17:1 for a mixture of 50% propane and 50% butane. propane-butane percentage differ from country to countr, so aslo the air to fuel ratio is a little diferetn.
LPG
No, LPG fuel is not renewable. This is because LPG (Liquid Petroleum Gas) is recovered from the natural gas in oil wells, and since oil is not renewable neither is LPG.
You cannot
No, LPG is a natural gas recovered from oil wells
Aluminium
LPG or Liquid Petroleum Gas is a fuel, not a car. Pretty much ANY motor vehicle that is powered by an engine that burns fuel can be powered by LPG.
lpg powered engines have following most important components lpg tank multivalve ( safety valve) copper tube lpg solenoid valve petrol solenoid valve vapouriser/regulator air/fuel mixer change over switch injector cable immulator (in case vehicle is multipoint fuel injection) lambda control system( close loop )
Yes LPG in gas phase is heavier than Air.
I Think it will be combustible, depending on the lpg-oxygen ratio. In some cases, it explodes
For a comparison with methane see the link below. LPG is not considered as an ideal fuel, the ideal don't exist.
Yes