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The particle model

The particle model

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Question 5

An engineer investigating a new refrigerant measures its density in the liquid phase to be $m−3\rho_L = 1200\text{ kg m}^{-3}$ , and in its gaseous phase to be $m−3\rho_G = 1.2\text{ kg m}^{-3}$ .

Using a simplified cubic particle model where each molecule of mass $m\,$ occupies a volume of $d^3$ (where $d\,$ is the mean molecular spacing), estimate the ratio of the mean molecular spacing in the gas to that in the liquid, $dGdL\displaystyle \frac{d_G}{d_L}$ .

A

$1000$

B

$100$

C

$10$

D

$32$

Markscheme

The particle model Questions

GCSE
Physics
The particle model

29 exam-style questions on OCR GCSE Physics The particle model. Each one has a worked solution and a mark scheme showing where the marks go.

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