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HONORS & CP CHEMISTRY

HONORS & CP CHEMISTRY. MID TERM EXAM REVIEW. 1. 1. How many atoms of hydrogen are present in 3 moles of acetic acid?. 2. 2. What is the molecular formula of butane?. 3. 3. How many moles of carbon are present in 2 moles of butane?. 4. 4. What is the percent composition of ethanol?. 5.

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HONORS & CP CHEMISTRY

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  1. HONORS & CP CHEMISTRY MID TERM EXAM REVIEW gugs 1

  2. 1. How many atoms of hydrogen are present in 3 moles of acetic acid? 2

  3. 2. What is the molecular formula of butane? gugs 3

  4. 3. How many moles of carbon are present in 2 moles of butane? gugs 4

  5. 4. What is the percent composition of ethanol? gugs 5

  6. 5. Classify the reactions shown below gugs 6

  7. 6. What number should be written in front of Na to balance the equationNa + Cl2 NaCl ? gugs 7

  8. 7. What number should be written in front of Fe in order to balanceFe + O2 Fe2O3? gugs 8

  9. 8.Measure the object with the ruler to the correct number of significant figures. gugs 9

  10. 9. Classify each as accurate &/ or precise gugs 10

  11. 10. What symbol expresses uncertainty in a measurement?

  12. 11. Name the compound S3O6

  13. 12. What is the formula for the compound that is formed by magnesium and hydroxide ions?

  14. 13. What is the formula for the compound that will form between calcium and phosphate ions?

  15. 14. What is the correct formula for barium oxide?

  16. 15. What is the volume of a mole of gas at STP?

  17. 16. In a chemical reaction, the total mass of the products compared to the total mass of the reactants is

  18. 17. Calculate the number of atoms in 1.40 mol of Ag.

  19. 18. Calculate the number of liters of gas in 1.47 mols at STP

  20. 19. In the formula Ca3(PO4)2, the total number of oxygen atoms is

  21. 20. In the formula 3 Mg(NO3)2, the total number of oxygen atoms is

  22. 21. In the formula 3 Mg(NO3)2, the total number of atoms is

  23. 22. In the expression 3Mg(NO3)2, the number 2 is known as

  24. 23. In the expression 6 Ca3(PO4)2, the 6 is known as the

  25. 24. What is the name of the Law that directs us to balance equations?

  26. 25. When oxygen is available, nitrogen dioxide is produced from the burning of nitrogen. Write the word equation for this reaction.

  27. 26. Give two examples of a chemical change.

  28. 27. Classify each of the following reactions: 2 Mg + O2 MgO CH4 + O2 CO2 + 2 H2O AgNO3 + NaCl  NaNO3 + AgCl H2O  H2 + O2 AgCl + Cu  CuCl + Ag

  29. 28. Balance each of the following equations a. NaCl  Na + Cl2 b. S + Cl2  SCl2 c. K + AgCl  Ag + KCl d. Ca(OH)2 + HCl  H2O + CaCl2

  30. 29. Use the experiment shown in the figure to answer the questions a. A gas was given off, collected in a test tube, and then tested with a burning splint. A “pop/chirp” was heard. What was the gas?

  31. 29. Use the experiment shown in the figure to answer the questions b. The substances Mg metal and dilute HNO3, are called --?

  32. 29. Use the experiment shown in the figure to answer the questions c. Write the correct balanced equation for the experiment

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