tumadreeve7852

15.01.2020 • 

Chemistry

Which statement describes the vsepr theory?

a- electron pairs in the valence shell of an atom have a tendency to attract other nearby electron pairs.

b- electrons in the valence shell of an atom exert a repulsive force on other atoms while forming a chemical bond.

c- electron pairs in the valence shell of an atom exert a repulsive force on all other electron pairs in the valence shell of the atom.

d- electrons in the valence shell exert a repulsive force while completing their octet during the formation of chemical bond.

Ответ:

magicallyhello

15.01.2022

Chemistry

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I believe the correct answer from the choices listed above is option C. The statement that describes the VSEPR theory would that electron pairs in the valence shell of an atom exert a repulsive force on all other electron pairs in the valence shell of the atom. 

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Ответ:

mallyosburn

23.10.2020

Chemistry

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Heat Flux = - 22.5 W/m²

Explanation:

We can use Fourier's Law of Heat Conduction:

q = -kAΔT/t

q/A = -KΔT/t

where,

q/A = Heat Flux = ?

K = Thermal Conductivity = 0.3 W/m.K

ΔT = Change in Temperature = 20°C - 5°C = 15K

t = Thickness = 0.2 m

Therefore,

Heat Flux = -(0.3 W/m.k)(15 k)/(0.2 m)

Heat Flux = - 22.5 W/m²

Negative sign shows the heat flowing out of the system.

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