A compound with the empirical formula SF4 has a mass of 0.100-g at 20.0 degrees Celsius ans 1.02 atm, and a volume of 22.1 mL. What is the gas's molecular formula?
2007-01-10 14:06:54 · 3 answers · asked by Kim L 1 in Science & Mathematics ➔ Chemistry
SF4 is its empirical formula. That same question could be asked - What is the empirical formula of S3F12? Answer = SF4
An empirical formula is the simplest RATIO of the elements which make up the compound. It is basically saying for every 'S' atom, there are 4 'F' atoms. Its only a RATIO!
(1S : 4F)
Oh, forget it. I just read your question.
2007-01-10 14:25:46 · answer #1 · answered by Brendan R 4 · 0⤊ 0⤋
You need to use PV=nRT.
Pressure is 1.02 atm
Temp. is 293 K
Volume is .0221 liters
R = 0.0821
n = PV / RT = 0.000937 moles
so 0.100 g / .000937 moles = 106.7 MW
Molecular Formula is also SF4
2007-01-10 22:26:18 · answer #2 · answered by reb1240 7 · 0⤊ 0⤋
nitric oxide
2007-01-10 22:11:45 · answer #3 · answered by rici2d 2 · 0⤊ 0⤋