1. Find the molar mass of CH2Cl2:

* Carbon (C): 1 atom * 12.01 g/mol = 12.01 g/mol

* Hydrogen (H): 2 atoms * 1.01 g/mol = 2.02 g/mol

* Chlorine (Cl): 2 atoms * 35.45 g/mol = 70.90 g/mol

Total molar mass of CH2Cl2 = 12.01 + 2.02 + 70.90 = 84.93 g/mol

2. Since 1 mole of any substance has a mass equal to its molar mass:

The mass of 1 mole of CH2Cl2 is 84.93 grams.