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Help me with my basic Chemistry HOMEWORK

Started by strongbad, October 16, 2008, 05:14:55 PM

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strongbad

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

j o e i n c


strongbad


[REDACTED]

you are pak
also sir
the atomic mass- the molar mass- is needed to convert from mass to moles
I do not have HIV/AIDS.

strongbad

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;

Daddy


strongbad


[REDACTED]

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 KMNO4/whatever its atomic mass g/mol = # of moles of KMNO4
I do not have HIV/AIDS.

Daddy

1
A
14.6 g
------   =                 .0924 mols
158.04 g/mol

Daddy

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.

[REDACTED]

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

I do not have HIV/AIDS.

Daddy

if you're going count fluorine as diatomic then it's .11476 grams

strongbad

yeah, i need to know diatomic and stuff
thanks guys


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