Question

# Octane, a component of gasoline, can undergo the following combustion with an excess of oxygen gas:...

Octane, a component of gasoline, can undergo the following combustion with an excess of oxygen gas:
2 C8H18 (ℓ) + 25 O2 (g) → 16 CO2 (g) + 18 H2O (ℓ)

10.0 mL of octane and 1.50 atm of oxygen gas are placed in a 20.0 L container at 20.0°C.

Calculate the total pressure in the container after complete combustion (in atm). (Assume the vapor pressures of water and octane are negligible and temperature and volume remain constant. The density of octane is 0.703 g/mL. The molar mass of octane is 114.22 g/mol.)

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