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VioletKo3F wrote:Jordan Young 2J wrote:Enthalpy of formation of O2 is zero because it's in its most stable form of oxygen
How would you know that it's the most stable form? Would you have to memorize it?
Yeah, it's kind of a memorization thing. It's a gas, bonded between two identical atoms. And O2 as a gas is literally one of the simplest elements to be found in nature, easily diffusing in blood cells, lungs, through cell membranes. Also, another tip, if you try looking up the enthalpy of formation of O2 on the constants sheet they give us on the tests, it doesn't exist. So you can just assume its zero and as such is in is most stable form.
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