Chapter Six
Chapter Seven
Chapter Eight
Chapter Nine
Concepts
100
How many moles of carbon are in 4 mol of dimethylsulfoxide (C2H6SO)?
8 mol C
100
Silicon dioxide powder reacted with solid carbon to yield solid silicon tetracarbide and carbon monoxide. Write and balance the chemical equation.
SiO2 (s) + 6C (s) --> SiC4 (s) + 2CO (g)
100
Lithium oxide reacts with water to produce lithium hydroxide. How many grams of water are needed to react with 15.0 grams of lithium oxide?
9.03 g Li2O
100
The measure between the distance between the maxima of the wave
wavelength
100
When a substance burns in air, what component of air reacts? (Hint: think combustion reactions)
Oxygen
200
How many grams of oxygen are in 65.0 g of C2H2O2?
35.8 g O
200
Identify the precipitate in this reaction: KI(aq)+ PbNO3 (aq) ---> _______
PbI2
200
What mass of CuCO3 can be made from 0.100 mol CuSO4 and 0.150 mol Na2CO3? Hint: CuSO4 (aq) + Na2CO3 (aq) --> CuCO3 (s) + Na2SO4 (aq)
12.3 g CuCO3
200
P orbitals have ____ lobes and are _______ shaped
two, dumbbell
200
Solutions that dissolve to form conductive solutions are called __________
Electrolytes
300
What is the mass percent of aluminum in aluminum sulfate (Al2(SO4)3)?
15.77% Al
300
Which species is oxidized and which is reduced in the following redox reaction: Zn(s)+ CuSO4 (aq) --> ZnSO4 (aq) + Cu(s)
Zinc is oxidized Copper is reduced
300
When you perform a laboratory experiment, the amount of product collected is the _______
actual yield
300
Write the electron configuration for rubidium (Rb)?
[Kr]5s1 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s1
300
Which atom is larger, I or F?
I
400
Given a sample composed of 51.6% O, 38.7% C and 9.7% H. What is the empirical formula of the compound?
CH3O
400
What type of reaction would this be classified as? AB + CD --> AD + CB
Double displacement reaction
400
Suppose a student performs a reaction and obtains 0.875 g of CuCO3 and the theoretical yield is 0.988 g. What is the percent yield?
88.6% yield
400
Atomic size ______ down a column
increases
400
The _______ _________ of an electron is the lowest energy orbital the electron can occupy
ground state
500
An oxide sample that weighs 2.64 g contains 1.91 g Fe. Is the sample hematite (Fe2O3) or magnetite (Fe3O4).
Magnetite 3*55.85 g/mol Fe / 231.55 g/mol Fe3O4= 72.36% 1.91 g Fe / 2.64 g sample= 72.36%
500
An acid base reaction usually yields _____ and _____
salt and water
500
Heat is released in an _________ reaction
exothermic
500
What is the energy required to remove one electron from an atom in a gaseous state?
ionization energy
500
When filling orbitals with equal energy, fill the orbitals with ______ electrons before pairing electrons Hint: think Hund's rule
single
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