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No, it's totally irrelevant. What determines the chiral centre are four groups with different atoms or structures, not with different relative charges.Does it have to do anything with d+ and d- ...
Mole of Ca or mole of H2.and when calculating enthaply change for example in reaction : Ca(s) + 2H2O(l) = Ca(OH)2 (aq) + H2 (g) and u r given Q, which moles do u take from Ca or H2O ?? Thanks so much
I remember that in IGCSE Chemistry textbook the ions consisting of groups of atoms are called molecular ions, like SO4(2-), CO3(2-), NO3(-) and NH4(+). The complex ion is quite similar. Or should we call it "multi-molecular ion"? (Just kidding)it shud not be molecular ion i guess....thats inappropriate word
ur doing 34 and 42?Yes please make a seperate A2 thread for chem
i am done with paper 31 now i have paper 4 leftur doing 34 and 42?
we determine the conc. of fe2+ by titrating with MNO4- ions and the half eqn of MNo4- ions iswhy we acidifiy solution containig fe 2+ ....when trying to dtermine its conc.
did anyone take chemistry p 52? how was it?
umm weird? the first question was.. i didn't know what to write for any of it. And the second was okaydid anyone take chemistry p 52? how was it?
mine too.... didnt do well... especially the first question.... i "tried" to answer the question but not confident...it didn't went too much well and how about yours ??
it was a strange one.. pretty sure they'll get a bunch of weird anwers for that questionsmine too.... didnt do well... especially the first question.... i "tried" to answer the question but not confident...
yea i agree found it weird.... for the second question did you draw a curve or line of best fit? for the relationship between 1/v and p?umm weird? the first question was.. i didn't know what to write for any of it. And the second was okay
No, it's totally irrelevant. What determines the chiral centre are four groups with different atoms or structures, not with different relative charges.
Mole of Ca or mole of H2.
In fact, the equation must first be stoichiometrically balanced (balanced to smallest possible integers), and then calculate the resultant enthalpy change. For example, A and B react to from C and D. Even if the balanced equation is 9A + 11B = 12C + 10D, it is still balanced to smallest integers. Enthalpy change (per mole) is still the total change according to this equation.
So the enthalpy change is more like the change "per balanced equation".
Mine was great! It was really short and quite simpleHow was chem p 22? It was easy and there was 4 questions instead of 5!
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