How much cubic gas does a kilogram of LPG produce?

How much cubic gas does a kilogram of LPG produce?

1.4 m3 (standard condition)
First, 1000 grams of CH4
That is 1000 / 16 moles
Volume 1000 / 16 * 22.4l
Conversion 1000 / 16 * 22.4/1000 M3