What is the pH of a solution in which [H 3O +] = 3.8 × 10 -8 M?

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

If many scientists conduct the same or similar experiments, and all obtain similar results, a can be written, which is a generally agreed-upon statement that explains and predicts how a natural phenomenon works.

What does an electron configuration for an atom relate to the atoms placement on the periodic table