Sciencemadness Discussion Board

stoichiometry question

EnvSciMOOSE - 11-9-2005 at 17:11

Quick question on the setup of this problem, where do i start with these numbers??:

Calculate the catechol (substrate) concentration of a solution prepared by mixing:

18 drops 0.01M catechol + 2 drops water (assume 20 drops = 1mL)
8mL Deionized water
1.0 mL aqueous enzyme extract

thank you!!

Magpie - 11-9-2005 at 20:04

Assuming you want it as a molarity:

M1V1 = M2V2

M2 = (M1V1)/V2 = [(0.01)(18/20)]/(18/20 +2/20 +8 +1)

BTW this is not stoichiometry but a concentration calculation.