Question

Buttermilk has 9 grams of protein and 12 grams of carbohydrate per cup (237ml). Estimate the concentration in mol/L of protein using the fact that the average protein is 300 amino acids long and the average amino acid has a mass of 110 amu

Answer 1

So the avg molar mass of protein is
300 amino acids x 110 g/amino acid = about 33000.
mols protein = grams/molar mass = about 9/33000 = ?
Then M = mols/L = ?mol from above/0.237L = ?

Answer 2

.0115074798619102

Answer 3

It's actually 0.00115