The gauge pressure at the bottom of a vertical tube (open to the atmosphere) filled with mecury is 100kPa. How high is the column of mecury in the tube?

Question

I used the formula pressure=density * gravity * height which i reaaranged to find h= 100000Pa/(13570kg/m3*9.8)=0.75m but this is not the correct answer, can anyone help me out

Answer 1

100 kPa is 0.987 atm. If that is the gauge pressure there, the absolute pressure there is 1.987 atm.

I agree with your answer.