Engineering

8 months ago

Hat is the partition coefficient for 3-nitroaniline between diethyl ether and water and benzoic ...

Engineering-Organic Chemistry related questions

Use information available in the Merck Index, and show your calculations to answer the following questions:

a) What is the partition coefficient for 3-nitroaniline between diethyl

cloveb 1195 8 Replies

Toph Beifong

A year ago

A cereal is being dried in a vertical drier by air flowing countercurrent to the cereal. To prevent

A cereal is being dried in a vertical drier by air flowing countercurrent to the cereal. To prevent breakage of the cereal flakes, exit air from the drier is recycled. For W = 1000 kg/h of wet cereal fed to the drier, calculate the input of moist fre

90daytona 547 2 Replies

candelario Ocaña Vazquez

A year ago

Can we remake plastic into a rocket fuel?

Have you heard about the new special type of rocket fuel that is made from plastic waste? One company uses particular kinds of plastic to remake them in rocket fuel

bear56 323 2 Replies

HarrietCole

A year ago

If these materials were manufactured into a tubular shape and used to replace a section of the vascu

If these materials were manufactured into a tubular shape and used to replace a section of the
vascular system, would degradation be more likely to affect the inner surface or outer surface
of the graft?

Anonymous 181 1 Reply

Anonymous

A year ago

Further Engineering Mathematics

1. Use the Taylor series centred around a=0 to write the first four terms of the expansion of f(x) = 1/(1+x) and hence write its general formula.

2. A. Write down the first four terms of the Maclaurin expansion for f(x)=ex.
B. Calcul

kennyboii 314 7 Replies

anonymous661

2 years ago

Acid / base

The extraction of acid base.

Fatimaalmasrii 152 1 Reply

2 years ago

What is the partition coefficient for 3-nitroaniline between diethyl ether and water (at room ...

Use information available in the Merck Index, and show your calculations to answer the following questions:

a) What is the partition coefficient for 3-nitroaniline between diethyl ether and water (at room temperature and pH > 8)?

1 2

cloveb 4473 22 Replies

Fatima Almasri

2 years ago

Fixing Car Wiper blade on Driver's right/left glass window pane

https://www.cars24.com/blog/monsoon-car-care-5-important-tips-for-windshield-wiper-of-your-car/

During monsoon season (Heavy rainfall) causes the window glass pane filled with water which is on the right hand side of the Driver in a

prashantakerkar 344 5 Replies

2 years ago

After settling, both layers are clear colourless liquids. How do you know which layer is the organ

Suppose that you have a reaction mixture which consists of 14.2 g of CsCl and 12.0 g of an interesting organic compound dissolved in 100 mL of water. You would like to have the pure organic compound, separate from water and salt, so you decide

cloveb 243 1 Reply

2 years ago

Discuss the purity of each of the recovered compounds (are they pure? how do you know?)

cloveb 244 1 Reply

2 years ago

Write one clear paragraph describing the success (or lack thereof) of your distillation. Based on a

Write one clear paragraph describing the success (or lack thereof) of your distillation. Based on all available experimental data (fraction volumes, boiling points, and corrected refractive indices), was your distillation successful in isolatin

cloveb 233 1 Reply

2 years ago

Why is it necessary to reduce the rate of heating to ~1 to 2 °C per minute near the actual melting ...

Why is it necessary to reduce the rate of heating to ~1 to 2 °C per minute near the actual melting point? Explain what effect a faster rate of heating might have on the observed melting point range.

cloveb 204 2 Replies

2 years ago

Discuss the yield and purity of your isolated product. How can you determine the Identity/purity o

Discuss the yield and purity of your isolated product. How can you determine the
Identity/purity of the products? What factors contributed to poor yield/purity? If there were more time/resources, what could have been done to i

cloveb 245 2 Replies

2 years ago

If you were to repeat this experiment using mixtures of hexane and acetone (in the same proportions)

If you were to repeat this experiment using mixtures of hexane and acetone (in the same proportions) as eluent (i.e. replaced the ethyl acetate with acetone) what effect would you predict this change would have on the Rf values for the analgesics?

cloveb 269 2 Replies

2 years ago

What is the general effect of increasing the proportion of ethyl acetate in the eluent on the Rf of

What is the general effect of increasing the proportion of ethyl acetate in the eluent on the Rf of the five analgesics studied in this lab?

cloveb 277 1 Reply

2 years ago

Describe how TLC could be used to confirm whether a compound was pure or not. Were all of the standa

Describe how TLC could be used to confirm whether a compound was pure or not. Were all of the standard analgesic solutions provided for you in this experiment pure?

cloveb 217 1 Reply

2 years ago

Let’s model the Earth’s magnetic field as resulting from a current loop inside the earth, in the ...

