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Helen [10]
3 years ago
5

I will give BRAINIEst please!!! help meeee omg

Chemistry
1 answer:
Alexxandr [17]3 years ago
4 0

Answer:

(a)57.48 percent (b) 29.45 percent

Explanation:

copper(II) bromide is 29.45 percent copper and 71.54 percent bromine. so the first element percentage composition is always the percentage composition of the compound.

that goes same with sodium hydroxide. it  is 57.48 percent sodium, 40 percent oxygen, and 2.52 percent hydrogen.

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Answer:

The reaction with smallest value of K is :

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Explanation:

nFE^o_{cell}=RT\ln K

where :

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F = Faraday's constant = 96500 C

E^o_{cell} = standard electrode potential of the cell

R = Gas constant = 8.314 J/K.mol

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K = equilibrium constant of the reaction

As we cans see, that standard electrode potential of the cell is directly linked to the equilibrium constant of the reaction.

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So, the reaction with smallest value of electrode potential will have smallest value of equilibrium constant. And that reaction is:

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Explanation: I hoped that helped,

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