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It's on here:does anyone know when the oct/nov 2015 grade threshold will be available?
thanks
http://papers.gceguide.com/A Levels/Chemistry (9701)/9701_w15_gt.pdf
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It's on here:does anyone know when the oct/nov 2015 grade threshold will be available?
thanks
b(i) the eaquation says 3Cl-http://www.cie.org.uk/images/164950-2016-specimen-paper-4.pdf
Q 6
b(i) what's the cycle? why multiply into 3?
(ii) how to understand that the reaction forms both FeCl2 and CuCl2?
please help...
You are asked to write electronic structure for Fe and Fe3+. [Ar] means Electronic structure of argon, so u need to write electronic structure of Fe and Fe3+ after 3p6Can someone pls explain what this question is asking?
View attachment 58909
It's asking the electronic structure.You need to complete the configuration.Can someone pls explain what this question is asking?
View attachment 58909
o.o same timeYou are asked to write electronic structure for Fe and Fe3+. [Ar] means Electronic structure of argon, so u need to write electronic structure of Fe and Fe3+ after 3p6
You are asked to write electronic structure for Fe and Fe3+. [Ar] means Electronic structure of argon, so u need to write electronic structure of Fe and Fe3+ after 3p6
It's asking the electronic structure.You need to complete the configuration.
You know that Fe has 26 electrons.And Fe 3+ would mean it has 3 electrons less which is going to be 23.
Argon has 18 electrons.You need to write your answer after that Argon one.
So it'll be like this:
Fe -> 4s2 3d6 (26 electrons,the 18 of argon plus the 8 to get the 26)
Fe3+ -> 3d5 ( see 3 less)
Welcomeohk thanks a lot
https://www.xtremepapers.com/commun...st-your-doubts-here.9859/page-753#post-950818http://www.cie.org.uk/images/164950-2016-specimen-paper-4.pdf can someone please explain how to calculate the rate in order to [H+]? Q:2, b
could you explain 2(b)(iv) also from that paper?
When I solve it then In sha Allah.could you explain 2(b)(iv) also from that paper?
When I solve it then In sha Allah.
nehaoscar have you done this?
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