Answer:
I know A is correct but not so sure about B, like I don't know if B is correct or wrong
An electrochemical cell is composed of pure copper and pure cadmium electrodes immersed in solutions of their respective divalent ions. For a 6.5 × 10-2 M concentration of Cd2+, the cadmium electrode is oxidized, yielding a cell potential of 0.775 V. Calculate the concentration of Cu2+ ions if the temperature is 25°C.
From the calcuation, the concentration of the copper II ion is 0.98 M.
What is an electrochemical cell?An electrochemical cell is one in which current is produced by means of a chemical reaction. In this cell, the cell reaction is;
Cd(s) + Cu^2+(aq) ----> Cd^2+(aq) + Cu(s)
E°cell = 0.34 V - (-0.40V) = 0.74 V
Using the Nernst equation;
0.775= 0.74 - 0.0592/2 log(6.5 × 10-2)/[Cu^2+]
0.775 - 0.74 = - 0.0592/2 log(6.5 × 10-2)/[Cu^2+]
0.035 = -0.0296 log(6.5 × 10-2)/[Cu^2+]
0.035 /-0.0296 = log(6.5 × 10-2)/[Cu^2+]
-1.18 = log(6.5 × 10-2)/[Cu^2+]
Antilog (-1.18) = (6.5 × 10-2)/[Cu^2+]
0.066= (6.5 × 10-2)/[Cu^2+]
[Cu^2+] = (6.5 × 10-2)/0.066
[Cu^2+] =0.98 M
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What is txv to hvac parts and etc???
Answer:
This is for all hvac parts lol
Answer:
Units larger than a terabyte include a petabyte, exabyte, zettabyte, yottabyte and brontob
A company intends to market a new product and it estimates that there is a 20% chance that it will be first in the market
and this will give 2 million dollar revenue in its first year. However, if it is not the first in the market it will only be .5 million.
What is the EMV?
The EMV - Ending Market Value is given as:
$2,400,000.
The EMV is given as:
BMV x (i + r); Where
BMV is the Beginning Market Value; and
r is the interest rateor percentage given.
Hence the EMV = 2,000,000 x ( 1 + 20%)
= 2,000,000 x 1.2
= $ 2, 400,000.
It is to be noted that the BMV is the Beginning Market Value which is the value of an investment at the start of the business period.
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project engineer
planning engineer
chief engineer
field engineer
office engineer
heads the engineering department and
ensures that it operates smoothly
performs administrative work to ensure
projects comply with engineering codes
and standards
performs a variety of onsite tasks, such
as supervision and equipment installation
m. All rights reserved
Explanation:
1)Chief Engineer
2)Project Engineer
3)Field Engineer
I hope it helped you
the engine needs a free flow of clean air to operate correctly and with low emissions. True or False
Answer:
true
Explanation:
A(n) ______ is used to measure fluid flow in engineering
Answer:
A pitot tube is used to measure fluid flow in engineering
Please help me with this question
Answer:
4.2
Explanation:
The "allowance" is the difference between the maximum shaft size and the minimum hole size.
maximum shaft = C +D = 8.5 +0.1 = 8.6
minimum hole = A -B = 4.8 -0.4 = 4.4
Allowance = 8.6 -4.4 = 4.2
__
For an interference fit, the allowance is negative.
How can the use of local materials improve the standard of living of Filipinos?
Which of the following is NOT associated with Urban Sprawl?
The option that is not associated with the given term called urban sprawl is; Option A: Blocking high views
What is Urban Sprawl?
Urban sprawl is defined as the rapid expansion of the geographic boundaries of towns and cities which is often accompanied by low-density residential housing and increased reliance on the private automobilefor movement.
Looking at the given options, "blocking high views" is the option that is not typically a problem associated with urban sprawl because urbanization usually takes place on relatively flat levels.
