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
25,653,585 questions answered
Popular Conversations
3x - 4y = 7 3x + 2y = -5 When the second equation is subtracted from ...
Weegy: -6y = 12 User: x + y = k x - y = k The solution to the system shown is _____. (0, k) (2, 2) (k, 0) Weegy: ...
6/29/2016 10:10:18 AM| 3 Answers
It's 3:34, what time was it 50 mins ago?
6/29/2016 2:36:26 AM| 2 Answers
What ending should this word have? deplor- able ible
Weegy: This word should end in -able. DEPLORABLE. User: What ending should this word have? predict- able ible
6/29/2016 6:35:29 AM| 2 Answers
The small, raised features on the surface of the tongue are ...
Weegy: The small, raised features on the surface of the tongue are called: papillae. User: Which of these is NOT a ...
6/29/2016 1:44:48 AM| 1 Answers
Human activity can affect the population size of another species ...
Weegy: ALL OF THE ABOVE. Human activity can affect the population size of another species through: ...
6/29/2016 2:20:39 AM| 1 Answers
Who was the director of the Manhattan Project, which created the ...
Weegy: A. The Marshall Plan provided them with the opportunity to emigrate to the United States and avoid trial. ...
6/29/2016 2:45:05 AM| 1 Answers
Weegy Stuff
S
P
L
Points 1076 [Total 1737] Ratings 2 Comments 1056 Invitations 0 Online
S
Points 379 [Total 740] Ratings 2 Comments 359 Invitations 0 Offline
S
Points 172 [Total 247] Ratings 1 Comments 162 Invitations 0 Offline
S
L
P
P
P
Points 161 [Total 3704] Ratings 0 Comments 161 Invitations 0 Offline
S
Points 137 [Total 418] Ratings 0 Comments 137 Invitations 0 Offline
S
Points 127 [Total 179] Ratings 0 Comments 127 Invitations 0 Offline
S
P
1
Points 107 [Total 852] Ratings 3 Comments 57 Invitations 2 Offline
S
L
Points 87 [Total 4207] Ratings 0 Comments 87 Invitations 0 Offline
S
Points 40 [Total 50] Ratings 1 Comments 30 Invitations 0 Offline
S
Points 32 [Total 139] Ratings 0 Comments 32 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.