Top Posters
Since Sunday
g
3
3
2
J
2
p
2
m
2
h
2
s
2
r
2
d
2
l
2
a
2
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
einsteindude einsteindude
wrote...
Go to Answer
Posts: 5058
Rep: 29 1
9 years ago
The isotope Ga-68 has a half-life of 68 minutes. If a diagnostic test is begun with 15 mCi of this isotope, how much is left after approximately 2 hr and 15 min?
A) 6.8 mCi
B) 68 µCi
C) 3.8 mCi
D) 7.5 mCi
E) 3.8 µCi
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
Authors:
Read 550 times
1 Reply
Replies
Answer accepted by topic starter
f_zah1f_zah1
wrote...
#1
Top Poster
Posts: 10774
Rep: 1064 3
9 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1068 People Browsing
 114 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 297
  
 344
  
 252
Your Opinion
Which country would you like to visit for its food?
Votes: 204
Previous poll results: Who's your favorite biologist?