Many computer chips are manufactured from silicon, which occurs in nature as sio2 . when sio2 is heated to melting, it reacts with solid carbon to form liquid silicon and carbon monoxide gas. in an industrial preparation of silicon, 155.3kg of sio2 of is allowed to react with 79.3kg of carbon to produce 66.2kg of silicon. what is the theoretical yield for the reaction in kg si? what is the percent yield for the reaction?