- #1

Ben_Walker1978

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## Homework Statement

a) A mass of 0.12 kg of air has an initial temperature of 500°C and pressure 0.8 MPa. If the air is expanded according to the law pV1.2 = c to a final volume of 90 litres, determine

i) its initial volume,

ii) its final pressure,

iii) its final temperature.

For air, take R = 287 Jkg¯¹ K¯¹.

## Homework Equations

pV1.2 = c

pV = nRT

n = pxV / RxT

## The Attempt at a Solution

Can anyone point me in the right direction?

As i have no clue how to complete this.

Thanks.