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Eddi Din [679]
3 years ago
12

How is it possible for someone to put an ear to a wall and hear someone in the next room?

Chemistry
1 answer:
kvasek [131]3 years ago
4 0
A spund waves can travel through ALMOST everything.
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Calculate the standard cell potential at 25 ∘c for the reaction x(s)+2y+(aq)→x2+(aq)+2y(s) where δh∘ = -793 kj and δs∘ = -319 j/
QveST [7]
First we will calculate free energy change:
ΔG₀ = ΔH₀ - (T * ΔS₀)
        = - 793 kJ - (298 * - 0.319 kJ/K) = - 698 kJ
We know the relation between free energy change and cell potential is:
ΔG₀ = - n F E⁰ where
F = Faraday's constant = 96485 C/mol
n = 2 (given by equation that the electrons involved is 2)
ΔG₀ = - 2 x 96485 x E⁰
- 698 kJ = - 2 x 96485 x E⁰
E⁰ = (698 x 1000) / (2 x 96485) = 3.62 volts   
 
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Which term best describes the molecular geometry of ethylene, C₂H₄?
marusya05 [52]
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A molecule is polar when:
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6 0
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