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
Get an answer
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
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
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
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
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
Expert Answered
Asked 3/13/2013 3:05:17 PM
0 Answers/Comments
17,874,275 questions answered
Popular Conversations
Choose the product. -7p3(4p2 + 3p - 1)
Weegy: -7p3(4p2 3p - 1) = 7p3 - 84p6. Source: User: Find the quotient. 42j4k2 ÷ (-3j3k) Weegy: = 42j k /- 3j k) = ...
10/19/2014 5:43:50 PM| 3 Answers
Describe the key differences between managing and leading.
Weegy: ]
10/19/2014 5:51:01 PM| 3 Answers
Find the sum and choose the correct answer. 2n3 + 4n2 - 7 and -n3 + ...
Weegy: (2 n^3+4 n^2-7)+(-n^3+8 n-9) your answer is n^3+4 n^2+8 n-16 User: Select the correct difference. -3z7 - ...
10/19/2014 5:41:21 PM| 2 Answers
Weegy Stuff
S
L
1
1
1
1
L
1
L
Points 2061 [Total 14436]| Ratings 0| Comments 2061| Invitations 0|Offline
S
L
1
L
P
C
1
P
C
1
L
Points 1375 [Total 10856]| Ratings 3| Comments 1345| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 704 [Total 12933]| Ratings 0| Comments 704| Invitations 0|Offline
S
L
Points 423 [Total 1822]| Ratings 0| Comments 423| Invitations 0|Offline
S
1
L
L
Points 418 [Total 6212]| Ratings 3| Comments 388| Invitations 0|Offline
S
Points 329 [Total 329]| Ratings 0| Comments 299| Invitations 3|Offline
S
Points 241 [Total 242]| Ratings 2| Comments 221| Invitations 0|Online
S
Points 125 [Total 125]| Ratings 1| Comments 115| Invitations 0|Offline
S
P
C
L
P
L
1
Points 43 [Total 6277]| Ratings 0| Comments 43| Invitations 0|Offline
S
Points 27 [Total 27]| Ratings 0| Comments 27| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.