The missing options are;
a. blocking high views
b. destroying animal habitats
c. overrunning farmland
d. reducing green space
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A gaseous mixture contain 32.9 mol % He, 40.7 mol % N_{2} and 26.4 mol % Ar. Determine the composition of this mixture on a mass basis based on the molecular weight given: MW(He) = 4.003 , MW (N_{2}) = 28.02 MW(Ar) = 39.95
The composition of the mixture on a mass basis are as follows:
He = 131.70 gN2 = 1140.41 gAr = 1054.68 gnumber of moles = mass of substnce / molar mass
molar mass and molecular weight has equal numerical values therefore
Number of moles = mass of substnce / molecular weight
mass of substance = number of moles * molecular weight
the moles are expressed in percentage hence the total moles should be 100
check: 32.9 + 40.7 + 26.4 = 100
He
mass of substance = 32.9 * 4.003 = 131.6987 g
[tex]N_{2}[/tex]
mass of substance = 40.7 * 28.02 = 1140.414 g
Ar
mass of substance = 26.4 * 39.95 = 1054.68 g
7. If you can't ignore a distraction, what should you do?
A. Take care of it at your next planned stop
B. Pull over
C. Take no more than five seconds to handle it (tune radio, answer text, etc.)
D. Both A and B
If you can't ignore a distraction, as a driver you should: D. Both A and B.
What is a distraction?A distraction can be defined as any form of event that is capable of making a driver to loose concentration or lure his or her eyes away from the road.
This ultimately implies that, a distraction can cause a driver to experience a road accident (car crash) if not properly managed or ignored.
In conclusion, if you can't ignore a distraction, as a driver you should pull over or take care of it at your next planned stop.
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A closed thermodynamic cycle consists of two isobaric and two isochoric processes. The processes operate between 0.43 MPa and 4.3 MPa and 0.28 m3 and 2.9 m3. Determine the total work (with appropriate sign) for one complete cycle, when the cycle operates in the clockwise direction. Provide your result in MJ.
Answer:
Explanation:
For first isobaric process (expansion with constant pressure):
[tex]W_{1}=P_{1}(V_{2}-V_{1})=(0.43\times 10^{6})(2.9-0.28)=1.1266 \times 10^{6} J=1.1266 MJ(+) (Expansion)[/tex]
Now, for the first isochoric: [tex]W_{2}=0[/tex], and [tex]Q_{2}=\Delta U=U_{3}-U_{2}[/tex]
For the second isobaric process (compression with constant pressure):
[tex]W_{3}=P_{2}(V_{1}-V_{2})=(4.3\times 10^{6})(0.28-2.9) =-11.266\times 10^{6}J=-11.266 MJ (Compression)[/tex]
For the last isochoric: [tex]W_{4}=0, Q_{4}=\Delta U=U_{4}-U_{3}[/tex]
So, the total work per cycle: [tex]W=W_{1}+W_{2}+W_{3}+W_{4}=1.1266+0-11.266+0=-10.1394 MJ[/tex]
Assume you have four fins, each with a mass of 8. 0 grams. What is the total weight of these four fins? (Hint: watch your units!) PLEASE HELP ASAP! I have a 0% in this class
Answer:
0.314 kg
Explanation:
[tex]\frac{8}{1000}[/tex] x 4 x 9.81
Answer:
.3139 joules
Explanation:
Weight in the metric system is ma
you have 4 fins that have MASS of 8 grams each
or 32 grams which is .032 kg
WEIGHT would be .032 kg * 9.81 m/s^2 = .31392 j
The PCV valve controls which emissions?
Answer:
The PCV reduces blowby emissions from the engine.
What should you do when operating in conditions of reduced visibility.
Answer:
You shold wear Gogles
Explanation:
It is harder to see with no gogles
When operating in low-visibility situations, it is critical to take necessary precautions to preserve safety and retain situational awareness. When operating in low-visibility situations, it is critical to take necessary precautions to preserve safety and retain situational awareness.
Slow down: Reduce your speed to compensate for decreased vision. This provides you with additional time to respond to unanticipated obstructions or threats. Increase your following distance by leaving a bigger gap between your car and the vehicle ahead of you. This acts as a buffer zone and allows for more stopping distance.
Turn on your headlights and fog lights, even during the day, to improve visibility for yourself and other vehicles. Use fog lights if your car has them, as they are meant to penetrate fog and provide improved illumination. Use windscreen wipers and defrosters: Make sure your windscreen wipers are in good working order and that the appropriate speed setting is used to keep the windscreen clear. To prevent window fogging, turn on the defroster if necessary.
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Design an algorithm for computing √n
for any positive integer n. Besides
assignment and comparison, your algorithm may only use the four basic
arithmetical operations.
Which of the following elements would make a good insulator?
a. Silver
b. Silicon
C. Glass
d. Both a and b.
