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OHHH its cause thats how many molecules of the substance there is in one mole so they're finding the number of monomer molecules in the 0.001735mol which gives the answer

btw for those polymer questions where they ask you to calculate the molar mass of a condensation polymer, you have to subtract n-1 number of water molar masses, where n is number of monomers not n water's, because 2 monomers join to form 1 water, so there's 1 less water.

yeah there's a missing step there coz they just go from moles to monomers without any in-between step. The writing is pretty bad also ngl

There might be a mistake in the question because they haven't told you the molar mass of the sample or the moles so it would be impossible to find the number of monomers

k thanks coz I always either get one higher or one lower than the answer haha, they're so time consuming

Does anybody have any tips on questions asking how many isomers of a compound there are. I always get them wrong haha

Not specifically I don't think (like we don't have to know specific biopolymer's structures), but it would be good to know just a few properties just in case

oath haha

if you say two people see something moving the same distance in the same amount of time isn't that saying that they see that object moving at the same speed?

I got C but tbh I had no real explanation haha

-log (4.3*10^-3) = 2.367 = 2.36 to 3 sig figs. It it was pH, it would be to decimal places not sig figs i.e. 3 sig figs is 13.000 for pH not 13.0

I said that model x assumed that as wavelength decreases intensity increases whilst model y assumed that the energy abosrbed and emitted by a blackbody cavity is quantised

that means -log (4.3*10^-3)

Biden won lads

ikr

Not really too dependent on rankings like I got 95 in 2u maths with rank 11 and 96 in 3u with rank 5 or 6. More dependent on how your cohort is overall

Hope everyone's ready for a 6 mark cycad question

how people feeling for chem

I think I forgot to put an answer for q18 RIP

I got Q16, 17, 18, 20 wrong damn