Question

Question #86d80

Answer 1

We know the Ideal Gas Equation is described in the form
`PV=nRT` .....(1)

We also know that number of moles of sample `n=("mass of sample "m)/("Molecular weight of gas "M)`
Also that Density `D=m/V`
Therefore, (1) becomes

`PV=m/MRT`
`=>(PM)/(RT)=m/V=D`
`=>D=(PM)/(RT)`

Since the temperature of sample of gas is being increased at constant pressure we get

`Dprop1/T` .......(2)

Proportion of its final density to its initial density from (2)
`D_("Final")/D_(Initial")=T_127/T_227`

Inserting values of temperature in Kelvin we get
`D_227/D_127=(273+127)/(273+227)=400/500=0.8`