WorksheetsFinal Review
Total questions: 30
Worksheet time: 58mins
The molar volume of a gas at STP occupies _____________.
22.4 L
0˚C
1 kiloPascal
12 grams
If 2.00 L of a gas in a container at room temperature exerts a pressure of 4.00 atm. If the pressure doubles and the temperature remains the same, the volume would become ________.
16.0 L
2.00 L
4.00 L
1.00 L
If 7.00 grams of nitrogen gas are contained in a 5.00 L flask at 4.62 kPa. What is the temperature of the gas?
5.56K
11.1 K
4.12 K
9.07 K
Chemical equations must be balanced to satisfy ____.
The law of definite proportions
The law of multiple proportions
The law of conservation of mass
Avogadro's principle
How many moles of aluminum are needed to react completely with 1.2 mol of FeO?
2Al(s) + 3FeO(s) → 3Fe(s) + Al2O3(s)
1.2 mol
0.8 mol
1.6 mol
2.4 mol
Which particles are responsible for creating chemical bonds between atoms?
Neutrons
Protons
Electrons
After distilling a sample, you find that you have two distinct components. What can be said about the original sample?
it is a compound
it is an element
it is a pure substance
it is a mixture
5.) Which of the following is the correct name for the following compound?
BrF5
Bromine Pentafluoride
Carbon Monoxide
Sulfur Trioxide
Disulfur Difluoride
What is the molar mass of table salt (NaCl)
Appoximately 58 g
It can not be calculated with the information given.
3.141597238
Approximately 7 g
When sodium bonds with chlorine, what happens?
Sodium and chlorine share electrons
Sodium donates its outter valence electron to chlorine so they both have full outter shells.
Chlorine gives its 7 electrons to sodium
Sodium and chlorine cannot react under normal conditions.
What's the mol ratio of CO2 to O2 according to the following chemical equation?
2C7H6O2(s) + 15O2(g) → 14CO2(g) + 6H2O(l)
14 mol CO2 to 15 mol O2
15 mol CO2 to 14 mol CO2
14 mol CO2 to 2 mol O2
15 mol CO2 to 6 mol O2
How many formula units are in 12.88 moles of sodium chloride (NaCl)?
7.754 x 1024
3.890 x 1025
6.291 x 1023
5.477 x 1024
Predict the products of the following neutralization reaction. If the reaction would not happen, then select No reaction.
HBr (aq) + NaOH(aq) → ?
NaBr(aq) + H2O(l)
HNa(aq) + BrOH(aq)
No Reaction
You are given 40.05g S and 59.95g O. Find the empirical formula for these elements.
SO
SO2
SO3
SO4
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
Mg4N3
MgN2
Mg3N2
MgN
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
CH2O
C2H4O2
C4H8O4
C6H12O6
What type of reaction is the following reaction?
2Sr+O2 → SrO
Combination
Decomposition
Combustion
Single-Replacement
What type of reaction is the following reaction?
2Al2O3→4Al+3O2
Combination
Decomposition
Combustion
Double-Replacement
How many Hydrogen atoms do I have in the following compound?
2(NH4)3PO4
4
12
9
24
What number do I need to balance the following chemical equation?
2Al+6HCl→3H2+ _ AlCl3
1
2
4
6
What product(s) do you think could form if the reactants are
NaBr + Cl2 → ???
ClBr and Na
NaCl and Br2
NaCl2 and Br
Na2Br2
In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?
Both of the solution are bases
Both of the solution are acids
The Baking soda is an acid and the Bleach is a base
The baking soda is a base and the Bleach is an acid.
Water has a neutral because
it has more H+ ions than OH-
it has more OH- ions than H+
it does not produce any ions
it has an equal amount of H+ and OH- in solution
As one moves down the pH scale from 14 to 1, what happens to the concentration of H+ in the solution?
concentration of H+ decreases
concentration of H+ increases
concentration of H+ stays the same
If pure water is added to an acid with a pH of 3, what happens to the pH of the solution?
the pH increases to above 3
the pH decreases to below 3
the pH stays the same at 3
