sonurana4949

A sample of 0.2140 g of an unknown monoprotic acid was dissolved in 25.0 mL of water and titrated with 0.0950MNaOH. The acid required 27.4 mL of base to reach the equivalence point.

What is the molar mass of the acid?

After 15.0 mL of base had been added in the titration, the pH was found to be 6.50. What is the Kafor the unknown acid?

1: Prove that every group whose order is a prime number is cyclic

2 And hence, prove that every group of order less than 6 is abelian.

How to print a hanoi tower using python?

What is an array? Give examples.

Prove that for every natural number n > 1 there is a non abelian group of order n^3

-Show that GL_n (F) is non-abelian for any n>_ 2 and any F.

- if l F l = q is finite prove that l GL_n (F) l < ((q)^n)^2.

Caffeine is widly soluble in ethanol, but you cannot use ethanol in the place of dichloromethane to extract the caffeine from tea. Why?

1. Complete the following statements regarding the extraction ofcaffeine from tea leaves

a. In theextraction of caffeine from tea leaves, why is water used for theextraction and not CH₂Cl₂ (dichloromethane ormethylenechloride)?

b. In theextraction of caffeine from tea leaves, what is the purpose ofadding CaCO₃

(calciumcarbonate) to the mixture

A children’s pain relief elixir contains 80. mg acetaminophen per 0.50 teaspoon. The 
dosage recommended for a child who weighs between 24 and 35 lb is 1.5 teaspoons. 
What is the range of acetaminophen dosages, expressed in mg acetaminophen/kg body 
weight, for children who weigh between 24 and 35 lb?

A meter stick has a mass of 153.45g. A paper clip of 8.5g isattatched at the end of the stick (at 100cm).

A meter stick hanger of 50.0g is attatched at the 30cm mark.

A weight hanger of 130.0 g was attatched and positioned so thatthe system was in equilibrium. The system was in equilibrium withthe weight hanger attatched at 2.2cm.

Use this information to find the center of mass of the meterstick + binder clip system.

Why should expecting mothers buy maternity cocktail dresses from Model Chic in Australia?

Case (IV)
With the suspension point 30cm from the left edge of the meter stick, hang a 200g mass 10cm from the left edge of the stick. Calculate the mass you must hang at a point 40cm to the right of the pivot point such that the stick hangs level and write it on the sketch.

Calculate the area of each of the polygons with the following dimensions.

1. Triangles

1. 1. B = 4in, H = 5in
2. 1. B = 6ft, H= 10ft
   2. B = 12m, H = 15m
   3. Application: Sandy is making tablecloths in the shape of triangles. She needs to make two triangle tablecloths for one table. The triangles have base of 2 ft and a height of 4 ft. What is the total area of the triangle tablecloths for one table?

2. Parallelogram (H = height) and (B = base)

1. 1. H = 9in, B = 6in
2. 1. H = 5 ft, B = 2ft
3. 1. H = 7yds, B = 3yds
   2. Application: If a parallelogram has a base of 13 mm and an area of 78 mm2 what is the height?

Hint: Use the formula. Substitute the given values and then solve as an equation.

3. Rectangle (L = length) and (w = width)

1. 1. rect. DKIF with L = 8 ft and w = 6 ft
2. 1. rect. AOPU with L = 13 ft and w = 5 ft
   2. Application: Charles is paining the den. Two walls are 9 ft high and 15 ft long. The other two walls are 8 ft high and 10 ft long. Charles bought one gallon of paint that will cover 440 square feet of wall space. Does he have enough paint? Explain.

4. Rhombus ( d1 = diagonal 1) (d2 = diagonal 2)

1. 1. rhombus with d1 = 12 yds and d2 = 12 yds
2. 1. rhombus with d1 = 10 ft and d2 = 25 ft
3. 1. rhombus with d1 = 16 in and d2 = 22 in
   2. Application: a rhombus as an area of 72 ft and the product of the diagonals is 144. What is the length of each diagonal?

