2C6H10 + 17O2 = 12CO2 + 10H2O

How many moles of oxygen are needed to produce 1.5 moles of carbon dioxide?

n O2 = 2.125 mol

Explanation:

balanced reaction:

∴ n CO2 = 1.5 mol

⇒ n O2 = (1.5 mol CO2)*(17 mol O2/12 mol CO2)

⇒ n O2 = 2.125 mol

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.