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.
The topics with the most errors should be reviewed.
Do not use a calculator when answering these questions.
When the following reaction is balanced, what is the coefficients for H2O?
The rate is triple.
H2O(A) 337 g(B) 147 g(C) 191 g(D) 45 g Iron(III) hydroxide has Ksp of 1.6 x 10-39.
The end point is reached when the sulfuric acid is added.
The heat of olive oil is 2%.
The equilibrium constant is 3.0 x 1022.
A 2.0 liter flask has enough SO3 added to it to produce a pressure of 0.789 atm.
The melting point of straight- is 1.32 x 10-5 torr.
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.
The electrons must be of different spins when they become pairs.
The symbol is one up and one down arrow.
They are bromine and mercury.
Mercury and bromine are nonmetal liquids.
Electricity is not conducted by nonmetals.
A nonspontaneous system has more reactants than products.
The large exothermic heat of reaction and the large increase in entropy are not likely with a large positive free energy.
To the right of the equal sign, replace the mass of metal in the numerator with the volume of H2 in mL.
We already know the final numerator's value, so we just need to convert the denominator into moles.
The mole ratio relates H2 and HCl to the second conversion factor.
To have the lowest total energy, an atom must have its electrons in their lowest possible levels.
The response in (C) may indicate a favorable process, but it is not the only thing needed for a thermodynamically favored reaction.
For a favorable reaction, only response A is true.
Each has one oxygen drawn with a double bond to the sulfur and the other two oxygens drawn with a single bond to the sulfur.
There is only one Lewis structure for the remaining compounds.
Americium is the only one of its kind.
The rate of appearance of a product may be referred to as the disappearance of a reactant.
There are still attractive forces that may be significant.
The spectator ion that cancel are the ammonium and nitrate ion.
Silver ion will form a complex with ammonia, NH3.
The number of moles is determined by taking the inverse of the atomic mass.
The lowest mass contains the most moles.
The acidic solution is produced by sulfur dioxide dissolving in water.
The limit reactant is CH3COOH.
The contribution of OH- from water cannot be ignored since pure water has an OH- concentration of 1.0 x 10-7 M. This is a common-ion calculation with 1.0 x 10-7 M. The oxidation number for each chromium in the dichromate ion is +6.
There is a decrease in oxidation number due to the fact that the Cr3+ is only +3 The O-H bond has an electronegativity difference of 1.4 and is the most polar.
CuCO3 is the carbonate that forms when they are mixed.
London forces are present, but each compound is roughly the same length, and these forces will be similar for all four molecules.
A calcium atom may or may not have 20 neutrons.
The mass in the periodic table is not the mass of a calcium atom.
The theoretical yield is usually expressed in units of grams of product.
The mass of both reactants is given as a limiting-reactant problem.
Assuming that Fe2O3 is the excess reactant, we will calculate the mass of iron that can be made from 2.00 g C. Assuming carbon is the excess reactant, we will calculate the mass of iron that we can prepare from 26.0 g Fe2O3 12.4 g of iron is the theoretical yield, and carbon is the limiting reactant.
We can use our knowledge of attractive forces to see that a solution is not favorable.
The only salt produced from a weak acid is Na2S, and the sulfide ion hydrolyzes water.
It is possible to convert it to the molarity of Al(OH)3.
The temperature of the water doesn't have to be very cold.
The ideal gas law does not require a barometric pressure of 760 torr, but it must be measured when the experiment is performed.
The flammability of the gas won't have a significant effect on the tap water.
x atm of O2 and x atm of SO2 will form if the initial SO3 is destroyed.
The equilibrium constant is large so we use an approximation of 0.789 - 2x.
We needed to use units of atmospheres to solve the problem.
Each molecule has more of the same forces attracting it to its neighbors.
The force of the instantaneous dipoles can be strong with long non-polar carbon chains.
If 100 g of sample is used, the percentages are converted to grams.
The formula is empirical.
The molecule in (C) and (D) can't hydrogen bond to other molecule because they don't have the H-F bond.
There is no molecule below the molecule in D that can hydrogen bond to the molecule in C. The molecule in C cannot hydrogen bond to the molecule in D, but it can hydrogen bond to the molecule in B.
If a chemical reaction has the same number of moles of gas as reactants and products, then Kp will be equal to Kc.
Appropriate steps must be provided for the slow step.
The online practice tests can be found on the inside front cover of the book.