Quiz 1 - 10 minutes
Sept. 10, 2014
Name _____________________ Lab Section Number _____________
1. A solution of phenol in water is prepared to be 0.72 mg/mL (mass solute/volume solution).
Calculate its concentration in mM (millimolar). The formula weight of phenol is 94.1 g/mol.
[phenol] in mM = mmol/L (note: it is mmol/L because M = mol/L and mM = 1/1000th of M)
[phenol] in mM = (0.72
mg/ mL)(1 mol/94.1
g)(1000 mmol/mol) = 7.7 mM