[JamesBond007a]

I have no clue how to start this problem can someone help?

Problem: An automobile tire that has V= 0.6 m3 is inflated to a gage pressure of 200 kPA. Calculate the mass of air in the tire if the temperature is 20 Degree Celsius.

Suggestion from my teacher: Air is assumed to be an ideal gas. Use the ideal gas equation (Absolute pressure and absolute temperature (Kelvin). PAtm= 14.7   #/in V= 100 kPA.

Please help

[wuhtzu]

Since air is assumed to be an ideal gas it obeys the ideal gas law:

n*R*T = p*V

Knowing that R is a constant and that m = n*M

you have everything you need to calculate the mass m.