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spring rush starts up lots of house plants will be making their way to garden centers and the local grocery store I ve written about the damage ethylene gas can cause plants in transit

Fruits & Vegetables Can Now Retain Their Freshness

unknown

Fri, 23 Oct 2009 03:53:03 GM

In the case of peaches, . ethylene. causes them to ripen, increases aroma chemicals, but unfortunately, makes the peach very fragile. "If you've seen ripe peaches, they will simply fall apart," says Pierce. ...

What percent of the sample is ethylene?
Q. A 5.00g sample of a natural gas, consisting of methane (CH4) and ethylene (C2H4), was burned in excess oxygen, yielding 12.5g CO2 and some H2O as products. What percent of the sample is ethylene? The equations for the reactions are: 1) C2H4 + 3O2 ---> 2CO2 + 2H2O 2) CH4 + 2O2 ---> CO2 + 2H2O Thanks in advance!
Asked by miss nami - Thu Jan 3 07:31:15 2008 - - 2 Answers - 0 Comments

A. Molar mass CH4 =16.043 g/mol Molar mass C2H4 = 28.054 g/mol Molar mass CO2 = 44.01 g/mol moles CO2 = 12.5 g / 44.01 = 0.284 let x = grams CH4 and let y = grams C2H4 x + y = 5.00 x / 16.043 + y / 2 x 28.054 = 0.284 x = 5.00 - y 5.00 - y / 16.043 + y / 56.11 = 0.284 280.5 - 56.11 y + 16.043 y = 255.6 40.067 y=24.86 y = 0.620 g % = 0.620 x 100 / 5.00 = 12.4
Answered by Dr.A - Thu Jan 3 08:14:01 2008