What is the formula, name and molecular mass of compound. Which obtain by estimation of phosphorus?

What is the formula, name and molecular mass of compound. Which obtain

1.	What is the formula, name and molecular mass of compound. Which obtain by estimation of phosphorus?
Answer» SOLUTION :`Mg_(2)P_(2)O_(7)`, Magnesium pyrophosphate 222g `(NH_(4))_(3) PO_(4) 12MoO_(3)`, Ammonium phosphor-molybdate 1187g