AQA GCSE Chemistry Paper 2 Unofficial Markscheme (Higher) - Triple - 12/06/19

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I got 2 3 2 4, i guess both are right

Original post by Hudds999

Yup. I got 1 1.5 1 2

Original post by mannylozano123

5.5 is wrong cause u had to convert 2 minutes into 120 seconds it was something like 0.092

Yeah I did 11/120 (bc 2 mins 120 seconds) I got 0.09 (2sf)

Original post by Khyake

you had to convert mins to seconds, so it was 0.09 something.

Ah crap so it was 0.0975?
Would I lose all the marks then

Original post by dibjeye

i got 2900cm3

I got 2900cm^3 looollll but I didn’t use any equations

Apart from stupid mistakes, think that boundaries will be much higher, probably 80 for a 9 on that paper .

You can’t have a half a mole

Original post by Hudds999

Yup. I got 1 1.5 1 2

Original post by himohareem

I got 2900cm^3 looollll but I didn’t use any equations

Same I got 2900 using v=24mole

Original post by imogen28

I got 2886.4 for the volume but I’m not convinced that’s right :lol:

:lol:

I got that too!!

Anyone get 2.25 times higher yield for the ammonia one ?

Original post by himohareem

Anyone get 2.25 times higher yield for the ammonia one ?

Ye

More importantly, WHY THE BLOODY HELL WERE MOLAR EQUATIONS IN PAPER 2?!!
Nobody told me this would happen for ****s sake like.

username3046474

Original post by himohareem

Anyone get 2.25 times higher yield for the ammonia one ?

Yup

username3046474

Let's discuss answers other than the calculations? Thanks!

Original post by Larawhimore24

You can’t have a half a mole

Why not? Don’t discriminate against the molar population.

This is how I did it?

Original post by ShyB

Let's discuss answers other than the calculations? Thanks!

For the first questions on why the buterene (or whatever it was) wasn’t useful as a fuel: I said bc it’s too long so it’ll combust incompletely and it’s not volatile enough to be a fuel

terrible I think I did well bad but I answered all the questions chemistry paper 1 was better but biology paper 2 was good.

What was the answer to the percentage of lithium carbonate question because I didn’t know if micro grams was divide by 100 or divide by 1000 but I think I got 58.3% ?

username3046474

Original post by Ashstudent1

What was the answer to the percentage of lithium carbonate question because I didn’t know if micro grams was divide by 100 or divide by 1000 but I think I got 58.3% ?

Same! I didn't know so I ended up dividing by 1000? Is that correct?

I said releases little energy when burned and releases carbon monoxide during incomplete combustion which is toxic

Original post by himohareem

For the first questions on why the buterene (or whatever it was) wasn’t useful as a fuel: I said bc it’s too long so it’ll combust incompletely and it’s not volatile enough to be a fuel

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