edexcel i love u
answers:
for section A
it was
ampere second
compression was higher and higher
it was minimum since destructive interference
1/4
1.5-0.7/1.8x10^-2
R decreases, n increases
im missing 4 questions pls send them here if u remember
section B
3000W
81 ohms
4.3N
4.8x10^-10
and i totally forgot the rest
i got
area 2.14
volume 12.1
area for circle question was 25pi/2+8
last question was x=89.6 i think something like that
remainder was 2
quotient was idk but good
question 2 both could be geometric and series u3 in arithmetic is -15 i think and geometric u3 was -12 and the second part was 39
proving part a was 5 substitution instead of x
part b i wrote since discriminant is less that zero so no real roots so always more than zero idk
the binomial was 1+25/8+1126/256
and second part was k=1024
the last part i didnt know
if u have other questions and answers send here
study exponential graphs the stretch and compress and how to draw them and be careful if the coefficient is between 1 and 0 or more than 1
know how to do draw a table for the trapezium rule if they for example state that use the trapezium rule with four equal strips and stop there
memorize log laws theres definitely some bad questions
know how to prove sums of geometric and arithmetic series theres 2 equations for arithmetic and 1 for geometric.
also last thing SOLVE may 2024 the R paper, may 2025 the A paper, october 2025 and jan 2026 the A papers also theyre relatively harder and are helpful.
also theres a geometric series question in 2025 october the normal paper part c i found it somehow hard idk just go over it if u want and good luck everyone
guys okay can we discuss this because i think i lost so many marks here and im scared
the ionic equation i got it wrong since i put B and the london forces breaking i put diamond which is also wrong
the answers were student 3 and student 1
4 isomers
chloromethane
carbon dioxide
the last question was D
low molar mass
pressure decrease and equilibrium shifts left
redox reaction was the hydrogenation of the alkene(A)
enthalpy change of rxn didnt need always 1 mol
if anyone remembers the rest pls send those are 12 out of 20 theres 8 i cant remember
guys how was it i saw section a harder then section b and c discuss answers
i got
10cm3s-1
0.173g
0.0153moldm-3
-363kJmol-1
-4625kJmol-1