chem question

[ManBearPig]

uh...

when using c=gamma*nu and E=h*nu do i have to put everything in meters?

Do your own homework.

AnandTech Moderator

 

[imported_Tick]

It depends on what C you use, amd what units you want out. But you do need to use the same units throughout.

 

[Evadman]

If you are not part of the solution you are part of the participate.

 

[soydios]

All the units should match up. If you put wavelength in meters, you need to put the speed of light in meters. If wavelength is nanometers, speed of light should be nanometers (10^9 times bigger than with meters).

 

[ManBearPig]

If one atomic mass unit is equal to 1.6606 x 10-24 g, what is the mass in grams of 19145 atoms of Cu?

Each molecule of CH4, methane, consists of 1 atom of C and 4 atoms of H. If you have 296.098 g. of CH4, how many molecules of CH4 do you have ?


help 🙁

i dunno what to do anymore

 

[Gibson486]

man, i would....but i absolutely hated chem is college (it was fun un high school).

 

[ManBearPig]

unless im typing it in wrong im a friggin retard

 

[ManBearPig]

buuump 🙁

 

[Fenixgoon]

Originally posted by: Heen05
unless im typing it in wrong im a friggin retard

if this stuff is challenging you now.. you = fuxed.

fwiw,

19145 atoms of Cu * 63 amu per atom * 1.6606x10^-24 g per amu.

methane = 16 amu, or 16 g/mol. 296.098g / 16g per mol = X mol * 6.022x10^23 molecules per mol