Chapter 14, Question 38, page 72, and Final Exam, Question72, page 84 |
The wording and answers have been changed to read: If you have to prepare 1 liter of non-sterile 0.9% saline for drinking water for adrenalectomized rats, how many grams of NaCl do you add to the water?
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| Answer = 9.0 |
Distractors =
0.09
0.9
9.0
90 |
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Midterm Exam, Question 39, page 105, and Final Exam, Question 110, page 72 |
Answer given is incorrect. Where c = concentration and v = volume:
c1* v1=c2 * v2
C1 = 35%, v1 = 1
C2 = 5%, v2 = x
35/1 = 5/x
x = 7 volumes
Therefore, 7 is the total volume for a 5% solution.
The correct answer for how much water to add is 6 because to make up a solution starting with 1 volume of bleach, you must add 6 volumes of water so that that the total volume becomes 7. In short, 7 - 1 = 6. |
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Answer key for Ch. 1, pg. 12, question 5 |
(a) 5
(b) 3
(c) 2
(d) 1
(e) 4 |
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Midterm Exam, Chapters 6-10, pg. 46, question 2 |
Change question to: How often should you clean dog and other large animal cages or stalls? |
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last update 5/05 |
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