AQA A level CHEMISTRY 7405 1 Paper 1 Inorganic and
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AND LITERATURE 7707-1 Paper 1 Telling Stories Question Exam (elaborations) AQA A level physics paper 2 2019 mark scheme.pdf.docx Exam (elaborations) AQA a level physics paper 2 2021 question paper and mark scheme.docx Exam (elaborations) AQA as leve
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---32mei 2025
- AND LITERATURE 7707-1 Paper 1 Telling Stories Question


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AQA A level physics paper 2 2019 mark scheme.pdf.docx


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AQA A-level CHEMISTRY 7405-1 Paper 1 Inorganic and Physical Chemistry Mark scheme June 2022, Exams for Chemistry
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---39juni 20232022/2023A+
- M1 
Δf H = Δ a H (Sr) + 2ΔaH (Cl) + Δ 1st IE H (Sr) + Δ 2nd IE H (Sr) + 2ΔEA H(Cl) + 
ΔLEH (Sr) 1 
Or 
– 828 = 164 + (2 x 121) + 548 + 1060 + (2 xΔEA H) + (– 2112) 
01.1 M2 2 x ΔEA H = – 730 1 
M3 ΔEA H = – 365 (kJ mol–1 
) Allow M3 = M2÷2 
(+) 365, –304.5, and –730 = 2 marks 1 
(+) 304.5, (+) 730 and –609 = 1 mark 
(+) 609 = 0 marks 
11 
–3889BaCl2 
01.2 
–2493MgO 
–2018MgCl2 
1 
All three lines must be shown
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