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does anyone know how many marks question 31 was worth? the one with finding the concentration of chloride ions in the solution with silver

am i the only one that did 14 b) iii like this

how would 67/70 align?

Okay good I got it right then, B and A just both looked so similiar

What did people get for q7 in mc?

There was a super easy way to do that one: let theta = arccos(x) cos(theta)=x draw a right angle triangle with theta as the angle, x as adjacent, 1 as hypotenuse and sqrt(1-x^2) as opposite then tan(arccos(x)) = tan(theta) = opposite over adjacent = sqrt(1-x^2)/x

Anyone know how to do the first part of 14 a)? Only question I couldn't figure out

That what I got as well