× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
o
5
4
m
4
b
4
x
4
a
4
l
4
t
4
S
4
m
3
s
3
New Topic  
ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3561
12 years ago
Fermium-253 has a half-life of 3.00 days. A sample of fermium has 7.37 × 107 nuclei. How long will it take for there to be only 3.36 × 106 fermium nuclei in this sample?
A) 2.75 days
B) 9.80 days
C) 13.4 days
D) 15.7 days
E) 58.6 days
Read 1325 times
2 Replies

Related Topics

Replies
wrote...
12 years ago
A) 2.75 days
wrote...
A year ago
Is this how it's done?

Fermium-253 has a half-life of 3.00 days. A sample of fermium has 7.77 × 107 nuclei. How long will it take for there to be only 2.96 × 106 fermium nuclei in this sample?
 Attached file 
Thumbnail(s):
You must login or register to gain access to this attachment.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  873 People Browsing
Related Images
  
 1470
  
 36
  
 129
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 308

Previous poll results: How often do you eat-out per week?