Easy: find pressure

  • Thread starter zcabral
  • Start date
  • #1
zcabral
30
0

Homework Statement


An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. During the process, the air is compressed to 26.0% of its original volume and the temperature is increased to 32.0°C.
What is the tire pressure? Pa




Homework Equations


Pv=nRT P1V1/T1= P2V2/T2


The Attempt at a Solution



i used p1v1/t1=p2v2/t2 and got 4.15 Pa but it was wrong
 

Answers and Replies

  • #2
kamerling
454
0
make sure you have the same units for p1 and p2
 
  • #3
zcabral
30
0
yes i checked it. i used 1 atm for the original pressure and then changed it to pa
 
  • #4
alphysicist
Homework Helper
2,238
2
Hi zcabral,

It's difficult to follow your calculation without knowing the numbers you put into your calculation.

However, here I think you forgot to include p1 in your calculation. Or did you not convert it? Atmospheric pressure in pascals is about [tex]1.013\times 10^5[/tex] (did you use that number?), so the pressure your getting in your first post is tiny.
 

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