19.08 g stored in a 3.82 L container at 3632 mm Hg and 100degrees C?
1. H2
2. Br2
3. F2
4. O2
5. not enough info.
If you know the answer, can you plz explain the formula ?? thanks
2006-06-14 08:10:21 · 4 answers · asked by who? 1 in Science & Mathematics ➔ Chemistry
PV = nRT
PV = g/MM * RT
MM = gRT/PV = 19.08 g * 0.08206 * 373K/ (4.78 atm * 3.82 L) = 32.0 g/mol
The answer is 4, as the gas is oxygen.
2006-06-14 08:15:15 · answer #1 · answered by TheOnlyBeldin 7 · 1⤊ 0⤋
An alternate method would be to compute the volume at STP, then divide by 22.4 L/mol to find moles, then divide 19.08 g by this value of moles to get molecular weight.
2006-06-14 18:50:00 · answer #2 · answered by rb42redsuns 6 · 0⤊ 0⤋
i agree it's O2. play with the algebra behind the equations and be able to rearrange them at will and you'll be in good standing.
2006-06-14 15:32:18 · answer #3 · answered by shiara_blade 6 · 0⤊ 0⤋
oxygen is right #4 = 15.9994
2006-06-14 15:25:38 · answer #4 · answered by lone 2 · 0⤊ 0⤋