OCR GCSE Chemistry Gateway A 9-1 UNOFFICIAL MARK SCHEME

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Gcse12345678
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#1
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#1
Come through with the answers...
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Gcse12345678
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#2
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For the chromatography question I think it was substance diveded by solvent
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Evil Homer
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(Original post by Gcse12345678)
Come through with the answers...
What Exam board is this for?
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Gcse12345678
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#4
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Who done the balancing equation question right for the last ever question... it took so long
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Gcse12345678
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#5
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What did you guys get for the bond enthalpy question?
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Gcse12345678
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OCR Gateway A Higher
(Original post by Evil Homer)
What Exam board is this for?
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Smartly superior
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(Original post by Gcse12345678)
Who done the balancing equation question right for the last ever question... it took so long
3Pb + 8HNO3 --> 3Pb(NO3)2 + 2NO + 4H2O
Last edited by Smartly superior; 2 years ago
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Smartly superior
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-409
(Original post by Gcse12345678)
What did you guys get for the bond enthalpy question?
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Jazz.xox
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#9
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Ocr
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Jazz.xox
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#10
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So who did the OCR Single higher chemistry paper 3? was the last question about electrolysis? cuz I feel like I missed a page
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username4598946
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(Original post by Jazz.xox)
So who did the OCR Single higher chemistry paper 3? was the last question about electrolysis? cuz I feel like I missed a page
Yep the paper 3 is the one that was done this morning. The higher paper's last question was on balancing reactions and molar stuff.
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Jazz.xox
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#12
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it was after the electrolysis question?
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Sports
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#13
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#13
What was the bond energy answer. I got something like 272
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Smartly superior
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(Original post by Sports)
What was the bond energy answer. I got something like 272
-409
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Smartly superior
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yes
(Original post by Jazz.xox)
it was after the electrolysis question?
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Jazz.xox
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well, ****
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Y.meric
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#17
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#17
Was the answer for the last question 0.01mol?
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Smartly superior
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#18
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#18
(Original post by Y.meric)
Was the answer for the last question 0.01mol?
no, 0.10
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Sports
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#19
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the paper was harder than last years definitely
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username4598946
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#20
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(Original post by Smartly superior)
no, 0.10
Yep 0.10 is correct as the ratios of Pb and Pb(NO3)2 are the same, so just do 20.7g/207.2 to get something like 0.0999, which to 2 s.f. is 0.10
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