The relative atomic masses of elements are proportional measures. For example, the Ar for helium is 4.0, and the A r for carbon is 12.0. This means that carbon atoms have three times the mass of ...

The chemical formula of a covalent molecular substance gives the number of atoms per molecule. The formula of a covalent network or ionic compound gives the simplest ratio of atoms/ions in the ...

The Nicomp can be used for estimating the average molecular weight, Mw, of particles or macromolecules suspended in solution. The word "estimate" is emphasized since the measurement of molecular ...

For a rough idea of a dog’s physiological age, a popular approach is to simply multiply its actual age by seven, but new research upends this piece of conventional wisdom. Scientists have developed a ...

You might know that H20 is the chemical formula for water, but what about the chemistry of you? Dr Joe Hanson, a science writer and biologist based in Austin, Texas, pondered this very question and ...