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liq [111]
2 years ago
8

I really need help with the first two fill in the blanks

Chemistry
1 answer:
postnew [5]2 years ago
3 0
Not sure about the first one , but the second one is ONE
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Why can scientists ignore the forces of attraction between particles in a gas under ordinary conditions
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<span>Scientists ignore the forces of attraction between particles in a gas under ordinary conditions</span><span> because the particles in a gas are apart and moving fast, rather than clustered and moving slow, therefore the forces of attraction are too weak to have a visible effect.</span>
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3 years ago
What are electron configurations?
olasank [31]

Answer:

In atomic physics and quantum chemistry , the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s 2 2s 2 2p 6, using the notation explained below.

Explanation:

i found it on google

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3 years ago
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Why is climate change a concern when it comes to animal behavior and ability to reproduce
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Answer:

hope this helps! :)

Explanation:

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3 years ago
How is energy related to the change of state represented by the model?
Cerrena [4.2K]

Answer:

Atoms gain energy as a solid changes to a liquid. If atoms energy during a change of state, they are pulled together by attractive forces and become more organized.

4 0
3 years ago
Purification of chromium can be achieved by electrorefining chromium from an impure chromium anode onto a pure chromium cathode
mylen [45]

Answer:

696 h

Explanation:

Let's consider the reduction of Cr³⁺.

Cr³⁺(aq) + 3e⁻ → Cr(s)

We can establish the following relations.

  • The molar mass of Cr is 52.0 g/mol.
  • 1 mol of Cr is deposited when 3 moles of e⁻ circulate.
  • 1 mole of e⁻ has a charge of 96468 c (Faraday's constant).
  • 1 A = 1 c/s
  • 1 h = 3600 s

<em>How many hours will it take to plate 13.5 kg of chromium onto the cathode if the current passed through the cell is held constant at 30.0 A?</em>

13.5 \times 10^{3} gCr.\frac{1molCr}{52.0gCr} .\frac{3mol/e^{-} }{1molCr} .\frac{96468c}{1mol/e^{-}} .\frac{1s}{30.0c} .\frac{1h}{3600s} =696 h

3 0
3 years ago
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