Chemistry 101
Chemistry 101 Final Exam Ivy Tech Study Questions with
Detailed Solutions Graded A+ 2026 Updated
1
Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The
balanced chemical equation is: O2 + Mg ⟶ 2 MgO If 4 moles of magnesium totally reacted
with more than enough O2, how many moles of MgO would be expected to form?
4 Moles
2
Which of the following is TRUE?
Stoichiometry allows prediction of how much of the reactants are necessary to form a given
amount of product. Stoichiometry allows prediction of the amount of products that form in
a chemical reaction based on the amounts of reactants. Stoichiometry shows the numerical
relationship between chemical quantities in a balanced chemical equation. ALL ARE
TRUE
3
Diatomic N2 can react with diatomic H2 to form ammonia (NH3). The balanced chemical
equation is: N2 + 3 H2 ⟶ 2 NH3 If 6 moles of H2 totally reacted with more than enough
N2, how many moles of ammonia would be expected to form?
4 Moles
4
How many grams of the excess reactant remain assuming the reaction goes to completion
and that you start with 15.5 g of Na2S and 12.1 g of CuSO4? Reaction: Na2S+ CuSO4 ⟶
Na2SO4 + CuS
9.58
5
Calculate the maximum number of grams of NH3 that can be produced by the reaction of
2.00 g of N2 with 3.00 g of H2. Reaction: N2 (g) + 3H2 (g) ⟶ 2 NH3 (g)
2.43
6
Which is the limiting reactant in the following reaction given that you start with 42.0 g of
CO2 and 99.9 g KOH? Reaction: CO2+ 2 KOH ⟶ K2CO3 + H2O
KOH
7
How many moles of lithium nitrate are theoretically produced if we start with 3.4 moles of
Ca(NO3)2 and 2.4 moles of Li3PO4? Reaction: 3 Ca(NO3)2 + ⟶ 6LiNO3 + Ca3(PO4)2
6.8
Chemistry 101
,Chemistry 101
8
Hydrochloric acid reacts with barium hydroxide according to the equation: 2 HCl (aq) +
Ba(OH)2 (aq) ⟶ BaCl2 (aq) + 2 H2O ( l) Δ H= -118 kK Calculate the heat (in kJ)
associated with the complete reaction of 18.2 grams of HCl (aq).
-29.5
9
Consider the following reaction: 2 Mg + O2 ⟶ 2 MgO Δ Hrxn = -1203 kJ. Calculate the
amount of heat (in kJ) associated with complete reaction of 4 moles of Mg.
-2406 kJ
10
How many grams of NO2 are theoretically produced if we start with 1.2 moles of S and
9.90 moles of HNO3? Reaction: S + 6HNO3 ⟶ H2SO4+ 6 NO3+ 2 H2O
331
11
What is the limiting reactant for the following reaction given we have 3.4 moles of
Ca(NO3)2 and 2.4 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 ⟶ 6LiNO3 +
Ca3(PO4)2
Ca(NO3)2
12
How many moles of water are needed to react with 2.2 moles of Li2O? Given: Li2O + H2O
⟶ 2 LiOH
2.2
13
How many moles of chlorine gas are needed to make 0.6 moles of sodium chloride? Given
the reaction: 2 Na + Cl2 ⟶ 2NaCl
0.3
14
How many moles of NH3 can be produced by the reaction of 2.00 g of N2 with 3.00 g H2?
Reaction: N2 (g) + 3 H2 (g) ⟶ 2 NH3 (g)
0.143
15
The reaction of one mole of nitrogen gas with three moles of hydrogen gas releases 92 kJ of
thermal energy to the surroundings. Which of the following is TRUE?
This reaction is exothermic, This reaction has a negative enthalpy of reaction, Complete
reaction of two moles of nitrogen gas would release 184 kJ of thermal energy in this
reaction. *All of the above are true
16
Chemistry 101
, Chemistry 101
If the theoretical yield of a reactant is 144 grams and the actual yield of the reaction is 72
grams, the percent yield of the reaction is 200%.
False
17
Given the following generic equation, 2A +3B ⟶ A2B3 Δ Hrxn = +444 kJ, if you
completely reacted 1 mole of compound A, the amount of heat absorbed would be 222 kJ.
True
18
The limiting reactant is not necessarily the reactant with the least mass.
True
19
Since heat must be supplied to melt ice, the melting of ice is an endothermic process and so
has a positive enthalpy value.
True
20
Given the recipe: 2 cups flour + 1 egg + 3 oz blueberries ⟶ 4 muffins. If you have 9 cups of
flour, 4 eggs, and plenty of blueberries, the theoretical yield of muffins is 16
True
21
Which element is represented by the electron configuration 1s22s22p2?
C
22
If the electron configuration of a ground state sodium atom is 1s22s22p63s1, the electron
configuration of the sodium cation (Na+) would be:
1s2 2s2 2p2
23
An accepted abbreviation format is to write an electron configuration that includes a noble
gas symbol in brackets. If you were writing an electron configuration for a bromine atom,
which elemental symbol would you place in the bracket?
Ar
24
What is the electron configuration for Kr?
