3. How many grams of
CoCl, in 1/2 Liter would be
used to make a 1.0 molar
solution?

Water is called the universal solvent because more substances dissolve in water than in any other chemical. this has to do with the polarity of each water molecule. the hydrogen side of each water (h2o) molecule carries a slight positive electric charge, while the oxygen side carries a slight negative electric charge.