# Questions Asked onJanuary 1, 2017

1. ## ChemistryStociometry

6.0g of cobolt (II) carbonate was added to 40cm3 of hydrochloric acid, concentration 2.0 mol/dm3. Calculate the maximum yield of cobalt (II) choloride-6-water and show that cobalt (II) carbonate was in excess. CoCO3 +2HCl = CoCl2 +CO2 + H2O CoCl2 + 6H2O =

2. ## Math

A person borrow \$8000 at 2.76% simple interest per annum.The principal and interest are to be paid in 10 monthly installments.If each installmeny is double the preceding one, the value of first and last installments are??A person borrow \$8000 at 2.76%

3. ## mathematics

A hemispherical bowl has an external radius of 18cm and is made of wood 3m thick. calculate the volume of the wood in the bowl.

4. ## math

A manufacturer of hospital supplies has a uniform annual demand for 320,000 boxes of bandages. It costs ​\$10 to store one box of bandages for one year and \$ 160 to set up the plant for production. How many times a year should the company produce boxes of

5. ## Math

A number of two digits is such that twice the ten digits is 8 less than seven times the unit digit. When the digits are reversed, the number is decreased by 9. What is the number?

6. ## math

Andy is scuba diving.He starts at sea level and then descends 10 feet in 2 1/2 minutes. A. how would you represent Andy's descend as a unit rate? Express your answer as an integer. B. How much feet can he descend in 6 minutes?

7. ## Geometry

Problem: ABCD is a kite such that AB=BC and CD=DA. P is the centroid of triangle ABC and Q is the centroid of triangle CDA. We know [ABCD]=60. Find [PCQA]. I have no idea on how to approach this problem!

8. ## Social studies

Which of the following limited opportunities for freedom in the south after the civil war ended? A- radical reconstruction B-lincolns ten percent plan C- Jim Crow laws D- the fourteenth amendment My answer- D

9. ## Math

If one third of a number is 10 less than the original number,what is the number?

10. ## mixed numerals

Yesterday, Joe's Snack Shack went through 8 bottles of ketchup. If they used 1/5 as much mustard as ketchup, how many bottles of mustard did they go through?

11. ## math

You are analyzing your advertising expenses. You have a print ad in the Apartment Guide rental magazine that costs \$900 per month. You also have an ad on the apartments/com website that costs \$224 per month. You have tracked your call, show and lease

12. ## science

Why the solution of aluminium sulphate in water is not clear

13. ## Math

Find the area of a rectangle whose length is 11.5 and breadth is 12.5 m

14. ## math

Graph the direct variation y=−1.5x. Using the graph, find: The value of x when y=−3; 4.5; 6

15. ## Geometry

The angle of inclination of a line passing through (4,5) and (a,-5) is 45°. Find the value of a.

16. ## mathematics

The sum of first and the second terms of an ap is 4 and the 10th is 19.find the sum of the 5th and 6th terms.

17. ## american goverment

3. Speech is powerful. It can stir people to action, move them to tears of both joy and sorrow, and... inflict great pain. On the facts before us, we cannot react to that pain by punishing the speaker. As a nation, we have chosen a different course—to

18. ## Maths

the value of a machine depreciates every year by 5% .if the present value of the machine is 100000 ,find the value after 2 years

19. ## american goverment

The fabric of American empire ought to rest on the solid basis of the consent of the people. The streams of national power ought to flow from that pure, original fountain of all legitimate authority. –Alexander Hamilton, The Federalist No. 22 Use the

20. ## science

Why the solution of aluminium sulphate in water is not clear

21. ## Maths

the value of a machine depreciates every year by 5% .if the present value of the machine is 100000 ,find the value after 2 years

22. ## Math

the value of a machine depreciates every year by 5% .if the present value of the machine is 100000,what is the value after 2 years

23. ## Analytic Geometry

The angle of inclination of a line is passing through (4,5) and (a,-5)) is 45°. Find the value of a.

24. ## American government

Aluminium sulphate when dissolved in water forms aluminium hydroxide and sulphuric acid.Since, aluminium hydroxide is insoluble in water, a clear solution is not obtained. Al2(SO4)3 + 6H2O →2Al(OH)3 + 3H2SO4Aluminium Aluminiumsulphate Hydroxide

26. ## Chemistry

Is this a valid equation? NaNO3 + H2O = NaOH + HNO3 Why or why not?

27. ## science

An astronauts boots weigh 100N on earth where the acceleration of free fall is 10m/s2. How much will they weigh on Mars where the acceleration of free fall is 4m/s2?

28. ## science

Describe how you would investigate effect of ph on enzymes rate. Draw a labelled diagram to show how you carried out the experiment

29. ## science

If a scientist wished to to determine the effect of a certain herbicide on wee growth he would include a control in the investigation. Suggest a suitable control in this case.

