the scientist repeats the experiment, burning a new sample of steel wool until it is entirely converted into iron oxide. the iron oxide produced has a mass of 715g. what was the mass of the sample before burning

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