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UNO [17]
3 years ago
9

[03.04]When one atom of potassium (K) combines with one atom of fluorine (F), an ionic bond forms, resulting in potassium fluori

de (KF). Which of the following describes the arrangement of valence electrons in a bond between K and F?
The valence electrons are shared equally between K and F.
The valence electrons spend more time around the atom of K.
The valence electrons spend more time around the atom of F.
The valence electrons are given up by the K and gained by the F.
Chemistry
1 answer:
dybincka [34]3 years ago
3 0
Heyo, I believe that the answer would be D. The valence electrons are given up by the K and gained by the F.
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oxidation-reduction or redox reaction

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Answer:

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Partial pressure H₂ =  0.91 atm

Partial pressure CH₄ = 1.23 atm

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To determine partial pressure we sum the total moles in order to find out the total pressure

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P . 8 L = 1.4 mol . 0.082 L.atm/mol.K  . 300 K

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We apply the mol the fraction for the partial pressure

Moles x gas / total moles = partial pressure x gas / total pressure

Mole fraction N₂ → 0.700 /1.4 = 0.5

Partial pressure N₂ = 0.5 . 4.30 atm =2.15 atm

Mole fraction H₂  →  0.300 / 1.4 = 0.21

Partial pressure H₂ = 0.21 . 4.30 atm = 0.91 atm

Mole fraction CH₄ → 0.400 /1.4 = 0.28

Partial pressure CH₄ = 0.28 . 4.30 atm =1.23 atm

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hodyreva [135]

Answer:

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M= 44/1.5625

M= 28.16 g/mol

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