Two moles of phosphoric acid (H3PO4) contain, respectively: "x" moles of hydrogen atoms, "y" moles of phosphorous atoms, "z" moles of oxygen atoms. Options:
a)9,3,12
b)2,2,2
c)3,1,4
d)6,2,8

d)

Explanation:

in one mole of phosphoric acid you have 3 mol hydrogen, 2 mol phosphorus, and 4 mol oxygen. just multiply everything by 2 and you get 2 mol of phosphoric acid

i think it is d. e because the next one is igneous.

i believe it is c.) 1575 j.