On Oct 30, 12:19*am, "Dave Liquorice"
wrote:
On Thu, 29 Oct 2009 23:39:21 GMT, Harry Bloomfield wrote:
They need good ventilation and yes they do produce lots of vapour.

Each kg of gas burnt produces a kg of water.

Interesting, I hadn't thought of it like that. In fact, it makes more
than 1kg of water:

C3H8 + 5 O2 = 3 CO2 + 4 H2O

propane has Mol Wt. 44
4 H2O has Mol Wt 4* 18 = 72

So 44 grams of propane make 72 grams of water

So 1kg propane makes 72/44 = 1.6 kg water

Robert