Methane and oxygen mixture at 40° c is fed into the combustion chamber at a flow rate of 26.5 kg/h. the mass fraction of methane in the mixture is 0.2 and all the methane is burnt. the molecular weight of methane is 16 kg/kmol. the reaction is exothermic with -5000 kj/mol enthalpy of reaction. taking 25°c as the reference temperature and assume zero enthalpy at the reference point, calculate the temperature of the gas stream leaving the combustion chamber thermal properties: of the gas stream entering the combustion chamber: 2200 kj/kg. k co of the gas stream leaving the combustion chamber: 1800 kj/kg. k

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.

sure im new too!

explanation: