Question

calculate the volume of oxygen required for complete combustion of 0.25 mole of methane at STP

Answer 1

Hi thank you for asking the question 
Methane is represented by CH4 and a=have moleccular mass of 22.4
when methane is burned following reaction takes place 
CH4 + 2O2:::::>  CO2 + 2H20 '
In this reaction one mole of methane needs two moles of oxygen to be completely burned 
for 0.25 moles we can calculate as;
=0.25*22.4*2
=11.2 Liters 
hope this answer helped you 
If it did kindly mark the answer as brainliest. Thanks

Answer 2

HEY MATE ..

REFER THE ATTACHMENT.

HOPE IT HELPS.✌️✌️