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- 1. Multiple ChoiceConsider the reaction of CaCN2 and water to produce CaCO3 and NH3:
CaCN2 + 3H2O → CaCO3 + 2NH3
How much NH3 is produced upon reaction of 160. g of CaCN2 and 4.0. moles of H2O?2.00 moles NH34.00 moles NH32.67 moles NH36.00 moles NH3 - 2. Multiple ChoiceIf 5.0 moles of NaOH are mixed with 5.0 moles of H2SO4 in a neutralization reaction in aqueous solution, the limiting reactant isH2SO4NaOHH2ONa2SO4
- 3. Multiple ChoiceIf 2.5mol of TiCl4 and 2.5mol of H2 is carried out to completion,
TiCl4 + 2H2 → Ti + 4HCl
I. All of the TiCl4 is consumed.
II. All of the H2 is consumed.
III. 2.5 mol of Ti is produced.
IV. 5.0 mol of HCl is produced.I and III onlyII and IV onlyII, III, and IV onlyI, III, and IV only - 4. Multiple ChoiceWhen 8.00 g of hydrogen gas reacts as completely as possible with 32.0 g of oxygen gas
2H2 + O2 → 2H2O
in an explosion, the final gaseous mixture will containH2, O2, and H2OH2 and H2OO2 and H2OH2O - 5. Multiple Choice
?Al + ?CuSO4 → ?Al2(SO4)3 + ?Cu
What is the maximum amount of copper that can be formed from the reaction of 50.g of Al and 50.g of CuSO4?ABC¯\_(ツ)_/¯ - 6. Multiple ChoiceConsider the synthesis of carbon monoxide from its elements. If the image on the left represents initial amounts of reactants, which answer represents the balanced chemical equation and the excess reactant?2C + O2 → 2CO;
C is in excess2C + O2 → 2CO;
O2 is in excessC2 + O2 → 2CO;
C2 is in excessC2 + O2 → 2CO;
O2 is in excess - 7. Multiple ChoiceConsider the balanced chemical equation and initial amounts of reactants pictured. Which is the limiting reactant?H2 is limitingCl2 is limitingHCl is limiting#chem4lyfe
- 8. Multiple ChoiceConsider the balanced chemical equation and initial amounts of reactants pictured. Which is the excess reactant and how much remains?CS2;
1 molecule remainsCS2;
3 molecules remainsO2;
1 molecule remainsO2;
3 molecules remains - 9. Multiple ChoiceTrinitrotoluene (TNT) is manufactured by reaction of toluene with nitric acid.
C7H8(s) + 3HNO3(ℓ) → C7H5N3O6(s) + 3H2O(g)
Given 100 moles of each reactant, how many molecules of H2O could form?100x(6.02x1023)300x(6.02x1023)33x(6.02x1023)133x(6.02x1023) - 10. Multiple ChoiceWhich of the following gives the best description of an excess reactant in a chemical reaction?It is the reactant that determines the amount of product formed.It is the molar ratio represented by the coefficients in the balanced chemical equation.It is the reactant that remains when the reaction is complete.It is the mass in grams of 1.0 mol of a reactant found on the periodic table.
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