1s22s22p63s23p64s23d104p6
25
Chlorine and bromine have very similar chemical properties. This is best explained by the
fact that both elements:
Have the same number of valence electrons
Chemistry 101
Chemistry 101 Final Exam Ivy Tech Study Questions with
Detailed Solutions Graded A+ 2026 Updated
1
Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The
balanced chemical equation is: O2 + Mg ⟶ 2 MgO If 4 moles of magnesium totally reacted
with more than enough O2, how many moles of MgO would be expected to form?
4 Moles
2
Which of the following is TRUE?
Stoichiometry allows prediction of how much of the reactants are necessary to form a given
amount of product. Stoichiometry allows prediction of the amount of products that form in
a chemical reaction based on the amounts of reactants. Stoichiometry shows the numerical
relationship between chemical quantities in a balanced chemical equation. ALL ARE
TRUE
3
Diatomic N2 can react with diatomic H2 to form ammonia (NH3). The balanced chemical
equation is: N2 + 3 H2 ⟶ 2 NH3 If 6 moles of H2 totally reacted with more than enough
N2, how many moles of ammonia would be expected to form?
4 Moles
4
How many grams of the excess reactant remain assuming the reaction goes to completion
and that you start with 15.5 g of Na2S and 12.1 g of CuSO4? Reaction: Na2S+ CuSO4 ⟶
Na2SO4 + CuS
9.58
5
Calculate the maximum number of grams of NH3 that can be produced by the reaction of
2.00 g of N2 with 3.00 g of H2. Reaction: N2 (g) + 3H2 (g) ⟶ 2 NH3 (g)
2.43
6
Which is the limiting reactant in the following reaction given that you start with 42.0 g of
CO2 and 99.9 g KOH? Reaction: CO2+ 2 KOH ⟶ K2CO3 + H2O
KOH
7
How many moles of lithium nitrate are theoretically produced if we start with 3.4 moles of
Ca(NO3)2 and 2.4 moles of Li3PO4? Reaction: 3 Ca(NO3)2 + ⟶ 6LiNO3 + Ca3(PO4)2
6.8
Chemistry 101
,Chemistry 101
8
Hydrochloric acid reacts with barium hydroxide according to the equation: 2 HCl (aq) +
Ba(OH)2 (aq) ⟶ BaCl2 (aq) + 2 H2O ( l) Δ H= -118 kK Calculate the heat (in kJ)
associated with the complete reaction of 18.2 grams of HCl (aq).
-29.5
9
Consider the following reaction: 2 Mg + O2 ⟶ 2 MgO Δ Hrxn = -1203 kJ. Calculate the
amount of heat (in kJ) associated with complete reaction of 4 moles of Mg.
-2406 kJ
10
How many grams of NO2 are theoretically produced if we start with 1.2 moles of S and
9.90 moles of HNO3? Reaction: S + 6HNO3 ⟶ H2SO4+ 6 NO3+ 2 H2O
331
11
What is the limiting reactant for the following reaction given we have 3.4 moles of
Ca(NO3)2 and 2.4 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 ⟶ 6LiNO3 +
Ca3(PO4)2
Ca(NO3)2
12
How many moles of water are needed to react with 2.2 moles of Li2O? Given: Li2O + H2O
⟶ 2 LiOH
2.2
13
How many moles of chlorine gas are needed to make 0.6 moles of sodium chloride? Given
the reaction: 2 Na + Cl2 ⟶ 2NaCl
0.3
14
How many moles of NH3 can be produced by the reaction of 2.00 g of N2 with 3.00 g H2?
Reaction: N2 (g) + 3 H2 (g) ⟶ 2 NH3 (g)
0.143
15
The reaction of one mole of nitrogen gas with three moles of hydrogen gas releases 92 kJ of
thermal energy to the surroundings. Which of the following is TRUE?
This reaction is exothermic, This reaction has a negative enthalpy of reaction, Complete
reaction of two moles of nitrogen gas would release 184 kJ of thermal energy in this
reaction. *All of the above are true
16
Chemistry 101
, Chemistry 101
If the theoretical yield of a reactant is 144 grams and the actual yield of the reaction is 72
grams, the percent yield of the reaction is 200%.
False
17
Given the following generic equation, 2A +3B ⟶ A2B3 Δ Hrxn = +444 kJ, if you
completely reacted 1 mole of compound A, the amount of heat absorbed would be 222 kJ.
True
18
The limiting reactant is not necessarily the reactant with the least mass.
True
19
Since heat must be supplied to melt ice, the melting of ice is an endothermic process and so
has a positive enthalpy value.
True
20
Given the recipe: 2 cups flour + 1 egg + 3 oz blueberries ⟶ 4 muffins. If you have 9 cups of
flour, 4 eggs, and plenty of blueberries, the theoretical yield of muffins is 16
True
21
Which element is represented by the electron configuration 1s22s22p2?
C
22
If the electron configuration of a ground state sodium atom is 1s22s22p63s1, the electron
configuration of the sodium cation (Na+) would be:
1s2 2s2 2p2
23
An accepted abbreviation format is to write an electron configuration that includes a noble
gas symbol in brackets. If you were writing an electron configuration for a bromine atom,
which elemental symbol would you place in the bracket?
Ar
24
What is the electron configuration for Kr?
1s22s22p63s23p64s23d104p6
25
Chlorine and bromine have very similar chemical properties. This is best explained by the
fact that both elements:
Have the same number of valence electrons
Chemistry 101
