (Chapter 21)
(124)What would you observe when a length of nickel wire is immersed in an aqueous solution of silver nitrate? (Chapter 21)
(125)For each pair of metals shown below, decide which metal is more readily reduced. (Chapter 21)
a. Cu, Mg
b. Cd, Ni
c. Ag, Sn
d. Zn, Fe
e. Ni, Cd
f. Al, Cu
(126)Write a molecular structure for each compound. (Chapter 22)
a. heptaneHint
b. 2-methyl-3-hexeneHint
c. 2-phenylbutaneHint
d. 1,3-diethylbenzeneHint
(127)Give the IUPAC name for these compounds. (Chapter 22)
(128)Name the next highest homolog of each of these compounds. (Chapter 22)
a. 1-butene
b. cyclooctane
c. pentane
d. nonane
(129)Name the four structural isomers of C4H9Cl. (Chapter 23)
(130)Write a molecular formula for each compound. (Chapter 23)
a. methyl acetateHint
b. butanalHint
c. 2-hydroxypropanoic acidHint
d. 2-butanoneHint
(131)Name each polymer and state at least one of its uses. (Chapter 23)
(132)Capsaicin, shown below, is the major contributor to the heat of chili peppers. Circle and name the functional groups in capsaicin. (Chapter 23)

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