Question

What is stoichiometry and what is it used for?

Answer 1

What is `"stoichiometry"`? Well, it is the principle that `"garbage in equals out...."`

Explanation:

And what underlies it? Well, the principle that MASS is conserved in a chemical reaction....and our chemical equations that represent these reactions must reflect this mass equivalence...

[See this old answer...](https://socratic.org/questions/in-a-chemical-reaction-what-does-the-principle-of-conservation-of-mass-mean). And [see here.](https://socratic.org/questions/5705dfbd7c014960d91d6deb) And elsewhere...