Concept explainers
(a)
Interpretation:
Plated mass of silver should be determined.
Concept introduction:
- Current and time relate the total amount of charge.
- The total amount of charge relates moles of electrons as well.
Answer to Problem 13.107PAE
Solution:
Explanation of Solution
Use the given data to calculate the following:
1st Step: Calculate the total amount of charge applied
2nd Step: Calculate moles of electrons
3rd Step: Calculate total moles of Silver
Since the ratio is 1:1
4th Step: Calculate the mass of silver
(b)
Interpretation:
The number of plated silver atoms should be determined.
Concept introduction:
Use Avogrado’s Number to relate moles and atoms.
Answer to Problem 13.107PAE
Solution:
Explanation of Solution
Avogrado’s number relates the total amount of moles and atoms.
Then, use the definition of Avogrado’s number:
(c)
Interpretation:
The thickness of the plate should be calculated.
Concept introduction:
Use geometric figures, density and masses to relate each dimension.
Answer to Problem 13.107PAE
Solution:
Explanation of Solution
This consist of the following steps:
1st Step: Calculate total Area of the cylinder
2nd Step: Calculate the total volume of the plate
3rd Step: Calculate the total thickness
4th Step: Calculate the total atoms present
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Chapter 13 Solutions
Chemistry for Engineering Students
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