Chemistry 101 Final Ivy Tech
questions and verified answers 2026
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?
A. 8 Moles
B. 2 Moles
C. 4 Moles
✅
D. 1 Mole
E. Not Enough Info - correct answer C
Which of the following is TRUE?
A. Stoichiometry allows prediction of how much of the reactants are necessary to
form a given amount of product.
B. All of the above are true.
C. Stoichiometry allows prediction of the amount of products that form in a
chemical reaction based on the amounts of reactants.
,Chemistry 101 Final Ivy Tech
questions and verified answers 2026
a balanced chemical equation. - correct answer✅
D. Stoichiometry shows the numerical relationship between chemical quantities in
B
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?
A. 4 Moles
B. 6 Moles
C. 3 Moles
✅
D. 2 Moles
E. Not enough info - correct answer A
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
A. 0.05
B. 9.58
,Chemistry 101 Final Ivy Tech
questions and verified answers 2026
✅
C. 5.92
D. 15.45 - correct answer B
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)
A. 2.43
B. 0.964
C. None of the above
✅
D. 4.00
E. 17.0 - correct answer A
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
A. CO2
B. Not enough information
C. KOH
✅
D. K2CO3
E. H2O - correct answer C
, Chemistry 101 Final Ivy Tech
questions and verified answers 2026
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
A. 1.1
B. 6.8
C. 1.2
✅
D. Not enough info
E. 7.2 - correct answer B
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.
A. -1203 kJ
B. -601.5 kJ
C. -4812 kJ
✅
D. None of the above
E. -2406 kJ - correct answer E
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
questions and verified answers 2026
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?
A. 8 Moles
B. 2 Moles
C. 4 Moles
✅
D. 1 Mole
E. Not Enough Info - correct answer C
Which of the following is TRUE?
A. Stoichiometry allows prediction of how much of the reactants are necessary to
form a given amount of product.
B. All of the above are true.
C. Stoichiometry allows prediction of the amount of products that form in a
chemical reaction based on the amounts of reactants.
,Chemistry 101 Final Ivy Tech
questions and verified answers 2026
a balanced chemical equation. - correct answer✅
D. Stoichiometry shows the numerical relationship between chemical quantities in
B
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?
A. 4 Moles
B. 6 Moles
C. 3 Moles
✅
D. 2 Moles
E. Not enough info - correct answer A
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
A. 0.05
B. 9.58
,Chemistry 101 Final Ivy Tech
questions and verified answers 2026
✅
C. 5.92
D. 15.45 - correct answer B
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)
A. 2.43
B. 0.964
C. None of the above
✅
D. 4.00
E. 17.0 - correct answer A
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
A. CO2
B. Not enough information
C. KOH
✅
D. K2CO3
E. H2O - correct answer C
, Chemistry 101 Final Ivy Tech
questions and verified answers 2026
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
A. 1.1
B. 6.8
C. 1.2
✅
D. Not enough info
E. 7.2 - correct answer B
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.
A. -1203 kJ
B. -601.5 kJ
C. -4812 kJ
✅
D. None of the above
E. -2406 kJ - correct answer E
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
