1.45 moles of P2O3 contains 1.45 moles of O3 which means 4.35 moles of O:
1.45 × 3 = 4.35 moles of O
Then you can calculate moles of O2 by dividing it by 2:
4.35 moles ÷ 2 = 2.175 moles of O2 needed
I believe it's D! Hope you can help with my question!
1a) anion and S-2
1b) cation and Al+3
1c) anion and N-3
1d) cation and Ca+2
