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Andrew [12]
3 years ago
14

The substances are placed in separate containers at room temperature, and each container is gradually cooled. Which of these sub

stances will solidify before the temperature reaches 0°C?
Chemistry
1 answer:
algol133 years ago
3 0

Answer:

Benzene

Explanation:

it's freezing point is 5.5 C which is greater than 0 C

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Solution:-

  • a=Carbon(c)
  • b=Nitrogen ion(N+)
  • c=Oxygen ion(O-)

Now

#1

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

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

  • Valency is 4

Now.

3 electrons are shared(1 with H_3C and 2 with N+)

Hence

Electron left unshared=4-3=1

#2

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

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

  • Valency is 3
  • It has already shared 3 electrons

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

5 0
3 years ago
What determines how molecules are redistributed in diffusion?​
FinnZ [79.3K]

Answer:

Factors That Affect Diffusion. Molecules move constantly in a random manner at a rate that depends on their mass, their environment, and the amount of thermal energy they possess, which in turn is a function of temperature

Explanation:

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The emission of the light waves in the lasers allows them to overlap properly to create larger waves, which means that _____ ove
Vikentia [17]
The emission of the light waves ..................... which means that THE TROUGHS OF ONE WAVE AND THE CREST OF ANOTHER overlap.
When the trough and the crest of wave overlap, it results in constructive interference and the amplitude of the two waves are added together  to form a larger amplitude.<span />
5 0
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. An atom of nitrogen has an atomic
GrogVix [38]

Here's the Answer !

Atomic number = no. of electrons = no. of protons, therefore :

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  • no. of protons = 7

and mass number = no. of protons + no. of neutrons

so,

  • 7 + no. of neutrons = 14

  • no. of neutrons = 7
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swat32

Answer:

its only 25

Explanation:

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