Hi Alistair, My bad... I adapted a calculation starting with 96g of propane, not 454g as I stated in my post. I guess that's what happens sometimes when you do math at 3AM. It's been quite a while (a couple decades) since I did highschool chemistry. Thanks for straightening that out.
Happy Trails, Greg Potts 1973/74/77/79 Westfakia "Bob The Tomato www.pottsfamily.ca www.busesofthecorn.com
On 16-Jan-08, at 11:04 AM, Alistair Bell wrote: > are you sure? > > one pound propane = 10.3 moles (mw propane approx 44g) > > one mole propane produces 4 moles H2O, which weighs 76 g (76 ml) > > 1 pound propane = 10.3 moles propane = 760 ml H2O. > > see? > > alistair > > > > On 16-Jan-08, at 2:52 AM, Greg Potts wrote: > > Hi Roger, > > I did the chemistry on that last year, as I was interested in just > how much water was produced. > > C3H8 + (5)O2 --> (3)CO2 + (4)H2O > > According to my calculations, a 1lb bottle of propane produces 76 ml > of water (less than three ounces), with the remaining byproducts > emitted as CO2 gas. See this page for details: > http://www.sparknotes.com/testprep/books/sat2/chemistry/ > chapter7section3.rhtml > > A human being exhales 2-4 cups of water per day, depending on the > relative humidity. Divide that by 3 (8 hrs sleeping in the westy) and > you still get a LOT more water from a human than you do from a > propane heater. > > Happy Trails, > > Greg Potts > 1973/74/77/79 Westfakia "Bob The Tomato > www.pottsfamily.ca > www.busesofthecorn.com > > On 16-Jan-08, at 1:29 AM, Roger Whittaker wrote: > >> if you have a propane heater that you wish to use during the night >> remember that propane heaters produce lots of water as a byproduct of >> combustion >> this will make the underneath of foam cushions where you sleep >> damp ... >> also make sure you have enough ventilation ... > |
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