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PTCB PTCE Exam - Topic 7 Question 12 Discussion

How many milligrams of atropine sulfate are needed to make 30ml of a 1:200 solution?
A) 1.5
B) 15
C) 150
D) 1,500 Explanatin: Following formula: Final volume X % (expressed as a decimal)= amount of active ingredient(g). The final volume is 30ml and 1:200 can be expressed as 1/200 or 0.005g. Multiplying 0.15g x 1000mg/g (changing grams to milligram...) will yeald 150mg.

PTCB PTCE Exam - Topic 7 Question 12 Discussion

Actual exam question for PTCB's PTCE exam
Question #: 12
Topic #: 7
[All PTCE Questions]

How many milligrams of atropine sulfate are needed to make 30ml of a 1:200 solution?

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Suggested Answer: A

by Carmela at May 04, 2022, 04:43 PM

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Haydee
8 months ago
Just did the math, and it adds up!
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Lisha
8 months ago
Yup, 150mg checks out!
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Rolf
9 months ago
Wait, are we sure about that? Seems high.
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Anabel
9 months ago
Totally agree, it's 150mg!
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Shanda
9 months ago
You need 150mg for a 1:200 solution in 30ml.
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Elly
9 months ago
I keep second-guessing myself on these calculations. Was it 1:200 or 200:1? I hope I didn't mix that up!
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Marshall
9 months ago
I think the formula we used in class was something like final volume times the concentration. It feels like 150 mg could be the right answer.
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Laurene
9 months ago
I remember practicing similar questions about dilutions, but I'm not entirely sure if I got the conversion right.
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Jesusita
9 months ago
I definitely recall that 1:200 means there's a small amount of active ingredient, but I can't remember if it was 150 mg or something else.
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Gilberto
9 months ago
Hmm, this seems like a tricky one. The complexity to automate the GUI with the third-party controls could be a real challenge. I'll need to think carefully about the best approach.
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Josue
10 months ago
I've reviewed similar questions before, so I think I can narrow this down and make an educated guess.
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