Answer:
Step-by-step explanation:
H = 9 You get that from the 3 in front of the phosphoric acid and the 3 behind it.
P = 3 The three in front of the phosphoric acid affects everything.
O4 = 12 The three multiplies by the 4 to get 12
Total number of atoms = 9 + 3 + 12 = 23
It's inorganic. It has no carbons and nothing else you could argue that it makes an organic compound.