If a gas has a gage pressure of 156 kpa, it's absolute pressure is approximately
a] 256 kpa
b] 300 kpa
c] 56 kpa
d] 100 kpa
me solve it also

If a gas has a gage pressure of 156 kPa, it's absolute pressure is approximately A] 256 kPa. Absolute pressure (AP) is equal to gauge pressure (GP) plus atmospheric pressure (AtmP): AP = GP + AtmP. Atmospheric pressure is about 100 kPa: AtmP = 100 kPa. We have that the gauge pressure is 156 kPa: GP = 156 kPa. Now, substitute AtmP and GP in the formula for AP: AP = 156 kPa + 100 kPa = 256 kPa.

Ithink about 50 % of an original isotope's number of atoms remain