Question and answer
One isotope of silicon, Si-32, has a half-life of 150 years. If there were 300 atoms of silicon initially, approximately how many atoms will be left after 150 years?
start with 300 atoms - after 150 yrs, half are gone -150 remain. 150 years after that, half of the remaining 150 will be gone and you are down to 75. After the 3rd 150 year stretch, half of those will be gone and you have 37.5 atoms left. [ You can't have half an atom, so call it 37 or 38. With very large numbers of atoms, you wont run into the half an atom problem for a very very long time -
maybe never ]
Expert answered|khalilahmed88|Points 40|
Question
Asked 3/20/2013 3:54:53 PM
0 Answers/Comments
Ask a question
Not a good answer? Get an answer now. (FREE)
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
Cycloalkanes are alicyclic compounds. True False
Weegy: The answer is True. Cycloalkanes are alkanes that have carbon atoms that form a ring (called alicyclic compounds). (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 3/13/2013 10:59:02 AM
0 Answers/Comments
Which of the following can aromatic compounds be? A. Autocyclic B. Hydrothermal C. Polycyclic D. Thermocyclic
Weegy: aromatic compounds can be Polycyclic . answer is C (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 3/13/2013 11:28:26 AM
0 Answers/Comments
How many possible hydrogen atoms can be in a cycloalkane with 48 carbon atoms? A. 46 B. 48 C. 96 D. 98
Weegy: How many possible hydrogen atoms can be in a cycloalkane with 48 carbon atoms? C. 96 (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 3/13/2013 11:37:53 AM
0 Answers/Comments
Which statement is accurate regarding cycloalkanes? A. They have aromatic properties. B. They have saturated ring structures. C. They are unsaturated. D. They have triple bonds.
Weegy: Cycloalkanes have saturated ring structures. Cycloalkanes are saturated hydrocarbons containing a ring in their carbon backbones. (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 3/13/2013 2:59:19 PM
0 Answers/Comments
How many possible hydrogen atoms can be in a cycloalkane with 48 carbon atoms? A. 46 B. 48 C. 96 D. 98
Weegy: 96 hydrogen atoms can be in a cycloalkane with 48 carbon atoms. (More)
Question
All Categories|No Subcategories|Expert Answered
Asked 3/13/2013 3:05:17 PM
0 Answers/Comments
Home | Contact | Terms | Privacy | Social | ©2013 Purple Inc.
Ad
Popular Conversations
write 0.0053 as a percent
4/18/2014 4:31:03 PM| 6 Answers
One number is 7 more than twice another. If their difference is 22, ...
Weegy: One number is 9 more than twice another. If their difference is 22, what is the larger number? answer is 37. ...
4/18/2014 11:15:41 AM| 5 Answers
which life stage does nutritional issue might cause the most problems ...
Weegy: Malnutrition is a common problem in cancer patients that has been relief from nutrition impact symptoms and ...
4/19/2014 1:18:55 AM| 5 Answers
A letter that is mailed today will be delivered by 10:30 A.M. ...
Weegy: A letter that is mailed today will be delivered by 10:30 A.M. tomorrow. This is an C. adverb clause. User: ...
4/18/2014 5:43:32 PM| 4 Answers
genetic code
Weegy: Please ask your question about genetics. User: The Challenger was the first space shuttle.
4/18/2014 8:40:33 AM| 3 Answers
Find the excluded value of the rational expression 2x + 6 4x – 8 ...
Weegy: D. 2 User: Multiply. State the Excluded value 5/2a x 3/a^2 Weegy: B.15/2a^3 where a =0 User: Multiply. ...
4/18/2014 2:09:56 PM| 3 Answers
write 13.7 as a percent
4/18/2014 3:58:02 PM| 3 Answers
Weegy Stuff
S
L
P
C
L
P
C
Points 1498 [Total 6885]| Ratings 0| Comments 1498| Invitations 0|Offline
S
L
P
C
P
C
1
L
P
C
Points 1453 [Total 9334]| Ratings 0| Comments 1453| Invitations 0|Offline
S
1
L
1
L
P
Points 465 [Total 7142]| Ratings 1| Comments 455| Invitations 0|Offline
S
L
Points 397 [Total 2844]| Ratings 2| Comments 367| Invitations 1|Offline
S
Points 160 [Total 576]| Ratings 0| Comments 160| Invitations 0|Offline
S
1
Points 138 [Total 468]| Ratings 3| Comments 108| Invitations 0|Offline
S
Points 129 [Total 773]| Ratings 1| Comments 119| Invitations 0|Offline
S
Points 128 [Total 128]| Ratings 5| Comments 58| Invitations 2|Offline
S
R
Points 122 [Total 234]| Ratings 5| Comments 62| Invitations 1|Offline
S
P
C
L
P
Points 76 [Total 3921]| Ratings 0| Comments 76| Invitations 0|Offline