Regents Chemistry Final Review

Regents Chemistry Final Review

2014 Prentice Hall Review Book Assignments

Ø  Assignment #19: Mole Problems; Chem Equation & Stoichiometry

Page # / Answers
94 / 2. 4
4. 4
6. 4
8. 1
10. 4
12. 2
14. 2
16. 1
18. 1
20. 3
22. 2
24. 3
26. 4
28. 2
Page # / Answers
40 / 59 a). SR k). DR
b). D l). S
c). S m). D
d). DR n). S
e). S o). DR
f). SR p). SR
g). DR q). S
h). SR r). SR
i). D s). DR
j). D t). D
Page # / Answers
42 / 70. 144g + 384g = 528g
72. 90g + 68g = 158g
74. 47.8g -44.6g = 3.2g
76. 28.9g – 8.0g = 20.9g
78. 318.2 lbs – 254.0 lbs. = 64.2 lbs
Page # / Answers
46 / 2. 4
4. 3
6. 4
8. 4
10 a). 84.0 amu; 84.0 g/mole
b). 95.3 amu; 95.3 g/mole
c). 53.5 amu; 53.5 g/mole
d). 162.4 amu; 162.4 g/mole
e). 102.0 amu; 102.0 g/mole
f). 148.3 amu; 148.3 g/mole
g). 342.3 amu; 342.3 g/mole
h). 132.1 amu; 132.1 g/mole
i). 104.0 amu; 104.0 g/mole
j). 342.0 amu; 342.0 g/mole
12. 180.0 amu

Ø  Assignment #19: Mole; Chem Equation & Stoichiometry (con’t)

Page # / Answers
48 / 14. 3
16. 3
18. 2
20. 3
22. 3

24. The crystals were a hydrate. Heating removed the water of hydration.

26. The anhydrous form is 100% N2B4O7. The hydrated crystal is almost 50% water, so it is almost twice as expensive.

28. 4
30. 3
32. 1
34. 4
36. 3
38. 4
40. C2H4
Page # / Answers
56 / 26. 4 mol
27. 6 mol
28. 12 mol
29. Mg + 2HCl à MgCl2 + H2
30. 0.10 mol
31. 0.10 mol
32. 7.0 mol
33. 20. mol (2)