A LEVEL CHEMISTRY PRACTICE PAPER 3 MS
A-LEVEL CHEMISTRY PRACTICE PAPER 3 MS
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AQA EXAMPRO A-LEVEL CHEMISTRY PRACTICE PAPER 3 MARK SCHEME SUMMER 2022 100%CORRECT.
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---6juni 20222021/2022A+
- A-LEVEL CHEMISTRY MARK SCHEME 
Practice Paper 3 
1.(a)Start a clock when KCl is added to water 1 
Record the temperature every subsequent minute for about 5 minutes 1 
Allow record the temperature at regular time intervals until some time after all the solid has dissolved for M2 
Plot a graph of temperature vs time 1 
Extrapolate back to time of mixing = 0 and determine the temperature 1 
Drawing of suitable graph could score M2, 3 and 4 
(b)Heat taken in = m × c × ΔT = 50 × 4.18 × 5.4 = 1...
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