What is being referred to with the chemist's statement "like dissolves like"?
If you would translate that to dutch... Could you explain it a bit more?
edit: and wtf is up with the random asian chick ad?
edit: and wtf is up with the random asian chick ad?
Last edited by ']['error (2008-05-19 00:00:34)
it has to do with the polarity of chemicals. solvents and solutes.
i believe it either means that a polar solvent will dissolve a polar solute (and vice versa) or that a biotic solvent will dissolve a biotic solute (and vice versa). i'm a little rusty tonight but i'm leaning heavily on the first one.
Thanks to both. You told me where to look in the book, so I could find the exact answer.
what happens what you add hydrogen + fire
paint explanations?
paint explanations?
Last edited by Nappy (2008-05-19 01:17:27)
Nappy wrote:
what happens what you add hydrogen + fire
paint explanations?
something like that.']['error wrote:
http://philip9876.files.wordpress.com/2 … losion.jpgNappy wrote:
what happens what you add hydrogen + fire
paint explanations?
polar solvents dissolve polar molecules
non-polar solvents dissolve non-polar molecules
non-polar solvents dissolve non-polar molecules
Need more help...
What would be a situation outside of chemistry that illustrates the concept of half-life?
What would be a situation outside of chemistry that illustrates the concept of half-life?
The video game, duh.
Radio carbon dating.
Radio carbon dating.
*cue half-life joke*
Archeology, carbon-dating (i.e., how many half-lives the isotope has been through) can be used to find the age of specimens.
Archeology, carbon-dating (i.e., how many half-lives the isotope has been through) can be used to find the age of specimens.
How does it illustrate the concept of half-life?
It reads the rate of radio active decay and compairs it to the rate of decay for fresh carbon 12 to determin how old it is.nukchebi0 wrote:
How does it illustrate the concept of half-life?
Your text book will have more info, its the most cliche example ever.
nerdy azn.cowami wrote:
*cue half-life joke*
Archeology, carbon-dating (i.e., how many half-lives the isotope has been through) can be used to find the age of specimens.
Am I thinking of illustrate in a different sense?
I interpret the question as asking, "Give a non-chemistry example of the idea of something losing half of its substance in a given period of time," not "Give a process predicated on the concept of the half-life."
I'll put down radioactive dating, but do me, it doesn't really 'illustrate' it.
This textbook has numerous problems with lucidity in its questions, so I am not surprised.
I interpret the question as asking, "Give a non-chemistry example of the idea of something losing half of its substance in a given period of time," not "Give a process predicated on the concept of the half-life."
I'll put down radioactive dating, but do me, it doesn't really 'illustrate' it.
This textbook has numerous problems with lucidity in its questions, so I am not surprised.
Last edited by nukchebi0 (2008-05-20 21:59:24)
well in that case http://en.wikipedia.org/wiki/Exponential_decay
? it is a weird question.... Maybe give an example of each interpretation to cover your ass?
? it is a weird question.... Maybe give an example of each interpretation to cover your ass?
I used the loss of electric potential in capacitors...thanks especially for the article link.