How many liters of water can be produced from 5.0liters of butane gas at stp, assuming excess oxygen? c4h10(g) + 02(g) → co2 (e) + h2o (g)

You first have to balance out the equation
The coefficients would be 2,13,8,10

So for each mole of butane u have 5 moles of Water.(or for each liter because it’s in STP). Thus 5 liters would give u 25 liters of water. I attached the pic of the more detailed solution. Hope it helps:)

It’s b. mass i searched it up