User:Plop/Some equations

Here are some equations which are probably only useful to me.

Reaction rates

"Easy" reaction rate formula

${\mbox{reaction rate}}={{\mbox{change in mass or concentration}} \over {\mbox{time taken}}}$

Example

${\begin{matrix}{\mbox{reaction rate}}&=&{{\mbox{change in mass of magnesium}} \over {\mbox{time taken}}}\\&=&{\frac {0.1}{10}}{\mbox{g magnesium used up per second}}\\&=&0.01{\mbox{gs}}^{-1}\\&{\mbox{or}}&0.01{\frac {\mbox{g}}{\mbox{s}}}\\&{\mbox{or}}&0.01{\mbox{ grams per second}}\\\end{matrix}}$