Chemistry Worksheet Moles B

Document Sample
Chemistry Worksheet Moles B Powered By Docstoc
					                                     Chemistry
                                     Worksheet
                                       Moles

Do not write on this paper.

Calculate the number of molecules for each compound.
  1.    4.2 moles of Glucose
  2.    3.6 moles of Ethanol
  3.    2.7 moles of Benzene
  4.    5.8 moles of HCl
  5.    8.3 moles of NaOH

Calculate the number of moles for each compound.
  6. 2.78 X 1021 molecules of Benzene
  7. 4.32 X 1024 molecules of HCl
  8. 7.83 X 1020 molecules of Water
  9. 9.14 X 1019 molecules of Propanol
  10. 1.62 X 1022 molecules pf Sucrose

Calculate the molar mass for each compound.
  11.    Butane
  12.    Water
  13.    Sodium Hydroxide
  14.    Hydrochloric Acid
  15.    Benzene

Calculate the number of grams for each compound.
  16.    3.8 moles of NaOH
  17.    1.7 moles of C6H12O6
  18.    9.8 moles of CaNCN
  19.    2.7 moles of MnCl2
  20.    6.3 moles of P4O10

Calculate the number of moles for each compound.
  21.    115g of NaCN
  22.    87g of NaAu(CN)2
  23.    125g of Zn(OH)2
  24.    1234g of ZrI4
  25.    20g of NH3

Calculate the percent composition of each element.
  26.    O in H20
  27.    C in Pentane
  28.    Na in Sodium Hydroxide
  29.    F in CCl2F2
  30.    K in K2CrO4
Calculate the empirical formula with the following elements.
  31.   36.84g of N and 63.16g of O
  32.   35.98g of Al and 64.02g of S
  33.   81.82g of C and 18.18g of H
  34.   60.00g of C, 4.44g of H, and 35.56 of O
  35.   10.89g of Mg, 31.77g of Cl, and 57.34g of O

Calculate the molecular formula with the following elements.
  36.   110.0 g/mol of C3H3O
  37.   58.12 g/mol of C2H5
  38.   60.01 g/mol of NO
  39.   104.0 g/mol of CH
  40.   206.0 g/mol of C13H18O2

Calculate the mole ratio of the product to each reactant.
  41.   4Al(s) + 3O2(g) → 2Al2O3(s)
  42.   2Hg(l) + O2(g) → 2HgO(s)
  43.   2Mg(s) + O2(g) → 2MgO(s)
  44.   N2(g) + 3H2(g) → 2NH3(g)
  45.   2Al(s) + 3Br2(l) → 2AlBr3(s)

Calculate which reactant is the limiting reactant.
  46. 6Na(s) + Fe2O3(s) → 3Na2O(s) + 2F3(s)
            100.0g Na and 100.0g Fe2O3
  47. 6CO2 + 6H2O → C6H12O6 + 6O2
            88.0g CO2 and 64.0g H2O
  48. F3(s) + 2NiO(OH)(s) + 2H2O(l) → Fe(OH)2(s) + 2Ni(OH)2(aq)
            28g F3 and 53g NiO(OH) and 47g H2O
  49. CsF(s) + XeF6(s) → CsXeF7(s)
            63g CsF and 37g XeF6
  50. Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)
            156g Fe2O3 and 200g CO

For 51–55. Calculate the number of grams of each product produced in
numbers 46–50.

For 56–60. Calculate the amount of excess needed for each equation to
take place. (use numbers 46–50)(Use the reactant in most excess)

Calculate the percent yield.
  61.   Was calculated to produce 28g but the experiments produced 22g.
  62.   Was calculated to produce 123g but the experiments produced 108g.
  63.   Was calculated to produce 86g but the experiments produced 84g.
  64.   Was calculated to produce 83g but the experiments produced 90g.
  65.   Was calculated to produce 20g but the experiments produced 17g.
                           Chemistry
                           Worksheet
                             Moles
                              Key

1. 2.53 X 1024 molecules               34. C9H8O4
2. 2.17 X 1024 molecules               35. Mg(ClO4)2 or MgCl2O8
3. 1.63 X 1024 molecules               36. C6H6O2
4. 3.49 X 1024 molecules               37. C4H10
5. 4.99 X 1024 molecules               38. N2O2
6. 4.62 X 10-3 moles                   39. C8H8
7. 7.18 moles                          40. C13H18O2
8. 1.30 X 10-3 moles                   41. 2Al2O3/4Al =1/2, 2Al2O3/3O2 =2/3
9. 1.52 X 10-4 moles                   42. 2HgO/2Hg = 1/1, 2HgO/ O2 = 2/1
10. 2.69 X 10-2 moles                  43. 2MgO/2Mg = 1/1, 2MgO/ O2 = 2/1
11. 58.14 g/mol                        44. 2NH3/ N2 = 2/1, 2NH3/3H2 = 2/3
12. 18.01 g/mol                        45. 2AlBr3/2Al = 1/1, 2AlBr3/3Br2 = 2/3
13. 39.99 g/mol                        46. Fe2O3
14. 36.46 g/mol                        47. CO2
15. 78.12 g/mol                        48. NiO(OH)
16. 151.96g                            49. XeF6
17. 306.20g                            50. Fe2O3
18. 785.08g                            51. 117.12g Na2O, and 71.82g F3
19. 339.77g                            52. 59.43g C6H12O6, and 63.96g O2
20. 1787.81g                           53. 25.97g Fe(OH)2, and 53.57g Ni(OH)2
21. 2.35 moles                         54. 59.43g CsXeF7
22. 0.32 moles                         55. 109.47g Fe, and 129.33g CO2
23. 1.26 moles                         56. 11.06g Na or 2.41g Na
24. 2.06 moles                         57. 28.61g H2O or 36.02g H2O
25. 1.17 moles                         58. 16.47g F3, and 10.41g H2O
26. 88.78%                             59. 40.57g CsF or 22.79g CsF
27. 83.21%                             60. 117.2g CO or 83.15g CO
28. 57.49%                             61. 78.57%
29. 31.43%                             62. 87.80%
30. 40.28%                             63. 97.67%
31. N2O3                               64. 108.43%
32. Al2S3                              65. 85.0%
33. C3H8

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:24
posted:3/3/2012
language:English
pages:3