How dence is air compared to helium?

[From: ] [author: ] [Date: 14-05-12] [Hit: ]

=helium?Nothing more nothing less thank you - Depends on temperature and pressure of environment so there isnnt a straight forward answer,air has a density of approx. 1.helium has a density of approx. 0.......

I want a strait forward answer
Helium?=air?
Or
Air?=helium?
Nothing more nothing less thank you

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Depends on temperature and pressure of environment so there isnn't a straight forward answer, but at STP;

air has a density of approx. 1.205 kg/m3
helium has a density of approx. 0.1664kg/m3

So Air is 7.2 times denser than Helium at STP

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Air density: - At sea level and at 15 °C, air has a density of approximately 1.225 kg/m³ (0.001225 g/cm³, 0.0023769 slugs/ft³) according to ISA (International Standard Atmosphere).

Helium gas density : (0 °C, 101.325 kPa) 0.1786 g/L or 0.1786 kg/m³

It is difficult to locate values of density for these two gases at the same pressure and temperature values.

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