19. Add 1 mL to 2 mL mix and transfer 1 mL to next tube.
20. 1.5 mg/dL
21. Dilute 50 mL of 1 mg/dL to 200 mL with water
22. Add 60g to dry reagent to 50 mL water
23.
24.
LAB MATH
1. 1125 cm or 11.25m
2. 633 years old
3. 1:25 or 1/25
4. 68
5. 37
6.
a. 1 x 10³
b. 1 x 10³
c. 1 x 10¨³
d. 1 x 10³
e. 2 x 10e¨6
f. 5.2 x 10¨²
g. 1 x 10¨¹
7. 1.8
8. 0.16
9. 0.33
10. 60g
11. 61.3g
12. 70g
13. 5.55 mL of stock qs to 500 mL
14. 10
15. 5.3
16. 21
17. 1/9,765,625
18. 843.8mg
19. Add 1 mL to 2 mL mix and transfer 1 mL to next tube.
20. 1.5 mg/dL
21. Dilute 50 mL of 1 mg/dL to 200 mL with water
22. Add 60g to dry reagent to 50 mL water
23.
24.
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2-1. kilometers
2-2. grams
2-3. milligrams or micrograms
2-4. kilograms
2-5. centimeters or millimeters
2-6. deciliters or milliliters (liters would be ok but it would be a number that is a fraction of one)
2-7. microliters or milliliters
2-8. liters or deciliters or even dekaliters (milliliters would be a large number and unweildy
2-9. liters, dekaliters or deciliters
2-10. microgram
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2-11. 2 dL
2-12. 4 x 10¨² kg
2-13. 4 x 10e8 mg
2-14. 2 cm
2-15. 4.0 x 10e¨7m
2-16. 5.0 x 10³ mL
2-17. 2.0 x 10e¨5 mg
2-18. 1.5 x 10e7 mg
2-19. 40 dL
2-20. 5.0 x 10¨¹ dL
2-21. 1.0 x 10¨²mL
2-22. 5.0 x10² µL
2-23. 3.2 x 10e4 g
2-24. 4.0 x 10¹ fg
2-25. 1.2 x 10¨²¹ mM
2-26. 5.0 x 10¹ mg/dL
2-27. 1.5 x 10e5 mg/dL
2-28. 7.2 mg/dL
2-29. 2.3 x 10e¨5 µg/mL
2-30. 117 mg/24 hours
2-31. 240 mg/24 hours
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TEMPERATURE
3-1. a. 3.3 °C
b. 43.3 °C
c. 29.4 °C
d. 196.1 °C
3-2. a. 53.6 °F
b. 77 °F
c. 104 °F
d. 140 °F
e. 98.6 °F
f. 208.4 °F
g. 356 °F
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CONVERSION OF KILOGRAMS AND POUNDS
4.1. 45.5 kg
4.2. 105.6 lb
I can't tell you if you obtained the correct answer for your weight since I don't know your weight but if your answer is a little less than half the number in pounds you are probably correct.
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1. 2 x 10¨²
2. 4 x 10²
3. 3 x 10e¨9
4. 3 x 10e9
5. 4 x 10e¨6
6. 5 x 10e6
7. 1 x 10¨²
8. 5 x 10¹
9. 5 x 10e¨5
10. 2.2 x 10°
11. 5 x 10¨²
12. 1 x 10¨²
13. 1 x 10²
14. 1.5 x 10²
15. 2 x 10²
16. 1.2 x 10°
17. 5 x 10e5
18. 2.2
19. 121
20. 77
21. 57
22. 31.7
23. 248
24. 77
25. -4.4
26. 112.5 mM/1500 mL
27. 2707 mg
28. 920 mg
29. 11.8 mg/dL
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5-1. 0.85g NaCl
5-2. 4g CaCl2
5-3. 75mL isopropanol
5-4. 17g NaCl
5-5. 1g CaCl2
5-6. 40g NaOH
5-7. 120g NaOH
5-8. 222g CaCl2
5-9. 116.5g BaSO4
5-10. 582.5g BaSO4
5-11. 249.8g CaCl2
5-12. 10% (w/v)
5-13. 30% (v/v)
5-14. 1M
5-15. 4M
5-16. 4M
5-17. 0.45N
5-18. 5.5M
5-19. 3.2N
5-20. 20N, 10 M
5-21. Take 1L of 12 N NaOH and dilute to 3L
5-22. 432 mL of 2N H2S04
5-23. 0.06N
5-24 0.8N
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5-25. 16.3 mL conc. H2S04
5-26. a. The concentration is 12N and the volume is 500 mL of stock needed to make 6N
b. concentration is 15.8N and volume is 379.7 mL
c. concentration is 36.7N and volume is 163.5 mL
d. concentration is 14.9N and volume is 402.7 mL
e. concentration is 17.3N and volume is 346.8 mL
5-27. >7g in 500 mL
5-28. 10.5 N
5-29. 26.8N
5-30. 5.6 mL stock solution qs to 500 mL
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1. 17.5 mL qs 250 mL
2. 60 mL qs 1500 mL
3. 17.8g qs 4L
4. 200 mL qs 1L
5. 16g qs 200 mL
6. 1.62N
7. 40L
8. 2 mL
9. 26.8 N
10. 5.6 mL
11. 0.15N
12. 600g
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ANHYDROUS AND HYDRATED CHEMICAL PROBLEMS
6-1. 228.3g CuSO4·8H20
6-2. 3.8g BaSO4
6-3. 201g CaCl2·5H20
6-4. 36.7g CaCl2·10H20
6-5. 199.5g Na2SO4·10H20
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DILUTIONS AND STANDARDS PROBLEMS
7-1. 1/48
7-2. 1/25
7-3. 1/192
7-4. 1/729
7-5. solvent volume = 3.0 mL
solute volume = 1.0 mL
mix and transfer 1.0 mL
7-6. solvent volume = 0.5 mL
solute volume = 0.5 mL
mix and transfer 0.5 mL
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7-7. 10 mg/dL
7-8. 50 mg/dL glucose
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7-9. make a 1/40 dilution
7-10. make a 1/50 dilution
7-11. 109.4 mg/dL protein
7-12. 0.001 mg/mL nitrogen
7-13. 0.5 mg/mL glucose
7-14. make a 1/20 dilution
7-15. take 25 mL of stock and dilute to 100 mL
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8-1. 10 mM/L Ca++
8-2. 152.2 mM/L Na+
8-3. 6.7 mM/L glucose or 6.7 SI
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8-4. 160 mg/dL Ca++
8-5. 805 mg/dL Na+
8-6. 18.5 mg/dL urea
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1. directly related
inversely related
straight for concentration and absorbance
curved for concentration and transmission
2. a. 31.5
b. inversely related
c. 1.6
d. $8,600 Lulu
e. $2,150 Geraldine
3. 11 a.m.
4. a. not completely
b. inversely
c. 55%
d. 6 (can't have part of a student)
5. a. linear graph paper
b. 514
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1. 5 x 10¨2, 2 x 10e¨4, 1.5 x 10e7
2. 62.6°F
3. 10°C
4. 84 kg
5. 224 lb
6. 3 mM/L
7. 333.5 mg/dL
8. 17.8g
9. 187g
10. 30 mg/dL
11. 1/40
12. 0.75 mL solute + 0.75 mL solvent, mix, transfer 0.75 mL
13. 3.4%
14. 1500 mL absolute isopropanol qs 2L
15. 4.8N, 50%, 2.4M
16. 141%, 14.4M, 43N, 139.5 mL
17. 2.75L
18. 15 mL
19. 0.75N, 333 mL of HCl diluted to 500 mL
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