The complete balanced chemical reaction is:
<span>C7H16 + 3O2
--> 7CO2 + 8H2O</span>
So 3 moles of oxygen O2 is required for every 1 mole of
C7H16. In the same manner, 3 molecules of O2 is required for every 1 molecule
of C7H16.
Answer:
<span>3 molecules O2 </span>
For 1 hour, she makes = $12.50
So, for 4 hour, it would be: 12.50 * 4 = $50
In short, Your Answer would be $50
Hope this helps!