Tritium, 1H3 has a half-life of 12.26 yr. A 5.00 mL sample of tritiated water has an activity of 2.40 × 109 cpm. How many years will it take for the activity to fall to3.00 × 108 cpm?
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
6.13
b
12.16
c
24.52
d
36.78
answer is D.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
C=Co12y3.00×108=2.40×10912y12y=18=123∴ y=3 or tt50=3∴ T=3×t50=36.78yr