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Building Skills 3 pp. 30-31 Practice Problems

Building Skills 3 pp. 30-31 Practice Problems. For each formula, name the elements present and give the number of atoms of each element. BaF 2. ANSWER!. Barium (Ba): 1 Fluorine (F): 2. For the following equation give an atom inventory: N 2 + 3 H 2  2NH 3. Reactants N-2 H-6

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Building Skills 3 pp. 30-31 Practice Problems

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  1. Building Skills 3 pp. 30-31 Practice Problems

  2. For each formula, name the elements present and give the number of atoms of each element.BaF2

  3. ANSWER! • Barium (Ba): 1 • Fluorine (F): 2

  4. For the following equation give an atom inventory: N2 + 3 H2 2NH3

  5. Reactants N-2 H-6 Products N-2 H-6

  6. For each formula, name the elements present and give the number of atoms of each element.H2O2

  7. Hydrogen (H): 2 • Oxygen (O): 2

  8. For the following equation give a molecule inventory:N2 + 3H2 2NH3

  9. One nitrogen molecule & three molecules of hydrogen yields two molecules of ammonia (NH3).

  10. For the following equation give an atom inventory:O2 + 2H22 H2O

  11. Reactants O-2 H-4 Products O-2 H-4

  12. For each formula, name the elements present and give the number of atoms of each element. CaSO4

  13. Calcium (Ca): 1 • Sulfur (S): 1 • Oxygen (O): 4

  14. What are subscripts?

  15. The lower case numbers in a formula (the number 2 in H20)

  16. For each formula, name the elements present and give the number of atoms of each element.Al2SO4

  17. -Aluminum (Al):2 -Sulfur (S):1 Oxygen (O):4

  18. For the following equation list the reactants:O2 + 2 H2 2 H2O

  19. O2 & H2

  20. For each formula, name the elements present and give the number of atoms of each element.NH4NO3

  21. Nitrogen (N):2 • Hydrogen (H):4 • Oxygen (O):3

  22. What is a coefficent?

  23. The large number out in front of a formula (like 2 in front of the 2 H2O).

  24. For each formula, name the elements present and give the number of atoms of each element.Li2CO3

  25. -Lithium (Li): 2 -Carbon (C): 1 -Oxygen (O): 3

  26. For the following equation give a molecule inventory:CH4 +4O2CO2+ 2H2O

  27. One methane (CH4) and four oxygen molecules yield one carbon dioxide and two water molecules.

  28. For each formula, name the elements present and give the number of atoms of each element. (NH4)3PO3

  29. -Nitrogen (N): 3 -Hydrogen (H): 12 -Phosphorus (P): 1 -Oxygen (O): 3

  30. List the reactants in the following equation:N2 + 3 H22 NH3

  31. N2 & H2

  32. 4NH3+ 7O2 4NO2 + 6H2O Copy this equation.1. Underline the coefficients.2. Circle the molecules.

  33. Coefficients: 4NH3+ 7O24NO2 +6H2O Molecules: NH3 NO2 O2 H20

  34. For each formula, name the elements present and give the number of atoms of each element.HC2H3O2

  35. -Hydrogen (H): 4 -Carbon (C): 2 -Oxygen (O): 2

  36. List the products in the following equation:CH4 + 4O2CO2 + H2O

  37. For each formula, name the elements present and give the number of atoms of each element.Na2O

  38. ANSWER! • Sodium (Na): 2 • Oxygen (O): 1

  39. For each formula, name the elements present and give the number of atoms of each element.Al2O3

  40. ANSWER! • Aluminum (Al): 2 • Oxygen (O): 3

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