# Questions Asked onApril 18, 2015

1. ## ENGLISH

#speech. TopIc:afRican slaughter rituals should be allowed in the suburbs?

2. ## Enthalpy

Consider the following reaction: 2 Mg + O2 → 2 MgO ΔH rxn = -1203 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 4 moles of Mg. How do I set this up correctly?

3. ## Art

Image: Russian icon of saint George slaying the dragon by chrysanthos Its the first image. At the center of this textile us the large form of Sr. George, who is skating a dragon on a horse. Which of the following culturally important message does this

4. ## Physics

A piece of glass has a temperature of 83.0 °C. Liquid that has a temperature of 43.0 °C is poured over the glass, completely covering it, and the temperature at equilibrium is 59.0 °C. The mass of the glass and the liquid is the same. Ignoring the

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5. ## Math

In an arithmetic series, the sum of the 5th to the 8th terms inclusive is 114, whilst the sum of the 12th to 15th terms inclusive is 198. What is the 21st term? I have got 99=2a +3d and 57= 2a+3d Im not sure what to do now

6. ## statistics

If you flip a coin three times, the possible outcomes are HHH, HHT, HTH, HTT, THH, THT, TTH, TTT. What is the probability of getting at least two tails? A. 1/2 B. 2/3 C. 3/4 D. 4/9 mY ANSWER IS A

7. ## chemistry

25 ml of 3M hno3 are mixed with 75ml of 4.0M HNO3 if volumes are additive then find molarity

8. ## General Physics

A 5.00 kg howler monkey is swinging due east on a vine. It overtakes and grab onto a 6.00 kg monkey also moving east on a second vine. The first monkey is moving at 12.0 m/s at the instant I grabs the second, which is moving at 8.00 m/s. After they join on

9. ## Physics

Occasionally, huge icebergs are found floating on the ocean's currents. Suppose one such iceberg is 114 km long, 31.3 km wide, and 194 m thick. (a) How much heat in joules would be required to melt this iceberg (assumed to be at 0 °C) into liquid water at

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10. ## Physics

An arrow is shot horizontally with a speed of 20 m/s from the top of a tower 60 m high .The time to reach the ground will be???????

11. ## statistics

Joe dealt 20 cards from a standard 52-card deck, and the number of red cards exceeded the number of black cards by 8. He reshuffled the cards and dealt 30 cards. This time, the number of red cards exceeded the number of black cards by 10. Determine which

12. ## statistic

In a recent survey, 45% indicated chocolate was their favorite flavor of ice cream. Suppose we select a sample of fourteen people and ask them to name their favorite flavor of ice cream.

13. ## Chemistry

Which of the following processes are spontaneous? (Select all that apply.) a. average car prices increasing b. a soft-boiled egg becoming raw c. a satellite falling to Earth d. water decomposing to H2 and O2 at 298 K and 1 atm I thought it would c and

14. ## statistics

A consumer advocacy group claims that the mean amount of juice in a 16 ounce bottled drink is not 16 ounces, as stated by the bottler. Determine the conclusion of the hypothesis test assuming that the results of the sampling lead to rejection of the null

15. ## Chemistry

4. A typical car engine produces 44,000 kJ of heat in an hour. The cooling system has a capacity of 8.40 L and is filled with a 50:50 mixture of anti-freeze (specific heat capacity of 8.37 J/g-oC, density of 1.038 g/mL). In maintaining a constant engine

16. ## statistics

The data set represents the income levels of the members of a country club. Estimate the probability that a randomly selected member earns at least \$98,000. 112,000 126,000 90,000 133,000 94,000 112,000 98,000 82,000 147,000 182,000 86,000 105,000 140,000

17. ## Physics

How much heat is required to convert solid ice with a mass of 875 g and at a temperature of -11.5 °C to liquid water at a temperature of 52.0 °C? (The specific heat of ice is cice = 2100 J/kgK, the specific heat of water is cwater = 4186.8 J/kgK, and the

18. ## Maths

find the nth term and write an equation to express 4,36,100,196,324 so far I've got 32(n-1) + 4 but it only works for the first two . . .

19. ## maths

coin a is weighed so that the probability of throwing head is 2/3. coin b is weighed so that the probability of throwing a head is 1/4. coin a is thrown twice and coin b is thrown once. (I)show that the probability of obtaining exactly 1 head and 2 tails

20. ## World History

Explain the impact of the Japanese attack on Pearl Harbor.

