Question
In: Chemistry
In the production of printed circuit boards for the electronics industry, a 0.60-mm layer of copper...
In the production of printed circuit boards for the
electronics industry, a 0.60-mm layer of copper is laminated onto
an insulating plastic board. Next, a circuit pattern made of a
chemically resistant polymer is printed on board. The unwanted
copper is removed by chemical etching, and the protective polymer
is finally removed by solvents. One etching reaction is:
Cu(NH3)4Cl2(aq) + 4NH3(aq) + Cu(s) 2Cu(NH3)4Cl(aq)
A plant needs to manufacture 10,000 printed circuit boards,
each 8.0 x 16.0 cm in area. An average of 80.% of the copper is
removed from each board (density of copper= 8.96 g/cm3). What
masses of Cu(NH3)4Cl2 and NH3 are needed to do this? Assume 100%
yield .
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
In the production of printed circuit boards, errors in the alignment of electrical connections are a...
In the production of printed circuit boards, errors in the
alignment of electrical connections are a source of scrap. The
accompanying table shows the registration error and the temperature
used in the production of circuit boards in an experiment in which
higher cost material was used.
Registration Error
Temperature
−10.7
278
3.7
320
3.2
299
10.6
321
−13.8
271
6.2
293
13.7
324
A. Fit a quadratic regression model and state the quadratic
regression.
B. Perform a residual analysis on...
IQ Electronics, which assembles printed circuit boards, is considering the purchase of a new IC chip...
IQ Electronics, which assembles printed circuit boards, is
considering the purchase of a new IC chip placement machine. It has
a first cost of $300,000 and is expected to save them $125,000 per
year in labour and operating costs compared with the system they
have now. The life of the system is expected to be four years. The
salvage value of the machine is expected to be $100,000. IQ's
nominal tax rate is 40%, and the equipment CCA rate is...
Aba Manufacturing has contracted to provide Zyz Electronics with printed circuit ( PC ) boards under...
Aba Manufacturing has contracted to provide Zyz Electronics with
printed circuit ( PC ) boards under the following terms: (1)
100,000 PC boards will be delivered to Zyz in one month, and (2)
Zyz has an option to take delivery of an additional 100,000 boards
in three months by giving Aba 30 days notice. Zyz will pay $5.00
for each board that it purchases. Aba manufactures the PC boards
using a batch process, and manufacturing costs are as follows: (1)...
To automatically insert electronic components in printed circuit boards for a cell phone production line, a...
To automatically insert electronic components in printed circuit
boards for a cell phone production line, a $500,000 surface mount
placement (SMP) machine is being evaluated by a manufacturing
engineer at Motorolla. Over the 10-year planning horizon, it is
estimated the SMP machine will produce annual cost savings of
$92,500. The engineer estimates the machine will be worth $50,000
at the end of the 10-year period. Based on the firm’s 10% MARR, how
long does it take for the new SMP...
A semiconductor manufacturer produces printed circuit boards that are sampled to determine the thickness of their...
A semiconductor manufacturer produces printed circuit boards
that are sampled to determine the thickness of their copper
plating. The following statements create a data set named Trans,
which contains the plating thicknesses (Thick) of 50 boards:
3.412
3.45
3.551
3.451
3.60
3.462
3.586
3.645
3.252
3.62
3.606
3.634
3.852
3.56
3.342
3.341
3.444
3.774
3.632
3.199
3.71
3.654
3.723
3.981
3.934
3.708
3.934
3.315
3.762
3.223
3.469
3.481
3.515
3.535
3.46
3.575
3.488
3.515
3.484
3.482
3.517
3.483
3.467
3.467...
An on-line production of printed-circuit boards (PCBs) involves ten successive sequences (i = 1, 2, 3,...
An on-line production of printed-circuit boards (PCBs) involves
ten successive sequences (i = 1, 2, 3, …, 10) of
component-placement/assembly on the board. In a quality-control
effort, the board is tested for its integrity in each of ten
successive assembly-tasks. It is presumed that the reliability of
final, completed PCB depends on possible, failure-proneness
associated with each (successive) assembly-task involved. Table
given below shows the number of PCBs (ni) per successive
batch tested. Also shown in the table, is the...
Manchester Technology, Inc. manufactures several different types of printed circuit boards; however, two of the boards...
Manchester Technology, Inc. manufactures several different types
of printed circuit boards; however, two of the boards account for
the majority of the company’s sales. The first of these boards, a
television circuit board, has been a standard in the industry for
several years. The market for this type of board is competitive and
price-sensitive. Manchester plans to sell 79,000 of the TV boards
in 20x1 at a price of $450 per unit. The second high-volume
product, a personal computer circuit...
Manchester Technology, Inc. manufactures several different types of printed circuit boards; however, two of the boards...
Manchester Technology, Inc. manufactures several different types
of printed circuit boards; however, two of the boards account for
the majority of the company’s sales. The first of these boards, a
television circuit board, has been a standard in the industry for
several years. The market for this type of board is competitive and
price-sensitive. Manchester plans to sell 79,000 of the TV boards
in 20x1 at a price of $450 per unit. The second high-volume
product, a personal computer circuit...
All printed circuit boards (PCBs) that are manufactured at a certain plant are inspected. An analysis...
All printed circuit boards (PCBs) that are manufactured at a
certain plant are inspected. An analysis of the company’s records
indicates that 22% are flawed in some way. Of those that are
flawed, 84% are reparable and the rest must be discarded. If a
newly produced PCB is randomly selected, what is the probability
that it does not have to be discarded?
Please Solve Manually.
Case - PCB Electronics PCB Electronics is a contract manufacturer of printed circuit board assemblies that...
Case - PCB Electronics
PCB Electronics is a contract manufacturer of printed circuit
board assemblies that specializes in manufacturing and test
engineering support of complex printed circuit boards for companies
in the defense and medical instruments industries. The assembly
process begins with raw printed circuit boards, into which
preprogrammed robotic machines insert various integrated circuits
and other components, and then these parts are soldered onto the
board. The board is then tested before shipment to the
customer.
Four separate assembly...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Merger Analysis TransWorld Communications Inc., a large telecommunications company, is evaluating the possible acquisition of Georgia...
- Journal Entries and Trial Balance Elite Realty acts as an agent in buying, selling, renting, and...
- In racket Assume that the elements of a list are indexed starting with 1. Write a...
- Describe System Development Life Cycle (SDLC) and how it is used.
- What symbolism do you find in the play,Oedipus?
- • Using the Scanner class to obtain input from the user. • Using printf to output...
- In each of the following situations, develop a tentative plan for the client. List the various...
ADVERTISEMENT