- #1
darren t
- 6
- 0
Hi Guys,
Im just having a little trouble with this question, I was just wondering whether some one could point me in the right direction.
Fifty six micrograms of 60Co - labeled Vitamin B12 containing 7.36x10^5 c.p.m were added to a sample containing an unknown amount of unlabeled Vitamin B12. The sample was then extracted and the Vitamin B12 purified. The final product contained 49ug of Vitamin B12 and 1.58x10^5 c.p.m of radioactivity. Calculate the amount of unlabelled Vitamin B12 in the sample
I have no idea at all were to start! Could some one please help
Thank you in advance! All the best and happy new year. Darren
Im just having a little trouble with this question, I was just wondering whether some one could point me in the right direction.
Fifty six micrograms of 60Co - labeled Vitamin B12 containing 7.36x10^5 c.p.m were added to a sample containing an unknown amount of unlabeled Vitamin B12. The sample was then extracted and the Vitamin B12 purified. The final product contained 49ug of Vitamin B12 and 1.58x10^5 c.p.m of radioactivity. Calculate the amount of unlabelled Vitamin B12 in the sample
I have no idea at all were to start! Could some one please help
Thank you in advance! All the best and happy new year. Darren