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Use of the Data Booklet is relevant to this question.

The approximate percentage composition of the atmosphere on four different planets is given in
the table below.

The density of a gas may be defined as the mass of 1 dm3
of the gas measured at s.t.p.

Which mixture of gases has the greatest density?

planet major gases /
% by number of molecules
A Jupiter H2 89.8, He 10.2
B Neptune H2
80.0, He 19.0, CH4 1.0
C Saturn H2 96.3, He 3.25, CH4 0.45
D Uranus H2 82.5, He 15.2, CH4 2.3

Respuesta :

syed514
The density of a gas may be defined as the mass of 1 dm3 of the gas measured at s.t.p.

The following mixture of gases has the greatest density: D Uranus H2 82.5, He 15.2, CH4 2.3

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