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ololo11 [35]
3 years ago
9

If chemical reactions involve atoms disconnecting from each other and then connecting with different atoms in different ways, wh

y do you think energy would go into or out of chemical reactions? In other words, how could energy be involved in disconnecting or connecting atoms to each other?
Chemistry
1 answer:
Valentin [98]3 years ago
5 0

Answer:  Energy can  be involved in disconnecting or connecting atoms to each other as the energy is used to break the bonds between the atoms ,so the reaction could proceed.

Explanation:<u> The statement can be well explained by the  Planck's quantum theory , which states -:</u>

  • In the form of small energy packets known as quanta of energy, energy is not released continuously, but discontinuously.
  • The energy of each quantum is directly proportional to radiation frequency, i.e. E is directly proportional to v, where v is frequency E = hv, where h is the proportionality constant known as the constant of Planck.
  • Any integer quanta will be the total energy of the radiation emitted or absorbed. Let the 'E' be the total radiation energy. So, when n is an integer, E'=nhv.

Hence, the given answer is based on the Planck's Quantum theory.

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The reaction of 5.40 g of carbon with excess O2 yields 13.6 g of CO2. What is the percent yield of this reaction?
vazorg [7]
C + O2= CO2
n  =  \frac{m}{mw}
n =  \frac{5.4}{12}  \\ n  = 0.45 \: mol \: of \: carbon
n =  \frac{13.6}{12 + 16 \times 2} \\ n =  \frac{13.6}{44}  \\ n = 0.31 \: mol \: of \: carbon \: dioxide
CO2 is limit
5.4-3.72= 1.68 g of C is excess
5.4 g = 100%
3.72 g = x
x=68.9 %
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