Heisenberg’s uncertainty principle
More the no. of hydrogen ions more is the solution acidic.
pH means the power of hydrogen that determines the concentration of hydrogen ions or the level of acidiy or basicity of a solution.
so more the hydrogen ions more will be the Power of Hydrogen (pH) and thus more wil be the acidity.
If you type in the letters (uppercase and lowercase matters) into google it will give you the answers
545mm Hg in Kilopascals is 72.6607
I hope this helps you. Good luck stay safe, healthy and, happy!<3