how to numerical problem in chemistry
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Chemistry is the science of matter: its composition, its properties, the changes that lead to its formation, and the ways it interacts with other matter in its surroundings. We start with the building blocks of matter - electrons, neutrons, and protons - and build atoms and ions, which then form the molecules and ionic compounds that can react to produce the material world we know. Careful investigation of the properties and tendencies of these material formations promotes better understanding of the capabilities of the material world.
This collection of chemistry calculators, broken down into different fundamental concepts, is a good survey of introductory chemistry, but also contains some tools for higher level endeavors in such topics as quantum numbers and advanced stoichiometry.