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Plop/Some equations
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User:Plop
Here are some equations which are probably only useful to me.
Reaction rates
edit
"Easy" reaction rate formula
edit
reaction rate
=
change in mass or concentration
time taken
{\displaystyle {\mbox{reaction rate}}={{\mbox{change in mass or concentration}} \over {\mbox{time taken}}}}
Example
edit
reaction rate
=
change in mass of magnesium
time taken
=
0.1
10
g magnesium used up per second
=
0.01
gs
−
1
or
0.01
g
s
or
0.01
grams per second
{\displaystyle {\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}}}