WorksheetsSemester 2 Final Exam Review
Total questions: 32
Worksheet time: 43mins
Which of the following is
NOT a property of gases?
Gases are compressible
Gases can expand
Gases can spontaneously diffuse
Gases are very dense
Gases have high fluidity
When 45.3 grams of C3H8 reacts with oxygen gas, how many liters of CO2 are produced if the reaction is carried out at 56°C and a pressure of 780 mmHg?
3.1 L
81 L
61 L
0.11 L
If volume and number of moles are constant, the pressure of a gas varies_______________with temperature.
Directly
Inversely
No relationship exist
What is the volume of one mole of gas at STP?
1 liter
12 liters
22.4 liters
It depends on the gas since all gases have different densities
Which of the following is NOT true at STP conditions?
Temperature is at 0°C and pressure is at 1 atm
Temperature is at 273 K and pressure is at 760 mmHg
The volume of 1 mol of He gas is 22.4 L
The volume of 1 mol of Cl2 gas is 12 L
All of the above are true
You have a 2.4 L container of air at 273 K and 1 atm. From out of nowhere, Bigfoot stomps on it, decreasing the container’s volume down to 0.5 L and increasing the pressure to 8 atm. How hot is the air in the container now?
0.035 K
28 K
455K
600 K
None of these
Which of the following has the most molecules?
2.00 L of CH4 at 0oC and 2.00 atm
2.00 L of N2 at 0oC and 1.00 atm
2.00 L of O2 at 20oC and 1.00 atm
2.00 L of CO2 at 50oC and 1.25 atm
2.00 L of CO at 0oC and 1.25 atm
In an experiment, 5 gram samples of Ag, Cu, Au and Al were all heated to 100°C and were then allowed to simultaneously cool for 30 seconds before their temperatures were measured. Which metal will have the lowest temperature?
Ag (c =0.233)
Cu (c=0.385)
Au (c=0.129)
Al (c=0.895)
Can’t tell from the info given
Which of the following will have the greatest specific heat?
Glass
Steel
Styrofoam
It takes 31.2 joules of heat to change the temperature of a sample of silver by 12°C. What is the mass of this silver?
(specific heat of silver = 0.233 J/g°C)
0.090 grams
0.607 grams
11.2 grams
1600 grams
None of the above
A piece of metal is sitting in boiling water. You transfer the
metal to a cup of cold water and assume that no heat is lost to the environment. Use the following data to determine the specific heat capacity of the metal.
Mass of cup 2.0 g
Mass of cup and water 102.0 g
Initial temp. of water 22 oC
Final temp. of water 26 oC
Mass of metal 12.0 g
Temp. of boiling water 100.0 oC
16.7 J/goC
9.07 J/goC
1.88 J/goC
0.717 J/goC
Ice Melting at room temperature is …
An endothermic and spontaneous process
An exothermic and spontaneous process
An endothermic and non-spontaneous process
An exothermic and non-spontaneous process
None of these is correct.
What is enthalpy?
A measure of heat or energy
A measure of randomness and disorder
A measure of how spontaneous a reaction will be
A measure of the number of cows that can jump over the moon
None of these
When the ∆H of a reaction is negative:
The reaction is spontaneous
The reaction is exothermic
The reaction is non-spontaneous
The reaction is endothermic
Calculate the change in enthalpy for
2H2O(g) ---> 2H2(g) + O2(g)
35.6 kJ
268.2 kJ
1343.3 kJ
483.6 kJ
Which of the following is not a characteristic of a base?
slippery
changes color(s) of indicators
conducts electricity
proton donor
79 mL of KOH is added to 23 mL of 0.305 M H2SO4 to neutralize it. What is the molarity of the base?
1.3 M
0.007 M
0.014 M
0.177 M
13.9 M
What is the pH of 0.177 M KOH?
0.752
1.85
13.24
8.9
If HCl is 0.000356 M, what is the pOH?
3.4
10.6
3.1
10.9
If the pH of a solution is 7, it is _________
an acid
a base
both an acid and a base
neither an acid nor a base
If you dissolve 5 g of C12H22011 in 0.5 L, what is the concentration?
10 M
0.2 M
0.03 M
none of these
What doesn’t completely ionize in an aqueous solution?
Conjugate acid
Strong acid
Weak acid
What do you call 2 substances that are related to each other by the donating and accepting of a single proton?
Conjugate acid-base pair
Weak bases
Strong acids
Strong bases
In the reaction NH3 + H2O <--> NH4+ + OH-, the two Bronsted-Lowry acids are…
NH3 and OH-
NH4+ and H2O
OH- and H2O
OH- and NH2-
If you had 35 grams of Aluminum and 34 grams of oxygen gas, which would run out first when they react together?
Aluminum
Oxygen
They run out at the same time
No way to tell
If you actually produced 37.4 grams and had a percent yield of 85.5%, how many grams of product did you plan on producing?
32.0 grams
43.7 grams
33099 grams
other
58.3 grams of water are made from the reaction of hydrogen gas and oxygen gas. How many grams of hydrogen were used?
13.2 grams
4.3 grams
6.5 grams
no way to tell
When determining how much of each product you make in a reaction, which reactant do you use?
the first reactant
the second reactant
the limiting reactant
either
When you balance the following equation, what is the coefficient in front of aluminum?
aluminum + hydrochloric acid ---> aluminum chloride and hydrogen gas
1
2
3
4
other
The products of this reaction would be ....
CaBr2 (aq) + 2KOH (aq) --->
Ca(OH)2 + 2KBr
CaK2 + BrOH
CaOH + KBr2
No reaction
The product(s) of hydrochloric acid reacting with zinc metal would be....
ZnH2 + Cl
ZnCl2 + H2
No reaction
HCl + Zn
CH4 + O2 ---> H2O + CO2 is a __________________ reaction
synthesis
decomposition
combustion
single replacement
double replacement