30. ## science

Explain the purpose of a control in a scientific experiment

31. ## physics

a woman is draining her fish tank by siphoning the water into an outdoor drain the rectangular tank has footprint area A and depth H . the drain is located a distance D below the surface of the water in the tank , where D>>H . the cross section area of the

32. ## math

A long-term resident moves out of apartment #35 on the last day of May because they are unhappy with their neighbor, and later a new resident takes possession on June 16. You begin to wonder what the total economic cost of the vacancy was. The rent on the

33. ## science

Write a java program using classes and object to read the em[loyee code (Integer), Imployee name (string), Basic salary )double), Category (Character)then calculate the bonus(double)and the total salary(double)eligible for each employ. The output should

34. ## math

Draw a parallelogram of diagonals 5cm and 7 cm and one angle as 60 degrees

35. ## computer,science, java

Inorder to motivate the employees, the company has decided to announce the different types of bonus depends up on the employee’s Grade. If the employee belong to Grade A bonus=20% basic Grade B bonus=15% basic Grade C bonus=10% basic Grade D bonus=7%

36. ## computer, science, java, software

Write a Java program to declare and store numbers from 1 to 10 in a single dimensional array and display the output in the following format. 1 2 3 4 5 6 7 8 9 10

37. ## chemistry

Name two metals which are obtained by reducing thier oxides by heating with aluminium How is the metal oxides present in calcined/roasted ore reduced to the metal

38. ## chemistry

Name two metals which are obtained by reducing thier oxides by heating with aluminium How is the metal oxides present in calcined/roasted ore reduced to the metal

39. ## Math

Using the method completing the square. Find the roots of this equation 4d^2= (d+4)(-d+12)

40. ## math

To what value does the sum 20+12+36/5---tend as n.

41. ## Letter

Please help me draft a email : "I have received an E-mail from RAM (Client) stating that few of your team members are being very rude on E-mail and on calls . They do not understand the issue and do not listen to the concerns. Sam is completely annoyed

42. ## Analytic Geometry

Let K,L,M, and N be points of a line with KL=4,MN=6,KN=20. Find the value of the ff. -2(KL-4ML-2LN) ____________ 2/3(MN+3ML)

43. ## Analytic Geometry

A circle with center C(4,6) has a diameter that terminates at A(-1,y) and B(x,8). Find the values of x and y.

44. ## calculus

(2y-1)dy/dx=(3x^2+1) given that x=1 when y=2 plz show step thanks

(2y-1)dy/dx=(3x^2+1) given that x=1 when y=2 plz show step thanks 2) (a)find the general solution of the equation (x-2)dy/dx+3y(x-1)/(x+1)=1 b)given the boundary condition y=5 when x=-1,find the particular solution of the condition given in (a) a little

46. ## Email writing 1

Please draft a email for me : There is a quality report your Supervisor is asked you to complete however you have not been able to res​pond to the email or even state the reason for the delay .

47. ## Email writing 2

Need help to draft the email. "You are the AT&T escalation team associate, Your customer Mike sent an email to you" Team, I have received a pathetic service from AT&T , you guys have been completely ridiculous in resolving my issue . I am completely

48. ## Math

Compare the integers with or = +6 &-11

49. ## physical science

What is the speed of a bobsled whose distance-time graph indicates that it traveled 107m in 26s?

50. ## math

Solve the equation and graphing utility to verify your solution

asked by solving equation by graphing
51. ## math

rent is 650, new resident will move in June 16, however, in order to convince him to move in you had to give him 1/2-month rent free assumed a 30 day month. I divide 650/30 and i get =21.666666667 x 16= 346.66666667, but I's not coming out right. Can you

52. ## physical science

A pendulum has 501 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom of its swing? joules

53. ## percentages

You have shown vacant apartments to 16 potential renters this week and you have taken 4 applications for these vacancies from those you have toured the property. What is your leasing closing ratio in percentage? I came up with 4/16= 25%. Is this right?

54. ## math

On Friday, Steven sold 4 pitchers of lemonade from his lemonade stand. On Saturday, he sold 1/3 as much lemonade as on Friday. How many pitchers of lemonade did Steven sell on Saturday?

55. ## physical science

How much heat is absorbed by a 70g iron skillet when its temperature rises from 24oC to 110oC? joules

56. ## Math

Use the table below to evaluate the d/dx[g(f(3x))] at x = 1. x 1 2 3 4 f(x) 6 1 2 2 f ′(x) 6 1 10 2 g(x) 1 4 4 3 g ′(x) 4 5 7 –4 My work: D/Dx(g(f(3x)))= g'(f(3x)) * f'(3x) * 2 D/dx (g(f(3*1)))) g'(f(3*1))*f'(3*1) *2 4*3*2=24 I know 24 isn't the

57. ## Math

The recipocal of 4 less than a number is three times the reciprocal of the same number.What is the number?

58. ## chemistry

Hello, Is nano3 + h2o -> naoh + hno3 correct?