What's the need for placing a 2 before the Fe?
How is it -1.18V?
Why is it not 2.00-0.80?
Why is the amount of Fe²⁺ in the second titration equal to the amount of Fe²⁺ and Fe³⁺ in the original solution?
FREE ADVICE FROM A* LEVEL STUDENTS
Why would E cell being positive make the concentration of the product decrease?
Why not Cu²⁺?
How do they know the unit is cm⁻¹?
Why is the overall charge -2 for a manganate 6 ion but -1 for a manganate 4 ion, when they both look like MnO₄?
How did they find the total time to be 11s here? I also want to know how they found 1.5s.
How to know if this question is asking for power in or power out?
Why did they find the value of the coordinates if it's asked to find the equations?
Why does it not work to just use distance÷speed and then speed÷time on this question?
IAL Chemistry Unit 1 WCH11/01 October 2023
Why was sin(2x) here substituted with -1 instead of 1? It's asking for maximum.
How to solve (b)i)?
How did they solve this one? And can the formula I wrote be used here?
How do you know which one is E(oxidation) and which one is E(reduction)? Aren't they both being reduced?
Why did they only consider low mass stars for this question?
Why is k>3.6 instead of <3.6?
If I use 396.5 and 396.9, I get -3.02×10⁵ ms⁻¹. Would that answer still be okay?
Why are the kinetic energy of heavy nucleus negligible?
Why is GM/r being used twice for part (ii)?
