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I am not sure about that one too ... but MgO only dissolves slightly in water and apparently, SiO2 mp/bp is lower than that of MgO givenView attachment 57505
please explain why P is MgO... isn't MgO supposed to be soluble and ionic compounds conduct in aqueous sol..?
It will replace H of OH only.
Can u please explain your working? It's going over my head
I used trial and error.Can u please explain your working? It's going over my head
kayy!! thanks bro!I used trial and error.
I tried option A, didnt satisfied the answer, but B did. Sth like this;
Initial moles of 2P : 2
IM of 2Q and R : 0
Equilibrium moles of R : x
EM of 2Q is x/2 (1:2 ratio)
EM of 2P is 2 - x/2 (1:2 ratio and IM was 2 so we will subtrct x/2)
So addition of EM = 2 - x/2 + x/2 + x = 2 + x
sorry didnt get uhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w12_qp_12.pdf
q:17 ... why can't i just cross multiply the number of moles for M? and then use n=mass/Mr to find Mr?
why does it give a different answer?
View attachment 57506
i have replied to you on the other thread .. well, above all, ask Allah to help you remember and stay confident, you will do well iA.any tips to remember the organic reactions? anyone plz! ..I often mix them up
The concentration increases with time. At first, it rapidly increases as there are more reactant molecules so more frequent collisions and then it slows down, gradually stopping as reactants decrease and is eventually used up.
Thank youThe concentration increases with time. At first, it rapidly increases as there are more reactant molecules so more frequent collisions and then it slows down, gradually stopping as reactants decrease and is eventually used up.
solve what?I will solve after sometime
The remaining doubts re !!solve what?
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