Ok, so I was absent a few days ago when we learned about mass, moles, molecules, and atoms, and I have no clue how the fuck to convert them to eachother, aside from atoms=mcls*2 which is pretty fucking basic. I also know that to get from moles to mcls you have to do something with 6.02*10^24 or something.
And we have a quiz tomorrow. And I had a tennis match during after school help.
So, if you could do a few problems for me, and explain how to do it step by step, I would be really happy.
1: Give 14.6 g of KMnO4, find:
a)moles
b)molecules
c)atoms
2: Given 0.00302 moles of fluorine, how many grams, molecules, and atoms are present.
THANKS BOYAH
(http://img520.imageshack.us/img520/1511/mulpc9.png)
ur dumb
you are pak
also sir
the atomic mass- the molar mass- is needed to convert from mass to moles
Quote from: Ethereal on October 16, 2008, 05:19:04 PM
you are pak
also sir
the atomic mass- the molar mass- is needed to convert from mass to moles
well those are right off of my homework baddood;
avogardo's number is 6.02X1023
ok I was only off by one digit
now halp
Quote from: the guy with the $5000 suit on October 16, 2008, 05:25:02 PM
ok I was only off by one digit
now halp
a
14.6 g KMNO
4/whatever its atomic mass g/mol = # of moles of KMNO
4
1
A
14.6 g
------ = .0924 mols
158.04 g/mol
and there are .05738 grams of fluorine.
i forget how to do the rest.
also fluorine is an element i don't think you should have to find the molecules in it.
Quote from: Khadafi on October 16, 2008, 05:41:37 PM
and there are .05738 grams of fluorine.
i forget how to do the rest.
also fluorine is an element i don't think you should have to find the molecules in it.
also remember, fluorine is diatomic
if you're going count fluorine as diatomic then it's .11476 grams
yeah, i need to know diatomic and stuff
thanks guys