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With oxygen/propane torches, the air/fuel ratio can be much lower. The stoichiometric equation for complete combustion of propane with 100% oxygen is: [7] C 3 H 8 + 5 (O 2) → 4 (H 2 O) + 3 (CO 2) In this case, the only products are CO 2 and water. The balanced equation shows to use 1 mole of propane for every 5 moles of oxygen.
Oxy-propane torches are usually used for cutting up scrap to save money, as LPG is far cheaper joule for joule than acetylene, although propane does not produce acetylene's very neat cut profile. Propane also finds a place in production, for cutting very large sections. Oxy-acetylene can cut only low- to medium-carbon steels and wrought iron ...
The larger torches may have a heavy fuel reservoir placed on the ground, connected by a hose. This is common for butane- or propane-fuelled gas torches, but also applies to the older, large liquid paraffin (kerosene) torches such as the Wells light. Many torches use a hose-supplied gas feed, which can be mains gas when used in industrial settings.
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The nation’s highest civilian award honors individuals who ‘made exemplary contributions to the prosperity, values, or security of the United States, world peace, or other significant societal ...
Improvement to cognitive performance caused by exercise could last for 24 hours, a new study shows. Scientists also linked getting 6 or more hours of sleep to better memory test scores the next day.