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Lena [83]
4 years ago
15

Mix 30 mL of water at 15 degrees Celsius and 30 mL of water at 55 degrees Celsius

Chemistry
1 answer:
murzikaleks [220]4 years ago
7 0
A) 60 male
B)70 Celsius
C) 15 celsius
D) 55 Celsius
E)40
F)60
G)it increased
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Solution:-

  • a=Carbon(c)
  • b=Nitrogen ion(N+)
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Now

#1

Let's look at the EC of carbon(Z=6)

\\ \tt\longmapsto 1s^22s^22p^2

  • Valency is 4

Now.

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#2

Lets look at EC of Nitrogen(N),Z=7

\\ \tt\longmapsto 1s^22s^22p^3

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But

Its Cation i.e N+

  • Hence 1 electron it donated .Now it has valency 4

Hence

Electron left unshared=4-3=1

#3

Lets look at EC of Oxygen(Z=8)

\\ \tt\longmapsto 1s^22s^22p^4

  • Valency =2

But it is anion hence 1electron required more which us bonded

Hence

Number of electrons left unshared=0

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Explanation:

The correct options that apply to the principal conservation of energy are A, C, and D.

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D is also correct. A closed system is a system that does not exchange matter with its surroundings. <em>Hence, the total energy remains the same within the system. </em>

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