Let’s model the Earth’s magnetic field as resulting from a current loop inside the earth, in the
plane of the equator. Specifically, assume the current loop has radius a = RE/2 and its center
coincides with the center of the earth. Given

cloveb 212 1 Reply

2 years ago

Astronauts on the first trip to Mars take along a pendulum that has a period on earth of 1.50s. The

Astronauts on the first trip to Mars take along a pendulum that has a period on earth of 1.50s.
The period on Mars turns out to be 2.45 s. What is the acceleration due to gravity on Mars?

cloveb 179 1 Reply

2 years ago

What iis Hysteresis

Hysteresis is the difference of the two readings (increasing and
decreasing trends) of the same pressure. You can divide the difference
by the average of the 2 readings to show the hysteresis as fraction of
the pressure at a particular

cloveb 143 N/A

2 years ago

Technician A says a wobble plate moves some compressors' pistons. Technician B...

Technician A says a wobble plate moves some compressors' pistons. Technician B says some swashplate compressors have double-ended pistons. Who is correct?
   a.
Technician B only
   b.
Technician A only
   c.
Neither A

crusermilt 647 1 Reply

2 years ago

A reverse-biased silicon diode is connected in series with a 12 V source and a resistor.The voltage

Select one:

A.
0.7 V.

B.
12 V.

C.
0.3 V.

D.
0 V.

Gixxer089 298 2 Replies

2 years ago

The forward voltage across a conducting silicon diode is about

Select one:

A.
1.3 V.

B.
0.3 V.

C.
-0.3 V.

D.
0.7 V.

Gixxer089 278 3 Replies

2 years ago

On diode check, a shorted diode will measure

Select one:

A.
0.3 V.

B.
0.7 V.

C.
0 V.

D.
0.79 V.

Gixxer089 208 2 Replies

2 years ago

A reverse-biased diode has the ________ connected to the positive side of the source, and the _____

Select one:

A.
cathode, base

B.
cathode, anode

C.
base, anode

D.
anode, cathode

Gixxer089 250 2 Replies

2 years ago

A nonconducting diode is ________ biased.

Select one:

A.
forward

B.
poorly

C.
inverse

D.
reverse

Gixxer089 194 2 Replies

2 years ago

What must be used in series with a forward-biased diode to prevent damage due to excessive current?

Select one:

A.
Resistor

B.
NC switch

C.
Nothing is required

D.
Ammeter

Gixxer089 165 1 Reply

2 years ago

A beaker filled with an equimolar liquid mixture of ethyl alcohol and ethyl acetate evaporates

A beaker filled with an equimolar liquid mixture of ethyl alcohol and ethyl acetate evaporates ast 0oC into still air at 101kPa total pressure. Assuming Raoul's law apples, what will be the composition of the liquid remaining wh

90daytona 1067 1 Reply

2 years ago

Why did my roller luggage's wheels stop turning smoothly?

Two weeks ago, my carry on worked perfectly. But last week the detachable wheels stopped rotating smoothly, when I tried to glide my carry on. The wheels budge JUST A TAD when you push them hard, but it sh

scherz0 318 1 Reply

2 years ago

The numerical equation from Qin Jiushao’s Shushu jiuzhang analyzed in...

20. The numerical equation from Qin Jiushao’s Shushu jiuzhang analyzed in Section 7.4.2 came from the geometrical problem of finding the area of a pointed field. If the sides and one diagonal are labelled as in Figure 7.22 (shown below)

victoria1 680 2 Replies

Alyssa P

3 years ago

Aeroplane tail wing top support fixed with logo design.

What are the advantages provided by having a Tail wing support fixed (One having a logo of the airline carrier) wing on the aircraft top?.

What is the aviation technical term for the same?.
Is it Wing, Glider, Shaft etc?

prashantakerkar 223 N/A

prashantakerkar

3 years ago

Private charter planes or jets flight naming conventions.

https://blueskypit.com/2020/03/09/deciphering-the-digits-in-your-flight-number/

Do private charter planes & Jets owned require a mandatory three digit or four digit flight number with a flight naming convention similar to Commercial ai

prashantakerkar 168 N/A

prashantakerkar

3 years ago

Transition from Left Hand drive to Right Hand Drive Car Vehicle

I would like to know the following information.

1 By Default, a Car Automobile is manufactured as Left hand or Right hand drive. In terms of engineering efforts, how easy or difficult is the transition from Left hand to Right hand drive an

prashantakerkar 256 2 Replies

prashantakerkar

3 years ago

7 Levers Mechanical Lock.

Attached image of a 7 Levers Mechanical Lock.

Theoretically and Practically, How many Levers Mechanical Lock can be created?

I.e. 10, 15, 20 ....

Thanks & Regards,
Prashant S Akerkar

Post Me

prashantakerkar 285 3 Replies