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**derive the density of an ideal gas as a function of temperature??**

## Homework Statement

Derive the density of an ideal gas when it is allowed to expand as a function of temperature when pressure is kept constant/

## Homework Equations

## The Attempt at a Solution

density= PM/(RT) , where M is the molecular weight

or ∂ρ/∂T =M/(RT)

or ρ(V,P),then keep P constant, ∂ρ/∂V =∂<PM/(RT)>

actually i am not sure what the question asking about . Thank you