Consider the following solvent pairs when mixed: Which are immiscible/miscible? If the solvents are immiscible, which solvent would be in the top layer?a. hexane and waterb. methylene chloride and waterc. ethanol and waterd. ether and water

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided