Question

air is trasferred from 75 L tank where the pressure is 125 psi and the temperature is 288 K to a tire with a volume. of 6.1 L and a pressure of 25 psi. what is the new temperature ?

Answer 1

Answer:

4.7K

Explanation:

Given parameters:

Initial volume  = 75L

Initial pressure  = 125psi  

        to atm gives 8.5atm

Initial temperature  = 288K

New volume  = 6.1L

New pressure  = 25psi

        to atm gives 1.7atm

Unknown:

New temperature = ?

Solution:

To solve this problem, we use the combined gas law which is given below:

        $\frac{P1 V1}{T1}$    = $\frac{P2 V2}{T2}$  

P, V and T are pressure, volume and temperature

1 and 2 are initial and new states

                  $\frac{8.5 x 75}{288}$   = $\frac{1.7 x 6.1}{T2}$

        T2  = 4.7K