For every action there is an equal and opposite reaction is known as? *

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.

How many atomic mass units are equal to 1.672×10−24 g of protons?