Directions Identify the reactants and product in the following reaction.
4A1+302 → 2A1203

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

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