Can somebody please answer this question

Question

Given the following equation:

4 NH₃ (g) + 5 O₂ (g) → 4 NO  (g) + 6 H₂O (l)

How many moles of H₂O is produced if 0.33 mol of O₂ reacts? 

 mol H₂O

Answer 1

4 NH₃ (g) + 5 O₂ (g) → 4 NO  (g) + 6 H₂O (l)

From the balanced equation, we see that 6 mols H₂O are formed from 5 mols O₂. We can use this mole ratio to find the mols of H₂O from any amount of O₂.

Thus, if we have 0.33 mols of O₂, we find mols of H₂O as follows:

0.33 mols O₂ x 6 mols H₂O / 5 mols O₂ = 0.396 mols H₂O formed = 0.40 mols H₂O (to 2 sig. figs.)

If you still don't understand, place a comment to this answer and I'll try to explain further.

Answer 2

The balanced chemical reaction equation is in "moles". It says that that for every 6 moles of H₂O produced, it requires 5 moles of O₂ to react.

So if you only have 0.33 moles of O₂, then:

Solve for "x"