Education

I have no idea how to do this, can some one explain to me step by step? Start out by letting x = arcsin(5/13) so that sin(x) = 5/13. Then, we wish to find: cos[2arcsin(5/13)] = cos(2x). Using the double-angle formula for cosine, we have: cos(2x) = 1 – 2sin^2(x) = 1 – 2(5/13)^2, since […]

H2 + I2 —> 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI 2HI

I’ve Googled this before and I read that fish don’t have eyelids, therefore they can’t blink. But when I had my goldfish (there were five) I saw two of them blink on four occasions put together. I know this because I would sit in front of their aquarium and watch them swim around, eat, etc.

Which pair of compounds will form a buffer in aqueous solution? HCN and NaCN HCl and NaOH NaCN and NaOH HCN and HCl HCl and NaCl NaCN and KCN General guidance Concepts and reason The concept used to solve this problem is that a buffer is formed by the combination of a weak acid and

Provide the correct IUPAC/systematic name for the following compound? Provide the correct IUPAC/systematic name of the following compound. 2 3

An open organ pipe (i.e.. a pipe open at both ends) of length L_0 has a fundamental frequency f_s If the organ pip is cut in half what is the new fundamental frequency? After being cut in half in partA the organ pipe is closed off at and what is the new fundamental frequency? As,

9. Which of the following solutions has the greatest buffering capacity? [A] 0.243 M HF and 0.192 M NaF [B] 0.485 M HF and 0.383 M NaF [C] 0.970 M HF and 0.766 M NaF [D] 0.160 M HF and 0.126 M NaF [E] They are all buffer solutions and would all have the same

I want to know the meaning of the title of Kansas’ song. The closest thing I found was a Star War planet called Belex, but I honestly don’t think it has something to do with it… Belex is Smart Viper Statistics Mashups. http://wn.com/Kansas__Belexes http://www.lyricsmode.com/lyrics/k/kansas/belexes…. Since “Belexes” came out long before STAR WARS, I think the

DNA The next is proteins RNA leaves the nucleus to be translated into protein by the ribosomes. DNA isn’t normally found except in the nucleus. DNA is your answer. Nucleic acids that make up DNA and RNA.