Which statement is correct?
salts are formed by the reaction of bases with water.
most salts are ionic and are soluble in water.
most salts are insoluble in water and lack electrical charges.
solutions of salt and water do not conduct electricity.

4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.