The gas laws
1 mark · EasyWrite the equation that connects the initial and final pressure and temperature of a fixed mass of gas at constant volume.
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\frac{p_1}{T_1} = \frac{p_2}{T_2}
Also accept: p_1/T_1 = p_2/T_2
Common mistakes: Incorrectly swapping numerator and denominator
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Marking points
B1 · 1 mark · Writes p_1/T_1 = p_2/T_2 (allow any valid rearrangement)
Worked solution