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Making measurements and analysing data

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Question 4

A group of physics students perform experiments to determine the molar gas constant, RRR. The accepted database value for this constant is 8.31 J K-1 mol-1.

Which of the following experimental values is the best in terms of both accuracy and precision?

A

(8.22±0.15) J K−1 mol−1(8.22 \pm 0.15)\text{ J K}^{-1}\text{ mol}^{-1}(8.22±0.15) J K−1 mol−1

B

(8.15±0.05) J K−1 mol−1(8.15 \pm 0.05)\text{ J K}^{-1}\text{ mol}^{-1}(8.15±0.05) J K−1 mol−1

C

(8.48±0.05) J K−1 mol−1(8.48 \pm 0.05)\text{ J K}^{-1}\text{ mol}^{-1}(8.48±0.05) J K−1 mol−1

D

(8.33±0.05) J K−1 mol−1(8.33 \pm 0.05)\text{ J K}^{-1}\text{ mol}^{-1}(8.33±0.05) J K−1 mol−1

Markscheme

Making measurements and analysing data Questions

  1. A Level
  2. /Physics
  3. /Making measurements and analysing data

26 exam-style questions on OCR A A Level Physics Making measurements and analysing data, covering Measurements and uncertainties. Each one has a worked solution and a mark scheme showing where the marks go.

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