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Question 19N.2.SL.TZ0.2b(iii)

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Date November 2019 Marks available [Maximum mark: 2] Reference code 19N.2.SL.TZ0.2b(iii)
Level SL Paper 2 Time zone TZ0
Command term Comment Question number b(iii) Adapted from N/A
b(iii).
[Maximum mark: 2]
19N.2.SL.TZ0.2b(iii)

The air in a kitchen has pressure 1.0 × 105 Pa and temperature 22°C. A refrigerator of internal volume 0.36 m3 is installed in the kitchen.

The refrigerator door is closed. The air in the refrigerator is cooled to 5.0°C and the number of air molecules in the refrigerator stays the same.

(b(iii))

Comment on the magnitude of the force in (b)(ii).

[2]

Markscheme

force is «very» large ✔

there must be a mechanism that makes this force smaller
OR
assumption used to calculate the force/pressure is unrealistic ✔

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