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Question 18M.2.HL.TZ2.2a.ii

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.2.HL.TZ2.2a.ii
Level HL Paper 2 Time zone TZ2
Command term Calculate Question number a.ii Adapted from N/A
a.ii.
[Maximum mark: 1]
18M.2.HL.TZ2.2a.ii

An ideal monatomic gas is kept in a container of volume 2.1 × 10–4 m3, temperature 310 K and pressure 5.3 × 105 Pa.

(a.ii)

Calculate the number of atoms in the gas.

[1]

Markscheme

N = « p V k T = 5.3 × 10 5 × 2.1 × 10 − 4 1.38 × 10 − 23 × 310 » 2.6 × 1022

[1 mark]

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