A mixture of 0.144 moles of C is reacted with 0.117 moles of O2 in a sealed, 10.0 L vessel at 500 K, producing a mixture of CO and CO2 (see reaction below). The total pressure is 0.6770 atm. What is the partial pressure of CO?
3 C + 2 O2 -----> 2 CO + CO2