Question

9 mol P4010 reacts with 51 mol

H₂O according to the equation below:
P4010 + 6H₂O → 4H3PO4
How many moles of H3PO4 form
from 51 mol H₂O?
[?] mol H3PO4
Round your answer to the ones place.
HELP ASAP WORTH LOTS OF POINTS

Answer 1

It's 36

Step-by-step explanation:

6 x 6 = 36

Answer 2

Using stoichiometric relationships:

`P_4O_1_0 + 6H_20` →
`4H_3PO_4`

moles P4O10 = 9 mol

mol H2O = 51 mol/6

mol H2O = 8.5

H2O is limiting

`51molsH_2O` x
`(4 mol H_3PO_4)/(6 molH_2O)`

∴ moles H3PO4 = 34 mol