Posts by Rossi
Total # Posts: 9
what is another form of: sin (A+B) sin (A-B)/ cos^2 A cos^2 B a) cos^2 A - cos^2 B b) tan^2 A - tan^2 B c) tan^2 A - tan^2 B d) sin^2 A - sin^2 B please show the steps you take to get to the answer! thank you
If cos theta= -sin theta, then sin^2 theta is? a) 1/4 b) 1/2 c) sqrt2/2 d) - sqrt 2/2 please show me how you got the answer! thank you!
what is the exact value of sin^2 pi/6-2 sin pi/6 cos pi/6 +cos^2 (-pi/6)? a) 2- sqrt 3 b) 2- sqrt 3/ 2 c) 2+ sqrt 3/2 d) 2+ sqrt 3 I am not sure how to work this out and would appreciate you how to show me the process. Thank you in advanced!!!!!!!
He has to jump 9.81/2 = 4.905 meters Since we are told his maximum jump is only one meter then the claim is false. answer is 4.9 m
How do I determine which molecule of each pair has the largest dipole moment? case one: CO and NO case two: SF4 and CF4 I have to use their electronegativities, right? For linear molecules, such as CO and NO, yes, use electronegativity. For non-linear molecules, such as SF4 ...
I am a freshman in college and this is the first time I have received help over the internet. I have been using this site for a couple of days now and all I have to say is that this site is great! I would like to say thanks to all the "helpers"! We are here to help. ...
Why is this phrase, Lewis Structure a misnomer? I've googled it... and I can't seem to find an answer. Any suggestions as to where I can read some info on that? Lewis implies ionic bond, structure implies fixed covalent bonds. Screw you, that's simple
In the ground state of element 115, how many electrons have ml=1 as one of their quantum numbers? Can anyone provide an explanation? I am kind of stuck... and I don't think it is too hard, I just don't know where to start. Thanks ahead of time... Go to www.webelement....
It takes 208.4 kJ of energy to remove 1 mole of electrons from an atom on the surface of rubidium metal. What is the maximum wavelength (in nm) of light capable of removing a single electron from an atom on the surface of rubidium metal? Ok, I know I have to find how many kJ ...