Additional science b3 c3 p3 higher ocr

How did you find the exams?
I didn't really like physics and it wasn't the best. Let's share answers

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can u predict grade boundaries plz

Reply 21

kads

3

Original post by YourGoddamnRight

What did you guys get for the chemistry reacting masses question? I got 640 grams of oxygen

yh thats exactly what i got

Reply 22

hxxxxxxj

1

Original post by YourGoddamnRight

it was C, because the blood starts in the heart, where there high pressure , then goes to the artery where there is less pressure, then in the capillaries with least pressure, and high blood flow.

Wrote this!

Reply 23

workaholic.ok

OP

10

I wrote it was b for first one because it's at steady speed o-O

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Reply 24

honeybee1

13

Original post by Owenkearney

There was hardly any biology it was more about graphs and ethics 😭😭 the 6 marker was nice though

Agreed, I felt like I was just repeating myself in all the questions :colondollar:

Reply 25

FopePrancis

13

Original post by YourGoddamnRight

What did you guys get for the chemistry reacting masses question? I got 640 grams of oxygen

Correct.

Reply 26

Owenkearney

9

Original post by FopePrancis

Correct.

How I got 320

Reply 27

FopePrancis

13

Original post by Owenkearney

How I got 320

680 g producing 320 g? Unlikely.
You probably messed up your Relative Molecular Mass or divided by a wrong number.

Reply 28

YourGoddamnRight

15

Original post by Owenkearney

How I got 320

16 X 2 = 32

32/34 = some decimals

some decimals X 680 = 640

Reply 29

Owenkearney

9

Original post by FopePrancis

680 g producing 320 g? Unlikely.
You probably messed up your Relative Molecular Mass or divided by a wrong number.

I did
680/68 = 10x 32 =320 how can it be 640 when oxygen was not the only product
I don't know tbh that's just what I did 😂

Reply 30

workaholic.ok

OP

10

Guys what did you put for the car one with the 15m and 5m?

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Reply 31

FopePrancis

13

Original post by Owenkearney

I did
680/68 = 10x 32 =320 how can it be 640 when oxygen was not the only product
I don't know tbh that's just what I did 😂

The calculation is wrong. You needed to calculate the desired product, which was oxygen.
First you needed to work out the RMM, of which oxygen was 32.
Then you needed to divide it by the RMM of the first product (don't remember what it was now) to understand how much 1g would give.
And then multiply it by 680.

(edited 6 years ago)

Reply 32

Owenkearney

9

Original post by workaholic.ok

Guys what did you put for the car one with the 15m and 5m?

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5m/s

Reply 33

taliazachar

5

I got 12.5 for Kylie's velocity I think, and I put B because it had the lowest pressure, and then A and C were arteries and veins... not really sure on that one :/ The biology could have been less graphs and more biology in my opinion

Reply 34

Sxv_

8

Original post by FopePrancis

The calculation is wrong. You needed to calculate the desired product, which was oxygen.
First you needed to work out the RMM, of which oxygen was 34.
Then you needed to divide it by the RMM of the first product (don't remember what it was now) to understand how much 1g would give.
And then multiply it by 680.

You're wrong sorry to say but this is how.

68=32 now you want 680 g so essentially times both by 10 and get 320 grams. Another way to look at it would be that when the equation is balanced it is in a 2:1 ratio so 2x=680 x=320g so oxygen is 320g. Period.

Reply 35

workaholic.ok

OP

10

What about another use of cloning?

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Reply 36

FopePrancis

13

Original post by Sxv_

You're wrong sorry to say but this is how.

68=32 now you want 680 g so essentially times both by 10 and get 320 grams. Another way to look at it would be that when the equation is balanced it is in a 2:1 ratio so 2x=680 x=320g so oxygen is 320g. Period.