Chemistry 101 Final Ivy Tech questions with \| \| \| \| \| \| \|
answers
Diatomic O2 can react with the element magnesium to form
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magnesium oxide (MgO). The balanced chemical equation is:\| \| \| \| \| \| \|
O2 + Mg ⟶ 2 MgO
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If 4 moles of magnesium totally reacted with more than enough
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O2, how many moles of MgO would be expected to form?
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A. 8 Moles
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B. 2 Moles
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C. 4 Moles
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D. 1 Mole
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E. Not Enough Info - CORRECT ANSWERS ✔✔C
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Which of the following is TRUE? \| \| \| \| \|
A. Stoichiometry allows prediction of how much of the reactants
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are necessary to form a given amount of product.
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B. All of the above are true.
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,C. Stoichiometry allows prediction of the amount of products
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that form in a chemical reaction based on the amounts of
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reactants. \|
D. Stoichiometry shows the numerical relationship between
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chemical quantities in a balanced chemical equation. - CORRECT
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ANSWERS ✔✔B \|
Diatomic N2 can react with diatomic H2 to form ammonia (NH3).
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The balanced chemical equation is:
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N2 + 3 H2 ⟶ 2 NH3
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If 6 moles of H2 totally reacted with more than enough N2, how
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many moles of ammonia would be expected to form?
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A. 4 Moles
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B. 6 Moles
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C. 3 Moles
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D. 2 Moles
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E. Not enough info - CORRECT ANSWERS ✔✔A
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How many grams of the excess reactant remain assuming the
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reaction goes to completion and that you start with 15.5 g of
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Na2S and 12.1 g of CuSO4? \| \| \| \| \| \|
, Reaction: Na2S+ CuSO4 ⟶ Na2SO4 + CuS
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A. 0.05
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B. 9.58
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C. 5.92
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D. 15.45 - CORRECT ANSWERS ✔✔B
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Calculate the maximum number of grams of NH3 that can be
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produced by the reaction of 2.00 g of N2 with 3.00 g of H2.
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Reaction: N2 (g) + 3H2 (g) ⟶ 2 NH3 (g)
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A. 2.43
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B. 0.964
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C. None of the above
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D. 4.00
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E. 17.0 - CORRECT ANSWERS ✔✔A
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Which is the limiting reactant in the following reaction given that
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you start with 42.0 g of CO2 and 99.9 g KOH?
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Reaction: CO2+ 2 KOH ⟶ K2CO3 + H2O\| \| \| \| \| \| \|
A. CO2
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B. Not enough information
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answers
Diatomic O2 can react with the element magnesium to form
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magnesium oxide (MgO). The balanced chemical equation is:\| \| \| \| \| \| \|
O2 + Mg ⟶ 2 MgO
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If 4 moles of magnesium totally reacted with more than enough
\| \| \| \| \| \| \| \| \| \| \|
O2, how many moles of MgO would be expected to form?
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A. 8 Moles
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B. 2 Moles
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C. 4 Moles
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D. 1 Mole
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E. Not Enough Info - CORRECT ANSWERS ✔✔C
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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. - CORRECT
\| \| \| \| \| \| \| \| \|
ANSWERS ✔✔B \|
Diatomic N2 can react with diatomic H2 to form ammonia (NH3).
\| \| \| \| \| \| \| \| \| \| \|
The balanced chemical equation is:
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N2 + 3 H2 ⟶ 2 NH3
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If 6 moles of H2 totally reacted with more than enough N2, how
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many moles of ammonia would be expected to form?
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A. 4 Moles
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B. 6 Moles
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C. 3 Moles
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D. 2 Moles
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E. Not enough info - CORRECT ANSWERS ✔✔A
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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 - CORRECT ANSWERS ✔✔B
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Calculate the maximum number of grams of NH3 that can be
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produced by the reaction of 2.00 g of N2 with 3.00 g of H2.
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Reaction: N2 (g) + 3H2 (g) ⟶ 2 NH3 (g)
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A. 2.43
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B. 0.964
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C. None of the above
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D. 4.00
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E. 17.0 - CORRECT ANSWERS ✔✔A
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Which is the limiting reactant in the following reaction given that
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you start with 42.0 g of CO2 and 99.9 g KOH?
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Reaction: CO2+ 2 KOH ⟶ K2CO3 + H2O\| \| \| \| \| \| \|
A. CO2
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B. Not enough information
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