A cylinder with a height of 1.30 m and an inside diameter of 0.100 m is used to hold propane gas (molar mass 44.1 g/mol) for use in a barbecue. It is initially filled with gas until the gauge pressure reads 1.4×10^6 Pa and the temperature is 23.0 degrees C. The temperature of the gas remains constant as it is partially emptied out of the tank, until the gauge pressure reads 2.4×10^5 Pa.
Calculate the mass of propane that has been used.
Use 8.31 J/(mol*K) for the ideal gas constant.
2006-06-26 22:29:41 · 8 answers · asked by Sagely 4 in Science & Mathematics ➔ Physics
Propane = C3H8. The molar mass is
(3 x 12 + 8 x 1) gram = 44 gram.
You give 44.1 g. That a little bit better.
The volume of the cylinder is
Ah = pi r2 h = 3.14 x (0.050 m)^2 x 1.30 = 0.212 m3.
Before: pV = nRT
1.4×10^6 Pa x 0.212 m3 = n x 8.31 J/(mol x K) x (273 + 23)K
So n(begin) = 119 mol.
After: pV = nRT
2.4×10^5 Pa x 0.212 m3 = n x 8.31 J/(mol x K) x (273 + 23)K
So n(end) = 20 mol.
Used is (119 - 20) mol propane, being 99 x 44.1 gram = 4.4 kg
2006-06-26 23:56:33 · answer #1 · answered by Thermo 6 · 4⤊ 2⤋
The following & $1.80 will get you a cup of coffee @ Starbucks :o)
Propane = C3H8. The molar mass is
(3 x 12 + 8 x 1) gram = 44 gram.
You give 44.1 g. That a little bit better.
The volume of the cylinder is
Ah = pi r2 h = 3.14 x (0.050 m)^2 x 1.30 = 0.212 m3.
Before: pV = nRT
1.4×10^6 Pa x 0.212 m3 = n x 8.31 J/(mol x K) x (273 + 23)K
So n(begin) = 119 mol.
After: pV = nRT
2.4×10^5 Pa x 0.212 m3 = n x 8.31 J/(mol x K) x (273 + 23)K
So n(end) = 20 mol.
Used is (119 - 20) mol propane, being 99 x 44.1 gram = 4.4 kg
2006-06-27 03:18:35 · answer #2 · answered by DaBrain 2 · 0⤊ 1⤋
Molar Mass Of Propane
2016-10-22 07:46:10 · answer #3 · answered by ? 4 · 0⤊ 1⤋
Do you want the molecular weight of propane? You're questions might make sense to you but even me with Bachelor of nursing science and a science degree under my belt the question is only making partial sense? Is this on a test or something?
2006-06-26 22:46:54 · answer #4 · answered by Sister Sandy (RN) 3 · 0⤊ 1⤋
lets convert this to monetary value, just for fun, and at current market rates in the USA, i would say you have just burnt about $13.85 worth of propane, and you should have a total value of about $ 36.76 left inside for your future B-B-Q needs. have a nice dinner!
2006-06-26 23:02:53 · answer #5 · answered by pingpong 5 · 0⤊ 1⤋
Why should we or I do it? Now let's see you do it and I will give you 20 points. clever clog.
2006-06-26 22:33:59 · answer #6 · answered by Joe_Young 6 · 0⤊ 1⤋
As big as my ***
2006-06-26 22:37:56 · answer #7 · answered by Purple Insanity 1 · 0⤊ 1⤋
Ummmm.....I dnt even know wat the hell ur talkin about!!Sorry!
2006-06-26 22:46:18 · answer #8 · answered by groovyprincess 2 · 0⤊ 1⤋