Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

a human body requires .01cactivity of a radioactive substance for 24 hrs . half life of radioactive substance is 6 hours . then injection of maximum activity of radioactivity of radioactive substance can be ?
Asked by Atulcaald | 31 May, 2018, 09:43: PM
answered-by-expert Expert Answer
G i v e n colon H a l f space l i f e equals space 6 space H r N u m b e r space o f space h a l f space l i f e space left parenthesis n right parenthesis space i n space 24 space h r space equals 24 over 6 equals space 4 space space space space n equals 4 T h e space a c t i v i t y space a f t e r space 4 space h a l f l i f e space equals space 0.01 T h e space i n i t i a l space a c t i v i t y space o f space t h e space s a m p l e space c a n space b e space c a l c u l a t e d space a s space A c t i v i t y space a f t e r space 4 space h a l f space l i f e space equals space I n i t i a l space a c t i v i t y space cross times open parentheses 1 half close parentheses to the power of n space space space space space space space space space space space space space space space space space space space space space space space space space space space space 0.01 space M space equals space i n t i a l space a c t i v i t y cross times open parentheses 1 half close parentheses to the power of 4 I n i t i a l space a c t i v i t y space equals space 0.01 space cross times space 2 to the power of 4 space equals space 0.16 space M
Answered by Ramandeep | 01 Jun, 2018, 09:57: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Chemistry
Do I have to remember structures of drugs lekin histamine,cimetidine etc for boards exam .they are very complex
Asked by ajaysankhala051 | 10 Feb, 2020, 01:00: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
What is the full form of anti-oxidants --- BHA BHT
Asked by bhatnagardrpiyush | 18 Jun, 2019, 04:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
how is organic chemistry useful in our daily life or further....???? and i need some tips on how to study organic chemistry and what are the key points to remember in it........plsss help i am student of topperlearning.....
Asked by chaitanyakarthik777 | 17 Aug, 2018, 09:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
a human body requires .01cactivity of a radioactive substance for 24 hrs . half life of radioactive substance is 6 hours . then injection of maximum activity of radioactivity of radioactive substance can be ?
Asked by Atulcaald | 31 May, 2018, 09:43: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
What is the name given to the medicine used for getting relief from pain?
Asked by Topperlearning User | 04 Jul, 2014, 02:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
What are receptors and how are they different from enzymes?
Asked by Topperlearning User | 22 Jun, 2016, 10:47: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
What are enzyme inhibitors?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
What are receptors?
Asked by Topperlearning User | 08 Jul, 2014, 05:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Explain the role of receptors as drug target? How the receptor receives the chemical messenger?
Asked by Topperlearning User | 22 Jun, 2016, 10:43: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
How substrate binds to the active site of the enzyme?
Asked by Topperlearning User | 22 Jun, 2016, 10:43: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×