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Aqa chemistry as level 2016 predictions

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Question 8, part iii please? Got part 3, rest of question 8! I'm currently doing it, so i suggest you could do it for your own benefit too :smile:

(edited 7 years ago)

Topic 2 Assessed Homework.docx42.2KB

Reply 81

habibtii

gonna fail
with dignity :^)

Reply 82

srayogn

Original post by srayogn

Question 8, part iii please? Got part 3, rest of question 8! I'm currently doing it, so i suggest you could do it for your own benefit too :smile:

Question 10 anybody?

Question 8? Part iii

I've been getting A's in all our internal mocks for each unit and I've just done the set 2 specimen paper 1. I knew nothing. It was ridiculously hard. Has anyone else done these papers. Very worried about the exam tomorrow now. :frown:

Reply 85

bluecompton

I hope its 78% for an A, that's only 55 marks!

Reply 86

Sniperdon227

Original post by srayogn

Question 8, part iii please? Got part 3, rest of question 8! I'm currently doing it, so i suggest you could do it for your own benefit too :smile:

Can you please upload the MS for this booklet I need it asap cheers :frown:

Reply 87

bluecompton

Original post by srayogn

Question 8, part iii please? Got part 3, rest of question 8! I'm currently doing it, so i suggest you could do it for your own benefit too :smile:

2.49 X 10^-2 I think. Your answer to I) should be 4.98 X 10^-3, therefore ii) is 2.49 X 10^-3, that's from 25cm cubed, the whole solution is 250cm cubed, so its just 2.49 X 10^-2 I think.. Key words being "I think" :wink:

Reply 88

srayogn

There you are :smile:

Topic 2 Assessed Homework.docx42.2KB

Topic 2 hw ms.rtf595.3KB

Reply 89

srayogn

http://www.a-levelchemistry.co.uk/AQA%20AS%20Chemistry%20new%20spec/new%20AQA%20AS%20Chemistry%20home.html

Where you can get individual assessments w/ Markschemes! Hope this helps! If you have any questions feel free to ask!

Reply 90

bluecompton

Original post by Mina_

Question 8? Part iii

my answer for V) was silver, did you get the same? pretty sure I'm right but it'd be nice to get the same result as someone else haha

Reply 91

Mina_

Original post by bluecompton

my answer for V) was silver, did you get the same? pretty sure I'm right but it'd be nice to get the same result as someone else haha

We're doing different questions apparently :tongue:

Reply 92

Dyl98an

I know this is for predictions but give me a break I'm mentally ill.
Ok so I need help on this equilibrium constant question: The reaction for the formation of hydrogen iodide does not go to completion but reaches an equilibrium: H2 + I2 <---> 2HI A mixture of 1.9mol H2 and 1.9mol I2 was prepared and allowed to reach equilibrium in a closed vessel on 250cm^3 capacity. The resulting equilibrium mixture was found to contain 3.0mol of HI. Calculate Kc.

Reply 93

Mina_

Original post by Dyl98an

Whats the answer?

I got 56.25 ? I'm not confident in kc so forgive me if I'm wrong

(edited 7 years ago)

Reply 94

kassy12324

Original post by jakethomas32

Same here i didnt know anything either and ive been doing well all year

Reply 95

lovegossip

Original post by jakethomas32

omg , they're so different to any paper , all my answers are completely different to the mark scheme , im so scared. theyres so much maths and phsyics.

Reply 96

ColorMiKiki

Original post by kassy12324

Same here i didnt know anything either and ive been doing well all year

I'm doing it now and I legit panicked for a minute because I thought it was a further maths paper or something. If it's all mathsy tomorrow I'm going downnnn.

Reply 97

GracelovesNeuro

With the Hydroxides what are the test you do when its cloudy milky etc?? Quite confused and its not in the textbook.
I'm referring to the part of the spec where it states "Students could test the solubility of Group 2 hydroxides by mixing solutions of soluble Group 2 salts with sodium hydroxide and record their results." vice versa for Sulfates.

??

Reply 98

jshukz

Original post by Lazy Cynic