5. Trapezoid ( b1 = base 1) (b2 = base 2) (H = height)

1. 1. b1 = 6 ft, b2 = 7 ft, H = 10 ft
2. 1. b1 = 5 yds, b2 = 8 yds, H = 4 yds
   2. c. b1 = 9 in, b2 = 11 in, H = 13 in
   3. d. Application: The two bases of a trapezoid = 16 km and its area = 32 km2. What is its height?

Hint: Use the formula. Substitute the given values and then solve as an equation.

Calculate the circumference of the circles with the following dimensions.
C = circumference
D = diameter
R = radius
PI = 3.14

1. a. D = 4 in

b. D = 6 in

c. D = 12 in
2. a. R = 2 ft

b. R = 14 ft

c. R = 12 ft
3. a. R = 9 ft

b. R = 11 ft

c. R = 7 ft
4. a. D = 10 ft

b. R = 9 ft

c. D = 13 ft
5. Application: Dana is planning to ride her bicycle around the circular race track and wants to know the distance. If the diameter of the track is 2 mile, how far is the distance around the race track?

Directions: Follow the instructions in Parts A, B, and C below to complete the assignment.

Part A

Directions: Answer each of the following questions.

1. How many electrons in a silicon atom have n = 3 as one of their quantum numbers?

2. How many electrons in a potassium atom have l = 0 as one of their quantum numbers?

3. How many electrons in a mercury atom have n = 4 as one of their quantum numbers?

Part B

Directions: Choose the correct electron configurations for the atoms and ions.

4. Bi

a) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3

b) 1s2 2s2 3s2 2p6 3s2 3p6

c) 1s2 2s2 sp6 3s2 3p6 4s2 3d7

d) 1s2 2s2 3s2 2p6 3s2 3p6

5. Co

a) 1s2 2s2 3s2 2p6 3s2 3p6

b) 1s2 2s2 2p6 3s2 3p6

c) 1s2 2s2 2p6 3s2 3p6 4s2 3d7

d) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3

6. P-3

a) 1s2 2s2 2p6 3s2 3p6

b) 1s2 2s2 3s2 2p6 3s2 3p6

c) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3

d) 1s2 2s2 sp6 3s2 3p6 4s2 3d7

7. K+1

a) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3

b) 1s2 2s2 2p6 3s2 3p6

c) 1s2 2s2 sp6 3s2 3p6 4s2 3d7

d) 1s2 2s2 3s2 2p6 3s2 3p6

8. Which member of each pair has the greater negative electron affinity?

a) Se or Br

b)Si or Al

c)Na or Cl

9. Which member of each pair has the larger radius?

a) Ca or Mg

b) Al or P

c) F-1 or F

10. Which member of each pair has the higher ionization energy?

a) He or Ne

b) Na or Mg

c) Ca or Ca +2

Part C

Directions: Write the complete ground-state electron configurations for the following:

11. lithium

12. oxygen

13. titanium

14. erbium

Problem 1 : (50 points)
Considering the following continuous real signal x(t), 8 samples from the signal x(t) are
collected to form the discrete signal x[n]. The sampling rate of x(t) is 2400 samples per
second.
1. Calculate the DFT X[m] of x[n] for 0 ≤ m < 4 where X[2] corresponds to the
spectrum of x(t) at the frequency 1.2KHz.
2. Calculate the DFT X[m] of x[n] for 0 ≤ m < 6 where X[2] corresponds to the
spectrum of x(t) at the frequency 0.8KHz.
3. Calculate the DFT X[m] of x[n] for 0 ≤ m < 8 where X[2] corresponds to the
spectrum of x(t) at the frequency 0.6KHz.
Recalculate the coecients x[n] in the three cases. Interpret your result.
If you want to save the DFT coecients, how many coecients would you choose. Which
ones ?

