This document appears to be a series of questions and answers related to chemistry topics like calculations, organic chemistry, acids and bases, and electrochemistry. There are questions ranging from 5 to 30 points and covering concepts such as molarity, heat capacity, half-life, functional groups, oxidation numbers, and thermochemical reactions. The document provides the questions and then shows the answers upon request.
29. Calculations
Question for 5 Points
You dissolve 0.74 g of
potassium chloride (KCl) in
500 mL of water. What is the
molarity of the solution? Use
a periodic table. Show Answer
33. Calculations
Question for 15 Points
Show Answer
If you have 10 grams of a substance that
decays with a half-life of 14 days, then how
much will you have after 42 days?
37. Calculations
Question for 25 Points
For the reaction of hydrogen gas with
iodine gas to make hydrogen iodide gas,
H2 + I2 2HI, you have the following
concentrations at equilibrium: [H2] =
4.5647 103
M, [I2] = 7.378 104
M, and
[HI] = 1.3544 102
M. What is the
equilibrium constant?
Show Answer
49. Acids & Bases,
Electrochemistry
Question for 5 Points
Show Answer
Of the metals Pb, Mg, Au,
and Na, which will not
spontaneously donate
electrons to copper in
solution?
55. Oxidation Numbers
Question for 20 Points
A solution has a hydrogen
ion (or hydronium ion)
concentration of 3.16
108
M. What is the pH of the
solution? Show Answer
60. Big Points
Question
A correctly written
thermochemical reaction needs
what 4 things?
Show Answer
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61. Big Points
Answer for Big Points
1) Reactants & products
2) Phase symbols (s,l,g)
3) Balanced equations
4) Enthalpy
Back to Board
62. Big Board Facts
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