Math
5.7x10^9 5.9x10^-8
chemistry
please explain why the gem-dimethyl groups appear as separate peaks in the proton NMR spectrum of isoborneol although they almost overlap in borneol
Chemistry
In the experiment Nitration of Methyl Benzoate why is it important to add the nitric acid-sulfuric acid mixture slowly over a 15 minute period?
Chemistry
why is it important to add the nitric acid-sulfuric acid mixture slowly over a 15 minute period?
s.s.
I'm am going to assume this is supposed to be answered from your book. Check your book first, and if you can't find it there, you could google it.
pre-Algebra
divide both sides by 5 to get x by itself
Statistics
sd=standard deviation
english
The number of active movie screens--that is, screens showing films or booked to do so--is higher now than at any time since World War II. You do this because you are defining active movie screens and showing the info is not necessary.
science
A Punnet square is a table that shows what traits two parents (or first generation species) have and the possible outcomes the offspring will have. You can tell the chances of getting certain genes are. I'm not quite sure how to make an example on here, but that's the ...
Elimination method
Try to get rid of the r first. Multiply the top row by -5 and the bottom row by 2. solve for s. Get rid of the s next, multiplying the top by 2 and the bottom by 5. solve for r. There should be a solution.
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