Chemistry Problem, Help!!

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10-04-2005, 10:06 PM
smokethedays

Chemistry Problem, Help!!

Ok i have this Chem. problem it sound easy but for some reason i can't get it, it says:
A flask holds a total of 402.5 Grams of water at 293.4 K. What is the volume of the flask?!
P.S. using the Ideal gas law PV=nRT would result in a big unrealistic #.
if you gonna try to convert the 402.5 Grams to moles then here is the molar mass for the water 18.02 g/mol.
thanx in advace
10-04-2005, 10:14 PM
Keyser Sozey

LOL...I couldn't do that for you now if I tried....Fvkkin Horny Goat Weed.
Anyway, just postin' cause it's your thread.
:0chink: <--How I look right now
10-04-2005, 10:16 PM
smokethedays

Quote:

Originally Posted by Keyser Sozey

LOL...I couldn't do that for you now if I tried....Fvkkin Horny Goat Weed.
Anyway, just postin' cause it's your thread.
:0chink: <--How I look right now

lucky ass bastard :wg:
10-04-2005, 10:44 PM
kloter1

a+b=c duh!
10-04-2005, 10:52 PM
symatech

1g is by definition the amount that 1 cubic centimeter of water weighs. your flask is 402.5mL

EDIT: curiously, why were you using the ideal gas law for liquid water?
10-04-2005, 11:04 PM
smokethedays

Quote:

Originally Posted by symatech

1g is by definition the amount that 1 cubic centimeter of water weighs. your flask is 402.5mL

EDIT: curiously, why were you using the ideal gas law for liquid water?

oh shit i'm so dump
10-04-2005, 11:12 PM
smokethedays

Quote:

Originally Posted by symatech

1g is by definition the amount that 1 cubic centimeter of water weighs. your flask is 402.5mL

EDIT: curiously, why were you using the ideal gas law for liquid water?

is that conversion possible?! :scratch:
10-05-2005, 12:22 AM
Billy_Bathgate

Quote:

Originally Posted by symatech

1g is by definition the amount that 1 cubic centimeter of water weighs. your flask is 402.5mL

EDIT: curiously, why were you using the ideal gas law for liquid water?

actually no, at ~20C not 4C so its 0.9982g/ml

so it would be 401.8ml

small, but enough to get the problem wrong
10-05-2005, 10:55 AM
symatech

I stand corrected :)
10-05-2005, 11:39 AM
IronReload04

Quote:

Originally Posted by smokethedays

Ok i have this Chem. problem it sound easy but for some reason i can't get it, it says:
A flask holds a total of 402.5 Grams of water at 293.4 K. What is the volume of the flask?!
P.S. using the Ideal gas law PV=nRT would result in a big unrealistic #.
if you gonna try to convert the 402.5 Grams to moles then here is the molar mass for the water 18.02 g/mol.
thanx in advace

is it an online assignment? if it is, i can assure you it is satan himself in disguise of chemistry. fucking bastards
10-05-2005, 11:43 AM
decadbal

yea, what syma said
10-06-2005, 12:40 AM
Billy_Bathgate

Quote:

Originally Posted by symatech

I stand corrected :)

ya its like..just a small amount, but i would have to think since he gave you a temp that it must be the point of the problem

thats actualy why water is so special, its density is highest at 4C where as most liquids density increases with temp decrease to a solid max

thats why ice floats

good thing or we would have like frozen oceans and shit and it would be a mess
10-06-2005, 02:33 AM
smokethedays

Quote:

Originally Posted by Billy_Bathgate

actually no, at ~20C not 4C so its 0.9982g/ml

so it would be 401.8ml

small, but enough to get the problem wrong

you got it right, u gotta use the Water's Density which is the # you gave at the Equation:
D=M/V
10-06-2005, 08:23 AM
symatech

Quote:

Originally Posted by Billy_Bathgate

ya its like..just a small amount, but i would have to think since he gave you a temp that it must be the point of the problem

thats actualy why water is so special, its density is highest at 4C where as most liquids density increases with temp decrease to a solid max

thats why ice floats

good thing or we would have like frozen oceans and shit and it would be a mess

it had crossed my mind that I was probably off a bit b/c he had listed a temp, but to be perfectly honest, I wasn't about to look up nor did I recall waters density at a given temp. I like to round things sometimes. But water is cool like that, gotta love the H-bonds and whatnot.