NaOH

MW = ~40

10mM = 0.01M = 0.4g/L

MW of NaOH:
Concentration:	M
to make:	mL
add:	g NaOH

if you have	g of NaOH pellets
which has a MW of	g/mol
and you want to make	M NaOH
dissolve in	mL water