How do you write out and finish the equation when:1: iron(lll) reacts with calcium metal: 2: Magnesium sulfide reacts with calcium phosphate

1 answer

Fe^3+ + Ca>> calcium is more active than Fe, so Ca will give up electrons to a Fe ion

2Fe^3+ + 3Ca>> 3Ca^2+ + 2Fe

MgS+ Ca3(PO4)2 ok, pretending it would react, which I can't imagine,
products would be
Mg3(PO4)2 + CaS