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Question 18M.2.SL.TZ1.b.i

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.2.SL.TZ1.b.i
Level SL Paper 2 Time zone TZ1
Command term Calculate Question number b.i Adapted from N/A
b.i.
[Maximum mark: 1]
18M.2.SL.TZ1.b.i

A closed box of fixed volume 0.15 m3 contains 3.0 mol of an ideal monatomic gas. The temperature of the gas is 290 K.

When the gas is supplied with 0.86 kJ of energy, its temperature increases by 23 K. The specific heat capacity of the gas is 3.1 kJ kg–1 K–1.

Calculate, in kg, the mass of the gas.

[1]

Markscheme

mass = « 860 3100 × 23 » 0.012 «kg»

 

Award [1] for a bald correct answer.

[1 mark]

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