What is the energy released when 0.24kg of methane is completely burnt in oxygen

Meth­ane is a gaseous com­pound with the chem­i­cal for­mu­la of CH₄. Meth­ane has no smell or taste, and is a non-tox­ic sub­stance. The flamma­bil­i­ty lim­it of the gas is a con­cen­tra­tion in air from 5 to 15%.

Meth­ane is the sim­plest rep­re­sen­ta­tive of the alka­nes. This group of or­gan­ic com­pounds is called sat­u­rat­ed or paraf­fin hy­dro­car­bons.

They have a sim­ple bond be­tween the car­bon atoms in the mol­e­cule, and the oth­er va­len­cies of each car­bon atom are sat­u­rat­ed with hy­dro­gen atoms.

The most im­por­tant reaction of alka­nes is com­bus­tion. Alka­nes burn with the for­ma­tion of wa­ter vapor and gaseous car­bon diox­ide. As a re­sult of this re­ac­tion, chem­i­cal en­er­gy is re­leased in huge quan­ti­ties, which can be trans­formed into elec­tri­cal or ther­mal en­er­gy.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.