[Gweedo8]

A 2.00g sample of SX6(g) has a volume of 329.5mL at 1.00 atm and 20celsius.  Identify element X.  Name the compound.

So this is the math that I am doing and something is wrong:

=PV/RT

(1x.3295L)/(.0182x293)=.06179 mol, then I multiply that by the mole mass (2g) and get .12358mm, at this point I want to subtract the mass of S which is 32.065 but that leaves me with  a negative number???

Can anyone tell me where I am zigging when I should be zagging?

[sjb]

Can you check your units? I don't recognize the value 0.0182 for the gas constant.

http://en.wikipedia.org/w/index.php?title=Gas_constant&oldid=296841161

Also, if you have a number of moles and a mass, mass / moles = molar mass, not mass * moles.