posted by Erica on .
large dose of vitamin C are supposed to cure the common cold. One commercial over-the-counter product consists of 500-mg tablets that are 20% by weight vitamin C. How many tablets should one take for a 1.30g dose of vitamin C?
1 tab has a mass of 500 mg. Since it is 20% vit C, then mg vit C/tab = 500 x 0.20 so
(500*0.2 mg vit C/tab) x # tabs = 1300 mg.
Solve for # tabs.
Back in the days when I was in graduate school Dr. Linus Pauling, a renowned chemist, pushed the idea of massive doses of vitamin C to cure the cold. It was controversial but he was a Nobel prize winner so many people listened.
would you multiple 500x0.20
and then divide the amount with 1.30
You need to brush up on your basic algebra. You punch in 1300 and divide by 500 and by 0.2.