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Chapter 20: Diagnostic Test 2
Answers to the following multiple-choice questions can be found in the directions.
You can use a calculator and the periodic table, but not other information.
Limit your time to 60 minutes.
If you don't finish in 60 minutes, keep going until all the remaining questions are answered.
There are tables at the end of the test to help diagnose your strengths and weaknesses.
Continue with Diagnostic Test 3 after reviewing the topics that have the most errors.
Do not use a calculator when answering these questions.
The atomic mass of 40Ca, 39K, and 41 Sc all have the same number of electrons.
The balanced equation has all the coefficients in it.
Balance the half-reaction for bromine.
The Ka's dimensions are 3.0 x 10-4.
It can be detected on simple radiation counters.
Use the answer key to score your test.
The following tables need to be completed.
You can find your strengths and weaknesses in the first table.
The second table can be used to help you decide which chapters to concentrate on.
The two tables will help you focus on the material that needs the most study.
They can't have the same number of protons since they are different elements.
There is a balanced reaction.
Write two half-reactions:IO3- - I2Cl- - ClO-Balance all atoms except H and O. Na, Ag, and K are not balanced in response.
We need to know how much of the strong acid or the strong base is left after the reaction is complete.
This is a limiting-reactant problem.
All of the KOH is used up and must be the limiting reactant.
1.0 x 10-5 mol of the excess reactant is left over.
The moles left over are divided by the liters of solution to arrive at the molarity of HBr.
The complete neutralization of H3PO4 isH3PO4 + 3KOH - K3PO4 + 3H2O.
The two atoms have the same electron configuration.
The basis of the half-reaction is this.
There is no change in potential energy because the gas is ideal.
The correct response is (D).
The products of this reaction aresoluble.
Insoluble iron(II) sulfite, PbI2, and water will be produced by the others.
The rate law is determined by experimental data.
A reaction that is an elementary step in a mechanism is one of the exceptions.
The responses are part of the Pauli exclusion principle.
There are two conjugate acid-base pairs.
One pair is H2O and the other is H3O+.
The grams of chlorine need to be calculated from the AgCl precipitated.
The reaction subtracts -2.37 from +0.80 to get the correct number.
Boron forms compounds with only six electrons, and the remaining compounds are in period 3 or above, and may use d orbitals to expand the octet on the central atom to more than eight electrons.
All of them have expanded octets.
There is one possible charge for calcium, aluminum, potassium, and ammonium ion.
There is a dichromate ion.
The only thing that can have two oxidation states is copper.
It's from incomplete combustion.
There are many compounds and particles in soot.
The distance from the flame that produced it affects the composition of soot.
Before moving onto the next energy level, the electrons are placed into sublevels.
The transition elements fill the (n + 1)s orbitals.
The low pressure means few molecules in a given volume that increase the distance between them.
High volume does not guarantee low pressure and minimal interactions.
In the form of dry ice, it is classified as a solid.
The initial concentration of HClO is 0.165 mole/.500 L, and therefore the hydrogen ion concentration and ClO.
We will assume that x 0.333 is the equilibrium expression.
The mass can add up to 40 if it has 21 neutrons.
The compound has one less electron than the number of protons, or 18.
The highest and lowest energy radiations are listed.
Their wavelength goes from high to low.
The water reacts with the fluoride ion.
The equilibrium constant is A.
Water is considered a constant that is part of K. The number of oxidations is 2.
There is an oxidation number for each sodium.
All oxidation numbers must be allowed in the un charged formula unit.
There are three Na atoms.
When dissolved in water, P is a strong acid.
It's also a strong electrolyte.
The standard pressure is 760 torr.
Since there are 2 moles of gas on the left and 1 mole of gas on the right, the reaction will be forced to the right to make more product.
Adding argon has no effect on the process, and a catalyst will speed up both the forward and reverse reactions.
Nonmetals have higher electronegativities than metals.
The enthalpy has to be positive.
We can see that the molecule in a solid are much closer together than they are in a liquid.
The change in the entropy must be positive.
C27H46O is a molecule of C27H46O, it is a molecule of C27H46O, it is a molecule of C 27H46O, it is a molecule of C 27H46O, it is a molecule of C 27H46O They are not expected to be aggressive.
All other pairs have the same polarities.
The rate constant will be affected by either an increase or decrease in the temperature or activation energy.
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