Answer:
91hours
Explanation:
Firstly, we calculate the quantity of electricity passed.
Q = It
Q = 34.5t
Since we are dealing with cu2+
Cu2+ + 2e- ———> Cu
From the second law of electrolysis, 1 mole of copper ion will need 2 moles of electrons and thus would be needing half faraday of electricity.
Now one faraday would contain 96500C of electricity, 0.5F would contain = 48,250C of electricity .
The number of moles of copper thus deposited = 34.5t/48,250
We know that the mass of copper deposited equals no of moles of copper multiplied by its atomic mass
15kg = 34.5t/48250 * 64
15,000 * 48250 = 34.5t * 64
t = 327,785s
Converting this to hours means we divide by 3,600
327,785/3600 = 91hours
Answer:
Kb =
Explanation:
For a weak organic base, the formula to find is given by:
where c is the concentration of base.
Here c=
Substituting the above values in the formula,we get:
Hence:
Kb =
Answer:
From least complex to most complex, the answer would be: cell - tissue – organ - system
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