- Joined
- Jan 17, 2018
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This question asks for the [NaCl] in blood given an osmotic pressure of 7, as well as the info that the osmotic pressure of sea water is 28 atm and the [NaCl] is 0.50 M.
I got this question right, but I'm not sure my reasoning is correct. I had no idea how to solve this, so I started with the osmotic pressure equation pi = iMRT.
I started with the shaky assumption that temperature was the same for both (we know that Vant Hoff factor and gas constant are same), and set 28=i(0.50)RT => iRT = 56 => (M)(iRT) = 7 therefore M*56 = 7 and M = 1/8 = 0.12.
Is this correct?
Also I scored a 132 on the bio section but I felt unsure and unconfident on so many questions. I feel that if conditions were different or I was feeling a little off on the day of the test, my score might plummet.
I got this question right, but I'm not sure my reasoning is correct. I had no idea how to solve this, so I started with the osmotic pressure equation pi = iMRT.
I started with the shaky assumption that temperature was the same for both (we know that Vant Hoff factor and gas constant are same), and set 28=i(0.50)RT => iRT = 56 => (M)(iRT) = 7 therefore M*56 = 7 and M = 1/8 = 0.12.
Is this correct?
Also I scored a 132 on the bio section but I felt unsure and unconfident on so many questions. I feel that if conditions were different or I was feeling a little off on the day of the test, my score might plummet.
