Question

a 5.00 l air sample has a pressure of 107 kpa at a temperature of -50.0 C. if the temperature is raised to 102 C and the volume expands to 7.00 L, what will the new pressure be

Answer 1

The new pressure would be 128.5 kPa

Step-by-step explanation:

We need to use the combined gas law to solve this problem:

`(P_(1)V_(1) )/(T_(1))=(P_(2)V_(2) )/(T_(2))`

But before using this equation we must convert °C into K.

• -50.0°C = 223.16 K
• 102 °C = 375.16 K

Then we put the data in the equation and solve for P₂:

`(107kPa*5.00L)/(223.16K)= (P_(2)*7.00L)/(375.16K) \\`

`P_(2)=128.5kPa`