CHEMISTRY 101 IVY TECH FINAL EXAM 2024 NEWEST
ACTUAL EXAM 2 VERSIONS (VERSION A AND B)
COMPLETE 250 QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS) /ALREADY
GRADED A+
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 - 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.
D. Stoichiometry shows the numerical relationship between chemical quantities in a
balanced chemical equation. - ANSWER: 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 - 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
C. 5.92
D. 15.45 - 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 - 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 - ANSWER: C
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 - 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 - 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
Calculate the heat (in kJ) associated with the complete reaction of 18.2 grams of HCl
(aq).
A. -58.9
B. -29.5
C. None of above
D. -236
E. +58.9 - ANSWER: B
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
A. 455
B. Not enough info
C. 7.20
D. 786
E. 331 - ANSWER: E
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
A. Ca3(PO4)2
B. Ca(NO3)2
C. Li3PO4
D. LiNO3 - ANSWER: B
How many moles of water are needed to react with 2.2 moles of Li2O?
Given: Li2O + H2O ⟶ 2 LiOH
A. None of the above
B. 1.1
ACTUAL EXAM 2 VERSIONS (VERSION A AND B)
COMPLETE 250 QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS) /ALREADY
GRADED A+
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 - 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.
D. Stoichiometry shows the numerical relationship between chemical quantities in a
balanced chemical equation. - ANSWER: 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 - 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
C. 5.92
D. 15.45 - 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 - 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 - ANSWER: C
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 - 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 - 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
Calculate the heat (in kJ) associated with the complete reaction of 18.2 grams of HCl
(aq).
A. -58.9
B. -29.5
C. None of above
D. -236
E. +58.9 - ANSWER: B
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
A. 455
B. Not enough info
C. 7.20
D. 786
E. 331 - ANSWER: E
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
A. Ca3(PO4)2
B. Ca(NO3)2
C. Li3PO4
D. LiNO3 - ANSWER: B
How many moles of water are needed to react with 2.2 moles of Li2O?
Given: Li2O + H2O ⟶ 2 LiOH
A. None of the above
B. 1.1
