By the following reaction the phosphorous can be prepared from calcium phosphate:
2Ca3(PO4)2(s) +6SiO2(s) + 10C(s) ------> 6CaSiO3(s) +P4(s) + 10CO(g)
Phosphorite is a mineral that contains Ca3(PO4)2 plus other non-phosphorous-containing compounds. Find out the maximum amount of P4 that can be formed from 1.0 kg of phosphorite if the phosphorite sample is 75%Ca3(PO4)2 by mass?