A sample of gas X occupies 10 mº at a pressure of 120 kPa.
If the volume of the sample is changed to 3 m, what is the
new pressure of the gas?
kPa

The new pressure of the gas comes out to be 400 KPa.

Explanation:

Initial volume of gas = V =

Initial pressure of gas = P = 120 KPa

Final volume of gas = V' =

Assuming temperature to be kept constant.

Assuming final pressure of the gas to be P' KPa

New pressure of gas = 400 KPa

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

let that person have a turn to speak : )