AQA AS-level Chemistry 2020 Paper 1 (first half) walkthrough

AQA AS-level Chemistry 2020 Paper 1 (first half) walkthrough

[parisasafdari]

At 17:15 I think there is a mistake with a calculation error when you do 84/6.022x10^23 it is 1.39..x10^-22, and when you divide it by 1000 shouldn't it be to the power of -25, not -24?

[ns]

Please don’t stop doing these I’m going through all your aqa paper videos for my exams in 2 months. Also if you run out of past papers please consider going through sub topic exam questions and explaining. Thanks a lot for doing this watching someone go through them and explain is v helpful

[ratofalady]

Why on 7.2 does it say "solid sodium iodide" if nothing includes sodium

[srm]

I love you, thank you for these and the explanations are so good ma sha Allah!

[ibziano]

Hi there this was fantastic just asking for when part 2 will be uploaded

[awaissohail]

would the bond angle in NCl3 not be 107 since 109.5 gets reduced by 2.5

[chinrxhh]

Thanks for that video.👍👍👍👍.Would you consider to do a level biology in the future?Just wander

[maisygledhill]

At 30:21 why does the -57.1 kJ suddenly become positive when you multiply it by 1000?

[Mqn]

I dont understand at 29:05, question 4.3 why dont you add the moles of the reactants, how do you know which mole to use and which to disregard. I got this question wrong and was really confused.

[teacher-programmingguru]

Hi, can you explain why for question 04.3 you didn't double the number of moles and do moles of NaOH + moles of HCl?