Methyl methacrylate was polymerized at a mass concentration of 200g dm^-3 in toluene using azobisisobutyronitrile as initiator at a mass concentration of 1.64 X 10^-2 g dm^-3 and a reaction temperature of 60 degree C. Calculate the initial rate of polymerization and the molar mass of the poly(methyl methacrylate) formed in the initial stages of the reaction given that the relevant rate coefficients at 60 degrees C are:
Initiator dissociation: k sub d= 8.5 X 10 ^-6 reciproical seconds
Propagation k sub p= 8.33 dm^3 mol^-1 s^-1
termination, k sub t= 9.3 X 10 ^6 dm ^3 mol ^-1 s^-1
transfer to monomer k sub trm= 3.93 X 10 ^-3 dm^3mol^-1s^-1
Transfer to solvent k sub trS= 7.34 X 10 ^-3 d, ^3 mol ^-1 s^-1
Assume that the initiator efficiency f=0.7 that the termination by combinaition is negligible, and that the density of the initial solution of MMA in toluene is 860 g dm^-3
In: Chemistry
A 14 kg projectile is launched at 380 m/s at a 55 ∘ angle to the horizontal. At the peak of its trajectory it collides with a second projectile moving horizontally, in the opposite direction, at 140 m/s . The two stick together and land 9.8 km horizontally downrange from the first projectile's launch point.
Find the mass of the second projectile.
In: Physics
In: Biology
1. (a) Provide the formula for calculating Price Elasticity of Demand.
(b) Explain each variable in the formula you provided above.
2. Explain how the formula is used to make decisions regarding increasing revenue
In: Economics
Write the code of:
– an abstract class called Creature
– classes Player and Monster (derived from Creature)
– classes WildPig and Dragon (derived from Monster)
In the Creature class
– Define a string member, Creature Name, to store the class
Creature’s name.(name should be dynamically allocated)
– Define Two virtual pure functions
• void DoAction() : Print the action of the object, and the actions
have to be different from different classes.
• void DrawOnScreen() : Print the object’s name and call DoAction()
belonging to the same class.
The class definition of Creature is:
Question: Implement the class Player, Monster, Dragon and Wildpig
so that when execution the following code, the counsel shows the
execution result as the following:
Counsel output:
Player <Kick_Ass> is attacking!!
Monster<UFO> is doing monster stuff!!
WildPig <I'm_Hungry> is Running!!
Dragon<I'm_the_Boss> is breathing Fire!!
Main function:
//==================================================
int main(){
Player hero("Kick_Ass");
Monster mon("UFO");
WildPig pig("I'm_Hungry");
Dragon drag("I'm_the_Boss");
Creature* object[4];
object[0]=&hero;
object[1]=&mon;
object[2]=&pig;
object[3]=&drag;
object[0]->DrawOnScreen();
object[1]->DrawOnScreen();
object[2]->DrawOnScreen();
object[3]->DrawOnScreen();
return0;
}
c++
In: Computer Science
Use Coulomb's law to estimate the average distance between the sodium nucleus and the 3s electron.
In: Chemistry
The intangible assets section of Grouper Corporation’s balance
sheet at December 31, 2017, is presented here.
| Patents ($75,700 cost less $7,570 amortization) |
$68,130 |
|
| Copyrights ($52,000 cost less $36,400 amortization) |
15,600 |
|
| Total |
$83,730 |
The patent was acquired in January 2017 and has a useful life of 10
years. The copyright was acquired in January 2011 and also has a
useful life of 10 years. The following cash transactions may have
affected intangible assets during 2018.
| Jan. | 2 | Paid $63,000 legal costs to successfully defend the patent against infringement by another company. | |
| Jan.– | June | Developed a new product, incurring $254,000 in research and development costs. A patent was granted for the product on July 1, and its useful life is equal to its legal life. Legal and other costs for the patent were $40,000. | |
| Sept. | 1 | Paid $63,500 to a quarterback to appear in commercials advertising the company’s products. The commercials will air in September and October. | |
| Oct. | 1 |
Acquired a copyright for $295,000. The copyright has a useful life and legal life of 50 years. |
Prepare journal entries to record the 2018 amortization expense for intangible assets. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts.) How is it calculated?
| Date | Account Titles and Explanation | Debit | Credit |
| Dec 31 | Amortization Expense | ||
| Patents | |||
|
(To Record Amortization of Patents) |
|||
| Dec 31 | Amortization Expense | ||
| Copyrights | |||
| (To Record Amortization of Copyrights) |
In: Accounting
Create program in Python (using import turtle):
1)includes draw_background function
2)draw_background function uses a loop to draw a background from at least one shape
3)uses at least 2 turtles to draw scent
4)includes draw_shape function
5)includes function to draw primary object
6)includes main method which creates the drawing
In: Computer Science
|
ANOVA |
||||
|
df |
SS |
MS |
F |
|
|
Regression |
1 |
372.707 |
372.707 |
42.927 |
|
Residual |
15 |
130.234 |
8.682 |
|
|
Total |
16 |
502.941 |
||
|
Coefficients |
Standard Error |
t Stat |
P-value |
|
|
Intercept |
45.623 |
3.630 |
12.569 |
0.000 |
|
Price |
0.107 |
0.016 |
6.552 |
0.000 |
In: Math
These questions are based off the new 2020 Mercedes C-class model commercial- The ad is called, "Non-stop Engineering tv commercial.
a. Identify metrics of success/failure. Use secondary sources
and/or corporate communications to support your metrics choices.
(Talk about social media insights, sales, etc.)
b. Based on those metrics, evaluate the effectiveness of the
television campaign. Thank you!
In: Economics
Using the table and information below to calculate the following: The value of the stock is currently $87, and expiration is Jan 16, Feb 16, and March 16. Briefly discuss your results.
|
Strike |
Jan call |
Feb call |
March call |
Jan put |
Feb put |
March put |
|
80 |
4.0 |
5.5 |
7.1 |
1.8 |
1.9 |
3.0 |
|
85 |
3.2 |
4.3 |
6.0 |
2.3 |
3.5 |
4.0 |
|
90 |
2.6 |
3.8 |
4.4 |
3.2 |
4.0 |
5.8 |
|
95 |
1.9 |
2.1 |
3.2 |
4.5 |
5.2 |
6.9 |
In: Finance
In: Chemistry
1.50 × 1020electrons flow through a cross section of a 4.50-mm-diameter iron wire in 6.00 s .
What is the electron drift speed?
In: Physics
A researcher surveyed 50 local households and found they had their TV’s on an average of 47.3 hours in a week. Assume the time Americans have their TV’s turned on is normally distributed with a standard deviation of 6.2 hours.
Construct a 95% confidence interval estimate for the mean time Americans have their TVs turned on in a week.
Show your work for full credit.
In: Math
You are a member of an alpine rescue team and must get a box of supplies, with mass 2.20 kg , up an incline of constant slope angle 30.0 ∘ so that it reaches a stranded skier who is a vertical distance 3.50 m above the bottom of the incline. There is some friction present; the kinetic coefficient of friction is 6.00×10−2. Since you can't walk up the incline, you give the box a push that gives it an initial velocity; then the box slides up the incline, slowing down under the forces of friction and gravity. Take acceleration due to gravity to be 9.81 m/s2.
Part A. Use the work-energy theorem to calculate the minimum speed v that you must give the box at the bottom of the incline so that it will reach the skier.
In: Physics