At 298 K, 10 ml of methane is subjected to combustion with 40 ml of oxygen. The volume of gases left after the reaction will be
10 ml
20 ml
15 ml
30 ml
CH4g + 2O2g → CO2g + 2H2Ol ; 10ml 20ml 10ml Volume of oxygen remain unused=40ml-20ml; Volume of carbon dioxide formed=10ml; Total volume of gases after the reaction=30ml