8/12/25, 8:15
PM
BYU ONLINE: CHEMISTRY 043: SPEEDBACK
LESSON 10: CUMULATIVE REVIEW EXAM ACTUAL
QUESTIONS AND DETAILED CORRECT VALID
ANSWERS LATEST RELEASE 2025/2026
Terms in this set (48)
After balancing the redox 2, 3, 3, 2
equation FeCl3 +
Zn → ZnCl2 + Fe, what are
the coefficients,
in order from left to right?
(FINALLY FINISHED!! putting in answers - REMEMBER
TO COMPLETE)
2, 3, 3, 2
2, 2, 1, 2
1, 1, 1, 1
4, 3, 3, 4
What is the correct [A4D][C3B2]/[A2B]^2[CD]^3
equilibrium constant
expression for the
equation 2A2B + 3CD ⇄
A4D + C3B2?
1/
22
,8/12/25, 8:15
PM
6[A2B][CD]/[A4D]
[C3B2]
[A2B]^2[CD]^3/[A4D]
[C3B2]
[A4D][C3B2]/6[A2B]
[CD]
[A4D][C3B2]/
[A2B]^2[CD]^3
How many moles of air 5.09 x 10^-3 mol
are there in a 125 mL
flask if the pressure is
739 torr and the
temperature is 18°C?
5.09 mol
197 mol
5.09 x 10^-3 mol
8.22 x 10^-2 mol
Which of the following is It is not balanced for number of atoms or charge.
true about the redox
equation?
MnO4^- + 4CO2 + 4H^+
--> 4CO^3+ + Mn^2+ +
4H2O
It is not balanced for
number of atoms or
2/
22
, 8/12/25, 8:15
PM
charge.
It is correctly balanced
for charge but not for
number of atoms.
It is correctly balanced
for number of atoms
but not for charge.
It is correctly balanced.
Raising the temperature increases the average kinetic energy of the molecules
of reactants in a system
does which of the
following?
decreases the rate of
collision of molecules
has no effect on the
average kinetic energy
of molecules
decreases the average
kinetic energy of the
molecules
increases the average
kinetic energy of the
molecules
What is the atomic an electron
particle that has a mass
of 0 amu and a (if you can't figure this one out, I suggest you
charge of -1? quit the class and get your money back)
3/
22
PM
BYU ONLINE: CHEMISTRY 043: SPEEDBACK
LESSON 10: CUMULATIVE REVIEW EXAM ACTUAL
QUESTIONS AND DETAILED CORRECT VALID
ANSWERS LATEST RELEASE 2025/2026
Terms in this set (48)
After balancing the redox 2, 3, 3, 2
equation FeCl3 +
Zn → ZnCl2 + Fe, what are
the coefficients,
in order from left to right?
(FINALLY FINISHED!! putting in answers - REMEMBER
TO COMPLETE)
2, 3, 3, 2
2, 2, 1, 2
1, 1, 1, 1
4, 3, 3, 4
What is the correct [A4D][C3B2]/[A2B]^2[CD]^3
equilibrium constant
expression for the
equation 2A2B + 3CD ⇄
A4D + C3B2?
1/
22
,8/12/25, 8:15
PM
6[A2B][CD]/[A4D]
[C3B2]
[A2B]^2[CD]^3/[A4D]
[C3B2]
[A4D][C3B2]/6[A2B]
[CD]
[A4D][C3B2]/
[A2B]^2[CD]^3
How many moles of air 5.09 x 10^-3 mol
are there in a 125 mL
flask if the pressure is
739 torr and the
temperature is 18°C?
5.09 mol
197 mol
5.09 x 10^-3 mol
8.22 x 10^-2 mol
Which of the following is It is not balanced for number of atoms or charge.
true about the redox
equation?
MnO4^- + 4CO2 + 4H^+
--> 4CO^3+ + Mn^2+ +
4H2O
It is not balanced for
number of atoms or
2/
22
, 8/12/25, 8:15
PM
charge.
It is correctly balanced
for charge but not for
number of atoms.
It is correctly balanced
for number of atoms
but not for charge.
It is correctly balanced.
Raising the temperature increases the average kinetic energy of the molecules
of reactants in a system
does which of the
following?
decreases the rate of
collision of molecules
has no effect on the
average kinetic energy
of molecules
decreases the average
kinetic energy of the
molecules
increases the average
kinetic energy of the
molecules
What is the atomic an electron
particle that has a mass
of 0 amu and a (if you can't figure this one out, I suggest you
charge of -1? quit the class and get your money back)
3/
22
