Posted by VICKY on Tuesday, November 23, 2010 at 9:38pm.
Use PV = nRT to solve for n = number of moles. Don't forget that T is in Kelvin.
Then n = grams/molar mass
You know n and grams, solve for molar mass.
so all the units i have to change is just for temperature and then leave the rest as they are
No. T is in Kelvin.
P is in atmospheres.
V is in L.
Use 0.08206 L*atm/mol*K for R.
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