Question

P- P2O5- NaPO4- H3PO4- Ca (NO3)2

Answer 1

1) 4Р + 5О2 = 2Р2О5
2) Р2О5 + 3Н2О = 2Н3РО4
3) 2Н3РО4 + 3СаСО3 = Са3(РО4)2 +3СО2 + 3Н2О
4) Са3(РО4)2 + 6НNO3 = 2H3PO4 + 3Ca(NO3)2

Answer 2

It seems like you've listed several chemical compounds and elements. If you have specific questions or if you'd like information about these compounds, their properties, or reactions involving them, please provide more details, and I'll be happy to assist you.