Download - Chapter 11 / Midterm Review
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Chapter 11 / Midterm ReviewHonors Chemistry
Ms. Snarrenberg 2013
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Question Types
Orbital Shapes
Orbital Diagram
Electron Configuration
Noble Gas Configuration
Q = -Q (Tf and non-Tf)
Light equation problems x 3
Endo/Exo practice Enthalpy Valence / Unpaired electrons
Stoichiometry: Limiting Reactant Problem, % Yield
Absorption / Emission Drawing
E/λ/ν relationship
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Orbital Shapes
Draw the shapes of the s, p and d orbitals
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Orbital Diagram
Draw the orbital diagram for copper.
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Electron Configuration
Give the long-hand electron configuration and the Noble Gas configuration for strontium.
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Energy/λ/ν
As energy increases, wavelength ______________ and frequency ______________.
The symbol for wavelength is _____ and the symbol for frequency is _____.
Which has a higher frequency: ultraviolet light or radiowaves?
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Stoichiometry
If 5.00 g of calcium carbide and 5.00 grams of water are reacted in the equation below, how much of the excess reactant will remain after the limiting reactant has been consumed?
CaC2 + H2O Ca(OH)2 + C2H2
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Answer
CaC2 is the limiting reactant
2.18 g H2O will remain
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Light Equations
What are the two light equations and the combined light equation? Give the numerical values for the constants in these equations.
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Light Equations
What is the frequency of a photon with a wavelength of 620 nm?
c = λνE = hνc = 2.998 x 108 m/sh = 6.6262 x 10-34 Js
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Answer
620 nm = 6.2 x 10-7 m
ν = 4.18 x 1014 Hz
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Light Equations
What is the energy of a photon with a wavelength of 3.7 x 10-8 m?
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Answer
E = 5.4 x 10-18 J
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Absorption / Emission
Draw a Bohr model diagram of an atom for the absorption of energy and the emission of energy in the form of light.
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Valence / Unpaired
How many valence electrons and unpaired electrons does tin (Sn) have?
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Answer
4 valence electrons
2 unpaired electrons
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Calorimetry
A 15.0 g sample of nickel is heated in a burner flame. It is dropped into a 200.0 g sample of water. The water rose from 26 ºC to 29 ºC. What was the temperature of the metal before it was placed in the calorimeter? (sNi = 0.440 J/g°C)
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Answer
Ti = 400°C
***Bonus*** What does specific heat mean?
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Stoichiometry
When a student heated 1.25 g of mercuric oxide in the lab, the student obtained 1.09 g of mercury. What is the percent yield of this student’s experiment? (Hint: what should the theoretical yield have been?)
2HgO 2Hg + O2
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Answer
Theoretical yield: 1.16 g
% Yield: 94.0%
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Enthalpy