Chemistry 101 Final Ivy Tech exam questions with 100- correct answers

Chemistry 101 Final Ivy Tech exam |\ |\ |\ |\ |\ |\




questions with 100% correct answers |\ |\ |\ |\




Diatomic O2 can react with the element magnesium to
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form magnesium oxide (MgO). The balanced chemical
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equation is: |\




O2 + Mg ⟶ 2 MgO
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If 4 moles of magnesium totally reacted with more than
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enough O2, how many moles of MgO would be expected
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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
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reactants are necessary to form a given amount of |\ |\ |\ |\ |\ |\ |\ |\ |\



product. |\




B. All of the above are true.
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C. Stoichiometry allows prediction of the amount of
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products that form in a chemical reaction based on the
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amounts of reactants. |\ |\ |\




D. Stoichiometry shows the numerical relationship
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between chemical quantities in a balanced chemical |\ |\ |\ |\ |\ |\ |\



equation. - CORRECT ANSWERS ✔✔B |\ |\ |\ |\




Diatomic N2 can react with diatomic H2 to form ammonia
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(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
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N2, how many moles of ammonia would be expected to
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form?


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
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the reaction goes to completion and that you start with
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15.5 g of Na2S and 12.1 g of CuSO4?
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Reaction: Na2S+ CuSO4 ⟶ Na2SO4 + CuS |\ |\ |\ |\ |\ |\




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
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be produced by the reaction of 2.00 g of N2 with 3.00 g
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of H2.
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Reaction: N2 (g) + 3H2 (g) ⟶ 2 NH3 (g) |\ |\ |\ |\ |\ |\ |\ |\ |\




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
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given that 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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C. KOH
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D. K2CO3
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E. H2O - CORRECT ANSWERS ✔✔C
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How many moles of lithium nitrate are theoretically
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produced if we start with 3.4 moles of Ca(NO3)2 and 2.4
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moles of Li3PO4? |\ |\




Reaction: 3 Ca(NO3)2 + ⟶ 6LiNO3 + Ca3(PO4)2
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A. 1.1
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