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lutik1710 [3]
4 years ago
10

How Do We Know That Caramelizing Sugar Is A Chemical Change?

Chemistry
2 answers:
zavuch27 [327]4 years ago
8 0

the correct answer is d. it changes the sugars color , a. is a physical change .

34kurt4 years ago
7 0
The answer is B. Sugar is made of carbon, hydrogen,and oxygen atoms. When heated, these elements react to the fire to turn into a liquid. The heat causes the sugar's atoms to combine with the oxygen in the air, forming new groups of atoms. Energy is released in the form of smoke. Let me know if it's right :)
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Answer:

4054 kcal of heat is released during complete combustion of 354 g of octane.

Explanation:

Heat of combustion of 1 mol of octane is 1.308\times 10^{3} kcal

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We know, no. of moles = (mass)/(molar mass)

So, 1.308\times 10^{3} kcal of heat is released during complete combustion of 114.23 g of octane.

So, amount of heat is released during complete combustion of 354 g of octane = (\frac{1.308\times 10^{3}}{114.23})\times 354  kcal = 4054 kcal

Hence 4054 kcal of heat is released during complete combustion of 354 g of octane.

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3 years ago
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4 years ago
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Math worksheet solved it
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