what i would do is find the mass you do this because you know the density is g / cm3 so just times it by the volume which is 0.5 dm3 (remember to convert it) once you have the mass you can find the mols of ethanol then times that by the enthalpy change im not too sure if I'm right tho
what i would do is find the mass you do this because you know the density is g / cm3 so just times it by the volume which is 0.5 dm3 (remember to convert it) once you have the mass you can find the mols of ethanol then times that by the enthalpy change im not too sure if I'm right tho
Yeah that's what I think too but I don't know how to calculate the mass, sorry for the mess in my working out, but with the converting and stuff it's all confusing 😳
Yeah that's what I think too but I don't know how to calculate the mass, sorry for the mess in my working out, but with the converting and stuff it's all confusing 😳
Ohh okay thanks and then I did that and got moles from it by dividing by Mr and then dividing it by 1000 to put it in KJ but I got 0.16KJ and it doesn't seem right 🤔
Ohh okay thanks and then I did that and got moles from it by dividing by Mr and then dividing it by 1000 to put it in KJ but I got 0.16KJ and it doesn't seem right 🤔
why did you divide the moles by 1000? when you have the moles you times it by the enthalpy change because its Kj/Mol so if you times is by the mol it would leave the Kj
why did you divide the moles by 1000? when you have the moles you times it by the enthalpy change because its Kj/Mol so if you times is by the mol it would leave the Kj
Ohh okay thanks that makes sense, so my answer would be 159.86KJ
what i would do is find the mass you do this because you know the density is g / cm3 so just times it by the volume which is 0.5 dm3 (remember to convert it) once you have the mass you can find the mols of ethanol then times that by the enthalpy change im not too sure if I'm right tho
I am so confused so how do you work it out i dont get it.