The following that is not true about chemical changes is "<span>They can be reversed by physical changes.", the answer is letter B. A chemical change can form a new substance, can be detected by the change in color and they have properties different from their starting materials.</span>
Balanced equation :
2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O
Organic Nomenclature:
Hexane is a six-carbon straight-chain alkane. The prefix "hex-" signifies the number 6 for alkanes, and the suffix "-ane" is what clarifies that this hydrocarbon has only carbon-carbon single bonds. There are no double or triple bonds.
Elaborating the equation :
The mass of hexane available for this reaction is converted to a quantity of moles by multiplying by its density to get a mass and then dividing by its molar mass. This quantity of moles is then related to the quantity of moles of oxygen by their molar ratios. According to this balanced reaction equation, every 2 moles of hexane burned will require the reaction of 19 moles of oxygen gas.
Learn more about balanced equation :
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Answer: Okay!
Explanation: Well then the third thing could be dead plant? You already have 2 other things
618.936 joules. Multiplied by 4.182 though, not much difference, but
