Could anyone quickly summarise how you know which salt making method to use? I know the mixing/stir/filter one is two soluble salts to make an insoluble salt, but for the others, how do you know whether to use a titration or the other method?
could anyone help me out with explaining this: (general topic of polymerisation, additional polymerisation etc. The question itself made me go whaaaaat? and I just guessed because it's better than a blank amirite the Gold is me marking and my expression of ~woe~ THANKS IN ADVANCE I REALLY NEED HELP >.< )
could anyone help me out with explaining this: (general topic of polymerisation, additional polymerisation etc. The question itself made me go whaaaaat? and I just guessed because it's better than a blank amirite the Gold is me marking and my expression of ~woe~ THANKS IN ADVANCE I REALLY NEED HELP >.< )
You've just drawn the propene molecule out when its basically asking you to draw two monomers joined together like in the diagram shown above it. It wants to see that you understand that the C-C double bond is broken to allow more monomers to join.
could anyone help me out with explaining this: (general topic of polymerisation, additional polymerisation etc. The question itself made me go whaaaaat? and I just guessed because it's better than a blank amirite the Gold is me marking and my expression of ~woe~ THANKS IN ADVANCE I REALLY NEED HELP >.< )
All it wants to see if the repeat monomer unit drawn out twice, the ms shows the CH3 in different orientations but they could be the same side.
You've just drawn the propene molecule out when its basically asking you to draw two monomers joined together like in the diagram shown above it. It wants to see that you understand that the C-C double bond is broken to allow more monomers to join.
thank youuu I get it now, I was just being a bit blind hahah
for those who did the double award edexcel igcse chemistry today, did u guys put carbon dioxide as a compound of unpolluted gas?
Yes. I put CO2, I thought of putting O2 but then it said compound so CO2 was the only viable answer since it's the only compound in air (argon, oxygen, nitrogen are elements). Other people put H20 though, not sure if that's right?