Some amount of dichloromethane (CH2Cl2) is added to 671.141 mL of chloroform (CHCl3) to prepare 2.6 x 10-3 M solution of CH2Cl2 DCM.
The concentration of DCM is ______ ppm (by mass).
Given: Atomic mass : C = 12; H : 1; Cl = 35.5 density of CHCl3 = 1.49gcm-3
