Methane gas is diffusing in a straight tube 0.1 m total pressure of 1.01325 x 105 pa. the partial pressure of ch4 at one end is 1.400 x 104 pa and 1.33 x 103 pa at the other end. helium is insoluble in one boundary, and hence is non- diffusing or stagnant. the diffusivity coefficient is 0.675 x104 m2/s. calculate the flux of methane in kgmol/m2.s at steady state long containing helium at 298 k and a

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.

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest