amount of heat released when acetylene burns with oxygen, producing carbon dioxide and water. First, write a balanced equation for the combustion of acetylene in oxygen. Then, how many grams of acetylene are needed for the complete combustion of 784 grams of oxygen? How many carbon dioxide molecules are formed in this reaction? please explain
2007-05-03 21:06:45 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
C2H2 + 5/2 O2 --> 2CO2 + H2O
784 g O2 x (1 mole O2 / 32 g O2) x (2 mole C2H2 / 5 mole O2) x (26 g C2H2 / 1 mole C2H2)
=254.8 g C2H2
254.8 g C2H2 x (1 mole C2H2 / 26 g C2H2) x (2 mole CO2 / 1 mole C2H2) x (6.022 e23 molecules / 1 mole CO2)
= 1.18 e25
2007-05-03 21:18:55 · answer #1 · answered by Anonymous · 0⤊ 0⤋
undesirable, i used to weld and its the worst activity on earth. ask a welder a pair of welders flash, worse than childbirth, you awaken at 3 am blind, looks like a brick on your eye , the only medical care is time so which you attempt to doze off in ache
2016-12-17 03:43:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋
2C2H2 + 5O2 → 4CO2 + 2H2O
2C2H2 → 52 amu
5O2 → 160 amu
4CO2 →176 amu
2H2O → 36 amu
x/52 = 784/160
x = 254.8 g
y/176 = 784/160
y = 862.4 g
Ny = 862.4(6.022*10^23)/44
Ny = 1.180312*10^25 molecules
2007-05-03 21:39:36 · answer #3 · answered by Helmut 7 · 0⤊ 0⤋
Do your own homework, kiddo.
2007-05-03 21:11:31 · answer #4 · answered by Anonymous · 0⤊ 0⤋