Stoichiometry
3 years ago
durhammw
Save
Edit
Host a game
Live GameLive
Homework
Solo Practice
Practice
20 QuestionsShow answers
  • Question 1
    30 seconds
    Q. What is the first thing you must do to solve a stoichiometry problem?
    answer choices
    Write a Balanced Equation
    Panic
    Write an Unbalanced Equation
    Ask for help
  • Question 2
    30 seconds
    Q. KNO3 --> KNO2 + O2
    What coefficients are needed to balance the reaction?
    answer choices
    2, 2, 1
    2, 3, 2
    1, 2, 2
    1, 3, 1
  • Question 3
    30 seconds
    Q. O2 + CS2 --> CO2 + SO2
    What coefficient would go in front of the O2?
    answer choices
    1
    2
    3
    4
  • Question 4
    30 seconds
    Q. WO3 + H2 --> W + H2O
    What coefficient goes in front of H2?
    answer choices
    1
    2
    3
    4
  • Question 5
    30 seconds
    Q. WO3 + H2 --> W + H2O
    What coefficient goes in front of H2?
    answer choices
    1
    2
    3
    4
  • Question 6
    30 seconds
    Q.  The equation for Percent Yield:
    answer choices
    (predicted/experimental) X 100
    (experimental/predicted) X 100
    (experimental - predicted)/ Predicted X 100
  • Question 7
    30 seconds
    Q. True or False. You must convert grams to moles to do stoichiometry.
    answer choices
    True
    False
  • Question 8
    60 seconds
    Q. 2H2   +   O2  →  2H2O
    How many moles of water can be produced if 8 moles H2 are used?
    answer choices
    4 moles
    8 moles
    16 moles
    2 moles
  • Question 9
    60 seconds
    Q. 2H2  +   O2  →  2H2O
    How many moles of oxygen are consumed if 8 moles H2 are used?
    answer choices
    2
    4
    6
    8
  • Question 10
    30 seconds
    Q. What is a Limiting Reagent?
    answer choices
    speeds up a reaction
    what you run out of first
    what you have left over
    slows down a reaction
  • Question 11
    30 seconds
    Q. What is a Excess Reagent?
    answer choices
    amount you end with
    what you run out of first
    what you have left over
    what you start with
  • Question 12
    45 seconds
    Q. You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich.  If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?
    answer choices
    bread
    jelly
    peanut butter
    sandwich
  • Question 13
    30 seconds
    Q. For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of Mg to moles Fe?
    answer choices
    3mol Mg / 2 mol Fe
    2 mol Mg/ 3 mol Fe
    1 mol Fe/ 2 mol Fe
    3 mol MgO / 2 mol Fe
  • Question 14
    30 seconds
    Q. For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?
    answer choices
    3mol Mg / 2 mol Fe
    2 mol Mg/ 3 mol Fe
    1 mol Fe/ 2 mol Fe
    3 mol MgO / 2 mol Fe
  • Question 15
    30 seconds
    Q. Use the equation 2 Al + 3 Cl2 ---> 2 AlCl3.  If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.
    answer choices
    AlCl3
    Cl2
    Al
    Gary Busey
  • Question 16
    30 seconds
    Q. If you predicted that 1.5 moles of Magnessium are used in a reaction, and you have 2.0 moles of Magnessium, what type of reactant is Magnessium?
    answer choices
    Limiting Reactant
    Excess Reactant
    Fast Reacter
    Non-Reactant
  • Question 17
    30 seconds
    Q. If you predicted that 1.5 moles of Magnesium are used in a reaction, and you have 1.0 mole of Magnesium, how much Magnesium is in Excess?
    answer choices
    0.5 moles Mg
    1.5 moles Mg
    1.0 mole Mg
    0.0 Moles Mg
  • Question 18
    60 seconds
    Q. Carbon and Oxygen combine to form CO2. If 10g of Carbon combines with Oxygen to produce 20g of CO2 and 10g of Oxygen combines with Carbon to produce 15g of CO2, How many grams of CO2 are produced from 10g of Carbon and 10g of Oxygen?
    answer choices
    20g of CO2
    15g of CO2
    17.5g of CO2
    25g of CO2
  • Question 19
    30 seconds
    Q. When does a chemical reaction stop?
    answer choices
    When the lab is finished
    When the excess reactant is used up
    When the limiting reactant is used up
    Chemical reactions never stop
  • Question 20
    30 seconds
    Q. The Formula to make S'mores is:
    2C + 1M + G→ C2MG2. If you have 5 Marshmallows (M), 9 Chocolate Pieces (C), and 9 Graham Cracker Halves (G), how many S'mores can you make?
    answer choices
    5
    4
    8
    42
Report Quiz
Join a game