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Calculate the Osmolarity of 3% hypertonic saline?
Suggested Answer: A
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Osmolarity = mOsmol/L = (wt of substance (g/mL))/(MW(g/mol)) (# of particles) 1000 Weight of substance: 3% = (3g/100mL) = (xg/1000mL), x = 30g/L. # of particles NaCL: Na+ + Cl- (2 particles). mOsmol/L = (30g/L)/ (58.5g/mol) 2 1000 = 1,025.6. The answer is 1026 mOsmol/L.
14 comments · newest first
BE
Belen
11 months ago
565 mOsm/L? That sounds way off to me!
JO
Johnson
12 months ago
I thought it was around 287 mOsm/L, but I guess not!
JU
Juliann
12 months ago
Wait, how did you get that number? Seems high.
BR
Brandon
12 months ago
Totally agree, that's the right answer!
LU
Luis
1 year ago
It's 1026 mOsmol/L for 3% saline!
MA
Marcos
1 year ago
I feel like the answer is around 300 mOsm/L, but I can't remember if that's for 0.9% or 3% saline.
AV
Avery
1 year ago
If I remember correctly, we need to consider the dissociation of sodium and chloride ions in saline. That might help narrow down the options.
MA
Maynard
1 year ago
I think I practiced a similar question about saline concentrations, but I can't recall the exact formula we used.
ST
Stevie
1 year ago
I remember we calculated osmolarity in class, but I'm not sure how to apply it to saline solutions.
KY
Kyoko
1 year ago
Hmm, I'm a bit confused on the difference between a composition member and a sub-controller. I'll need to review that concept again.
TR
Tracey
1 year ago
Gap analysis... I'm drawing a blank on the specifics, but I know it's an important part of the benchmarking process. I'll have to review my notes to refresh my memory on this one.
CR
Cristal
1 year ago
I've got this! The Scrum Master and Product Owner should be looking for team members with the traits in option B - collaborative, self-organizing, and negotiation skills. That's the perfect combination for an effective Scrum team.
VE
Venita
1 year ago
Hmm, I'm a bit unsure about this one. Is Data Confidentiality the right answer since we need to secure the message content? Or is Data Origin Authentication better for verifying the source?
IV
Ivan
1 year ago
I'm a bit unsure about this one. The image doesn't seem to provide a lot of obvious clues, so I'll need to carefully read through the options and think about what would logically indicate a case is in progress.