Question

Here's what I got:

The protein albumen, found in human blood, has a molar mass of 66,500 g/mol. Its concentration in blood plasma is normally about 40 g/L. Express this value in % m/v, ppm, and molar. Assume the density of blood is 1.06 g/mL.

So, to express it in %m/v I would need to do 66,500 (g/mol) / 40 (g/L)?

And then for PPM, what would I need to do?
My issue is that there are a lot of numbers, do I use 1.06 g/mL or 40 g/L?

And then for molar, is that just the molar value of the blood? blood plasma? density?

Answer 1

I don't intend to tackle this problem. It is so full of ambiguities I can't count all of them. It is unclear if they want the %m/v, ppm, and molarity in terms of blood plasma or in terms of whole blood. The 40 g/L number is the approximate value of albumin in SERUM. The 1.06 g/mL is the value for density of whole blood. I have absolutely no idea if the question wants ppm in serum, in whole blood, or in plasma. Sorry about that. Perhaps a biologist or a pathologist can make sense of this.