Answer:
Glass
Explanation:
Please mark me the brilliant
Find the magnitude of the two pulling forces P and Q when their resultant is 50 N at 20° with Q. P 20°
Technician A says that a range shift is used to select high or low gear ratios within the transfer case. Technician B says that a mode shift is used to select two wheel drive or four wheel drive. Which technician is correct
Technician A says that a range shift is used to select high or low gear ratios within the transfer case is true while Technician B is false.
What is this shift about?A range shift is known to often take place when there is either high or low speed ratio of the given transfer case that is known to be selected.
Note that A range shift arrangement is known to be seen for moving a gear reduction unit that is found between a low-range operating speed and also that of a high-range operating speed.
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What action control to move the rudder from one point to the other?
The action control to move the rudder from one point to the other is doen when The rudder, when turned to starboard, produce a force that is towards the port (called the rudder force).
What controls the rudder of a ship?In a vessel or ship, found in small craft, the rudder is known to be operated manually through the use of a handle that is called a tiller or helm.
In a bigger vessels, the rudder is known to be turned through the use of an hydraulic, steam, or electrical machinery. The first type of rudder was side to be a paddle or oar.
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A liquid jet vj of diameter dj strikes a fixed cone and deflects back as a conical sheet at the same velocity. find the cone angle θ for which the restraining force f = (3/2)rhoajvj^2 .
Answer:
lol i cant real it sorry
Explanation:
Which factor has the most significant impact in design?
a.
architectural design
b.
climate
c.
function
d.
cost
D) cost
The fund available for a project is the first factor to be considered to ensure that the project comes to reality and serve it’s purpose
Answer:
Function
Explanation:
Plato
Describe why the motion of a follower acted on by a cam is periodic motion.
A capacitor is connected across an ac source. suppose the frequency of the source is doubled. what happens to the capacitive reactance of the capacitor?.
Answer:
Explanation:
The capacitive reactance of the capacitor is determined by [tex]X_{C}=\frac{1}{\omega C}[/tex]
When [tex]f'=2f \rightarrow \omega' =2\omega[/tex]
and [tex]X_{C}'=\frac{1}{2}X_{C}[/tex]
(The capacitive reactance will be reduced into 1/2 times of the previous capacitive reactance)
what is time and energy
Answer:
Explanation:
well time is like 12 : 30 or like 3:00
energy in what you use to power your homes
What do we mean by “whiteness” and how does that
determine/influence our society?
Answer:
whiteness refers to white people(WHITE americans), back then white people got all the good stuff while colored people (meaning everyone who is not white) got old breaking down things. This influenced our society back then and made people think that white people are way better than colored. Which is SO NOT true, everyone is the same
Which of the following is an example of a hardwood? A maple B spruce C pine D fir
Answer:
A. Maple
Explanation:
Maple is a hardwood.
Hope that helps!
Briefly explain the four (4) main classification of rural latrine in Ghana and give example each.
Answer:
Temporally pit latrine ,improved latrine,ordinary latrine
Explanation:
l think the temporally latrine are used for camp ,vacation. improved latrine are at home for those who can afford. an ordinary latrine is used by people who can not afford money for removing fieces in the improved or temporally latrine
A farmer has 12 hectares of land on which he grows corn, wheat, and soybeans. It costs $4500 per hectare to grow corn, $6000 to grow wheat, and $5000 to grow soybeans. Because of market demand the farmer will grow twice as many hectares of wheat as corn. He has allocated $6,375,000.00 for the cost of growing his crops. How many hectares of each crop should he plant?
The number of hectares of each crop he should plant are; 250 hectares of Corn, 500 hectares of Wheat and 450 hectares of soybeans
How to solve algebra word problem?
He grows corn, wheat and soya beans on the farm of 1200 hectares. Thus;
C + W + S = 12 ----(1)
It costs $45 per hectare to grow corn, $60 to grow wheat, and $50 to grow soybeans. Thus;
45C + 60W + 50S = 63750 -----(2)
He will grow twice as many hectares of wheat as corn. Thus;
W = 2C ------(3)
Put 2C for W in eq 1 and eq 2 to get;
C + 2C + S = 1200
3C + S = 1200 -----(4)
45C + 60(2C) + 50S = 63750
45C + 120C + 50S = 63750
165C + 50S = 63750 ------(5)
Solving eq 4 and 5 simultaneosly gives;
C = 250 and W = 500
Thus; S = 1200 - 3(250)
S = 450
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explain the distinction between a real address and a virtual address?