1. The perimeter of a rhombus is 40. What is the area of the square?

2. If one angle of a parallelogram is 60 degrees, find the number of degrees in the remaining three angles.

3. Are the diagonals of a parallelogram perpendicular? Why orwhy not? Explain.

4. Does an isosceles trapezoid have two sets of parallel sides? Why or why not? Explain.

5. Does a rhombus have two sets of congruent sides? Why or why not? Explain.

6. The perimeter of a square is 160 feet. What is the area of the square?

7. True or false;

a. A rhombus is a parallelogram with four congruent sides

b. A rectangle is a parallelogram with four right angles

c. A square is a rectangle and a rhombus

d. A rhombus is always a square

e. Every parallelogram is a regular quadrilateral

f. In a rectangle, the diagonals are perpendicular

8. Name the bases of the trapezoid shown below;

9.True or False;

a. A trapezoid has two bases

b. A trapezoid may have a right angle

c. A trapezoid may have three congruent sides

d. The bases of an isosceles trapezoid are congruent

e. The parallel sides of a trapezoid are called the legs

10. Find the values of the median of a trapezoid with the following base values;

What is the purpose of the Verilog task keyword?

Why did early Christians adopt some of the images and symbols of contemporary religions? How were the symbols used and how were they altered to fit Christian beliefs?

The quality of the digital signal depends on the sampling rate and the sampling detail.

• True
• False

I tried to solve this problem twice but i can't get the rightresults.

If a person of mass M simply moved forward with speed V, hiskinetic energy would be 1/2MV² . However, in addition topossessing a forward motion, various parts of his body (such as thearms and legs) undergo rotation. Therefore, his total kineticenergy is the sum of the energy from his forward motion plus therotational kinetic energy of his arms and legs. The purpose of thisproblem is to see how much this rotational motion contributes tothe person's kinetic energy. Biomedical measurements show that thearms and hands together typically make up 13.0% of a person's mass,while the legs and feet together account for 37.0% . For a rough(but reasonable) calculation, we can model the arms and legs asthin uniform bars pivoting about the shoulder and hip,respectively. In a brisk walk, the arms and legs each move throughan angle of about ±30^o (a total of 60^o ) fromthe vertical in approximately 1 second. We shall assume that theyare held straight, rather than being bent, which is not quite true.Let us consider a 75.0 person walking at 5.00km/h having arms70.0cm long and legs 90.0cm long.

A)What is the average angular velocity of his arms and legs?

B)Using the average angular velocity from part A, calculate theamount of rotational kinetic energy in this person's arms and legsas he walks.

C)What is the total kinetic energy due to both his forwardmotion and his rotation?

D)What percentage of his kinetic energy is due to the rotationof his legs and arms?

If you want to help, you don't need to solve the whole problem.Just explain how to solve. If you understand or know how to solvethis problem, please help.

in Iceland, demand and supply for television use (pay per view) by choice is described by the following demand and supply functions (v represents price per item)

Demand = 198 - 2v

Supply = -2 + 2v

The world market price for TV use is ISK 30. Price per item.

a) Calculate and draw a balance on a picture

i) if no foreign trade is allowed and foreign providers are excluded by excluding IP addresses.

(ii) if 14% VAT is levied on domestic broadcasters and foreign trade is prohibited. The tax is collected by consumers (no collection costs). What is the welfare loss from the tax? Show a picture.

iii) how is the tax burden divided into point ii) and what are its explanations?

b) Domestic tech nerds have avoided technical barriers to using foreign streaming services (VPN gymnastics) and the government does not have the ability to collect VAT on that use and subsequently decide to stop collecting VAT on domestic use: Calculate domestic production, domestic consumption and import. Draw a picture and calculate and benefit from the opening of a business (pretend that there was no VAT for freedom).

c) Due to the pressure of special interest groups of domestic producers, a decision is now made to impose a 30% duty on the world market price of imports (foreign streaming services), but the government has now found that traditional duty can be collected through credit card companies' transactions (no VAT).

i) What will be the price, imports, demand and domestic supply.

ii) How does producer and consumer profit change from point b)?

iii) What will be the macroeconomic loss due to duty compared to free trade without VAT?

What are potential and kinetic energy and how do they apply to this question: "A girl and an airplane are in constant motion heading towards the runway. However, the girl tilts forward when the airplane comes to an abrupt halt. Explain, in terms of motion why the girl tilted forward."