Question

A gas us a pressure of 800 kPa at 327 degree C. What will be its pressure at 27 degree C, if the volume does not change?

A. 400 kPa
B. 1,600 kPa
C. 668 kPa
D. 958 kPa

Answer 1

Ooo gas laws! fun! the answer is B, 1600 kPa

Step-by-step explanation:

Here are some key things to remember:

- to convert Celsius to Kelvin add 273

- we are using the equation
`P1 x T1 = P2 x T2`

our given variables:

P1=800kPa

T1= 327 + 273 = 600 K

P2= ? (decrease)

T2= 27+ 273 = 300 K

- rearrange our equation and plug in the numbers to solve.

`P2= (P1 x T1)/(T2)`

`800 kPa = (600 K)/(300 K)`

- Our Kelvin cancels out so that leaves us with the measurment of kPa. When the numbers are solved out, you get 1600 kPa