Equations and Stoichiometry
True / False
| 1. |
What is the definition of Stoichiometry
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| 2. |
How do you balance an equation?
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| 3. |
What is the formula for percent yield and theoretical yield?
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| 4. |
What is the difference between a product and a reactant? |
| 5. |
2C2H6 + 7 O2 → 4 CO2 + 6H20,
write the mole ratios
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Multiple Choice
Use the following equation for the next three multiple choice questions
______H3PO4 + ______MgCO3 → ______Mg3(PO4)2 + ______CO2 + _______H2O
| 6. |
The sequence of coefficients for the balanced equation is ?
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| 7. |
If 15.0 g of carbon dioxide is produced, the number of moles of magnesium carbonate used is
?
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| 8. |
If 38.0 g of magnesium carbonate react completely with H3PO4, the number of grams of carbon dioxide produced is
?
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| 9. |
Identify the following types of reactions
| A. |
(NH4)2SO3 → 2NH3 + H2O + SO2 |
| D. |
Al(OH)3 + 3 HCl → AlCl3 + 3 H2O |
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| 10. |
What type of reaction is 2 Al + 3 Br 2 →
What are the products? |
| 11. |
Use the activity series to predict which one of the following reactions will occur.
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| 12. |
In a chemical reaction, the mass of the products ____.
| A. |
is less than the mass of the reactants |
| B. |
is greater than the mass of the reactants |
| C. |
is equal to the mass of the reactants |
| D. |
has no relationship to the mass of the reactants |
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| 13. |
In the reaction 2CO(g) + O (g) → 2CO (g), what is the ratio of moles of
carbon monoxide used to moles of CO produced?
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| 14. |
Complete a table (similar to what we did in class) for an
inventory of atoms, molecules, moles, and mass for the following 2
reactions:C H (l) + 8O (g) → 5CO (g) + 6H O(g)
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| 15. |
2S(s) + 3O (g) → 2SO (g)
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| 16. |
How many moles of aluminum are needed to react completely with
0.9 mol of FeO? 2Al(s) + 3FeO(s) → 3Fe(s) + Al O (s)
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| 17. |
The equation below shows the decomposition of lead nitrate. How many grams of oxygen are produced when
7.5 g NO is formed?
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Short Answer
Answer the following questions by showing all your work and answering questions in complete sentences. When appropriate, use factor label method (FLM) and use the correct number of significant digits in your final answer. No credit will be given for answers only.
When sugar ferments, ethyl alcohol is produced according to this process:
_______C6H12O6 → _______C2H5OH + _______CO2
| 18. |
Balance the equation by writing coefficients in the blanks.
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| 19. |
What mass of alcohol can be obtained from 250.0 g of sugar?
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