Recent content by desmond iking

well , i found the ans. thanks for pointing out my error. i 'd been thinking of this question few days...OMG! (101x10^3)(22400X10^-6)= (1.75X24/MRR)(8.31)(273+27) So MRR = 46 , which is C3H6 . tHANKS!

So what is the correct one to be substituted into the equation to get the ans?

22.4litre. Which is also equal to 22400m3

Ya , I checked it. 22400m cube

22400m^3 ?

i was told that the phenyl exerts positive inductive effect? why the phenyl isn't exerts negative inductive effect?

24000m^3

24000m^3 R = 8.3145 J/mol·K , which part i did wrongly?

i am just having problem with the two of the question , NOT ALL...

well , the ans for tartraic acid acid is 2,3-dihydroxybutanedioic acid... i am wondering why not 2,3-dihydroxy-1,4-butanedioic acid... Why the 1, 4 is not needed?

Homework Statement As in the photo Homework EquationsThe Attempt at a Solution i need ans for this whole question . my ans for part i ) is oxalic acid - dicarboxlic acid tartaric acid - 2,3-dihydroxo-1,4-dicarboxlic acid . for part c ) I used dilute KMNO4 to differentiate these 2 compounds ...

Homework Statement i was told that the the ascending order of the compound undergo SN1 reaction is C6H5CH(Cl)CH3 < (CH3)3 CCl < C6H5C(CH3)2 Cl... it's a past year question . I am sure tha ans is correct. Can someone explain why? Generally , the most reactive is the compound (CH3)3 CCl , Am i...

Homework Statement Combustion of hydrocarbon X in excess oxygen produces 0.66g of carbon dioxide, and 0.27 g of water. At room tempertaure and pressure , X is a gas with density 1.75gdm^-3 . What could the molecular of X be? What is the ans ? i only managed to get the empirical formula is CH2...

Homework Statement I can't understand why the vector MA finally become (i+j+k) ?? is it beacuse of (i-j ) becomes k ?? Homework EquationsThe Attempt at a Solution

I noticed that theF(X , Y) is the outcome of the addition of the last two. *correct me if I m wrong* , why it only involve the addition of last two term? Why not also the first two terms??