E.R.DEGGINGER / SCIENCE PHOTO LIBRARY E.R.DEGGINGER / SCIENCE PHOTO LIBRARY
Propane flames. Blue flames of a propane burner. The blue colour of the flame indicates that the gas is burning completely in oxygen. Incomplete combustion results in a yellow, smoky flame. Propane is a hydrocarbon chemical which is found in natural gas. It is made of carbon (chemical symbol C) and hydrogen (chemical symbol H) and has the formula C3H8. The chemical equation for its complete combustion in oxygen gas (O2) to form carbon dioxide (CO2) and water (H2O) is: C3H8.
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