A 500 mg of arabinose is rehydrated with 4 ml of water.
Then all of the arabinose is added to 150 ml of another media.
I thought the answer was 500 mg/(150 ml + 4ml)=3.25 mg/ml
My teacher says the answer is 125mg/150ml= .833 mg/m which can only be true if 1 ml of the original solution was to the added to 149 ml of media?
2007-01-27 06:33:25 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Maybe your teacher has been having a little too much of the good stuff. I didn't check your arithmetic but if it is correct, then you are right.
Just show him/her the working and politely ask him/her to explain why your calculations are wrong. My guess is that you'll get a golden!!! Yippie, yippie, yippie....woof......woof....woof!!
2007-01-27 06:40:51 · answer #1 · answered by JiveSly 4 · 0⤊ 0⤋
You are correct. Teacher is incorrect.
2007-01-27 14:38:57 · answer #2 · answered by ignoramus 7 · 0⤊ 0⤋