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PTCB PTCE Exam - Topic 1 Question 36 Discussion

You have been asked by the Pharmacist to prepare 3 liters of a 30% strength solution. Your pharmacy stocks the active ingredient in 8 ounce bottles of 70% strength. How many bottles of the active ingredient will you need to open to complete this request? (Hint - this is and alligation problem)
C) 6
A) 14
B) 10
D) 3

PTCB PTCE Exam - Topic 1 Question 36 Discussion

Actual exam question for PTCB's PTCE exam
Question #: 36
Topic #: 1
[All PTCE Questions]

You have been asked by the Pharmacist to prepare 3 liters of a 30% strength solution. Your pharmacy stocks the active ingredient in 8 ounce bottles of 70% strength. How many bottles of the active ingredient will you need to open to complete this request? (Hint - this is and alligation problem)

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Suggested Answer: C

by Eden at May 07, 2022, 09:19 AM

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Joesph
8 months ago
3 bottles sounds way too low for this concentration.
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Michell
8 months ago
Wait, are we sure about that? Seems like a lot!
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Buddy
9 months ago
Definitely 14 bottles, I double-checked the math!
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Dalene
9 months ago
I think it's actually 10 bottles, right?
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Willodean
9 months ago
You need 14 ounces of the 70% solution for 3 liters of 30%.
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Dortha
9 months ago
I feel like I should be able to figure this out, but I can't remember if we need to convert everything to the same units first. What if I miscalculate the total volume?
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Felton
9 months ago
If I recall correctly, we need to find the difference between the strengths and then calculate how much of each solution we need. I hope I remember the right formula!
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Niesha
9 months ago
I think we practiced a similar question in class where we had to mix different strengths. I might need to double-check the calculations for the volumes.
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Kimberlie
9 months ago
I remember something about using alligation to find the amounts needed, but I'm not sure how to set it up for this specific problem.
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Dortha
9 months ago
Ugh, I hate questions about inventory management. There are so many factors to consider. I'll have to really think through the potential negatives here.
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Annamae
9 months ago
I think the answer is A, but I'm not 100% certain. I'll make a note to double-check the details of the amendment to Section 43A before submitting my final answer.
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Rickie
10 months ago
I remember we discussed thermal fatigue in class, but I'm not entirely sure if that's the main issue here with condensate in the steam.
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