The weight of a particle of unobtainium is 2.66 x 10−6oz. The weight of a grain of spice is 9.17 x 10−4oz. About how much more does a grain of spice weigh than the particle of unobtainium? A 6.51 × 10–3 oz B 6.51 × 10–2 oz C 9.1 × 10–2 oz D 9.1 × 10–4 oz