Mathematics is the language of science, and numbers are at the heart of all chemical sciences.understand the numbers, and you.ll have a better understanding of the science. Chemistry in 100 Numbers explores the most important and interesting numbers in chemistry, starting with the lowest number (-92.4, which is the .negative. enthalpy of the Haber process measured in kilojoules and moles) and working in numerical order up to the very largest (6.0221367 1023, which is Avogadro.s number of particles in exactly 12 grams of carbon-12).