21. ## Physics

A clown at a birthday party has brought along a helium cylinder, with which he intends to fill balloons. When full, each balloon contains 0.00410 m3 of helium at an absolute pressure of 1.30 x 105 Pa. The cylinder contains helium at an absolute pressure of

22. ## Math

A flower bed is in the shape of a triangle with one side twice the length of the shortest side, and the third side is 18 feet more than the length of the shortest side. Find the dimensions if the perimeter is 142 feet.

23. ## algebra

solve for x, y and z when 2x + 4y + 2z = 144 4x + y + 0.5z = 120 x + 3y + 4z = 144

24. ## trig

Karen earns 43 dollars per week working pt at a bookstore. she makes one dollar more for each book she sells. the amt A, in dollars that Karen earns in a week ifshe sells b books is given in the function A(b) =43 + b how much does she earnin a week if she

25. ## math

The Statue of Liberty is about 151 feet tall. If the angle of elevation from a tree in Liberty State Park to the statue's top is 1.5 degrees, how far is the tree from the statue?

26. ## math

The Statue of Liberty is about 151 feet tall. If the angle of elevation from a tree in Liberty State Park to the statue's top is 1.5 degrees, how far is the tree from the statue? cot 1.5 DEGREES= h/ 151 151 cot 1.5= h h= ________

27. ## error analyze

Can you check grammatical error, word use error and sentence structure error in this text? >>>This text is text, teacher to come to find the errors. I need you help just tell the error of each part. What's there? >>>Thank you

28. ## math help

A tank has two pipes entering it.when operating together,they fill the tank in 40 minutes.operating independently,one of the pipes fills the tank 60 minutes faster than the other one does. Calculate the time taken by each pipe to fill the tank on its own.

29. ## math (algebra)

An entrepreneur has the following costs and revenue functions: TC = 30 + 3Q and TR = 4Q. Calculate the equilibrium quantity algebraically and graphically at the break-even point.

30. ## human development

What are some of the ways that children learn about gender stereotypes?

31. ## statistics

A researcher wishes to estimate the mean amount of money spent per month on food by households in a certain neighborhood. She desires a margin of error of \$30. Past studies suggest that a population standard deviation of \$248 is reasonable. Estimate the

32. ## Physics I

A container of volume 0.71 m3 contains 1 mol of argon gas at 27◦C. Assuming argon behaves as an ideal gas, find the total internal energy of this gas. The value of gas constant is 8.31451 J/mol · K

33. ## math

A salesperson earned 33,250 on annual sales of 950,000. What is her rate of commission.

34. ## Molarity question

okay so in lab we made up 2 solutions of FeCl3 and KI. We varied the volumes...I was just wondering how to calculate a new concentration for those solutions. We weighed out .825g of the FeCl3 and 1.35 g of the KI. For trial one we used 20 mL of both. For

36. ## physics

Two speakers, one at the origin and the other facing it at x = 1.04 m, are driven by the same oscillator at a frequency of 642 Hz. If the speed of sound is 343 m/s, find the following. I know the wavelength is .53 m how do I do b? (b) the location of a

37. ## science

if 1g of carbon dioxide is bubbled into 100g of a calcium hydroxide solution in a flask. what is the total mass of substance in the flask after the reaction is complete?

38. ## Math

An artist drew a painting with similar rectangles with whole-number dimensions in inches. The small rectangle is 8 inches by 3 inches. One dimension of the medium rectangle is 9 inches. One dimension of the large rectangle is 32 inches. a. find the

39. ## Math

Whoever can help with a question I posted earlier. I am very sorry; I put the wrong variable in the question. Question is to solve for y and not "x" as my previous message and the equation is: x = 3(r + ty) So sorry for the confusion. Please help at your

40. ## Physics

A stone is dropped from the peak of a hill. It covers a distance of 45 meters in ther last two seconds of its motion. Find the height of the peak?

41. ## Science

Assuming all volume measurements are made at the same temperature and pressure, what volume of hydrogen gas is needed to react completely with 3.75 L of oxygen gas to produce water vapor?

42. ## physics

Tony£¬a 110kg football player£¬has a fever of 39celcius. What mass of water must evaporate from his body to cool him to 37celcius£¿

43. ## physics

Which quarks will I find in a neutron? (only one answer is correct) A: Three up quarks. B: Two up quarks and a down quark. C: Two down quarks and an up quark. D: One charm quark, one up quark and one down quark.

44. ## science-chemistry

if 1g of carbon dioxide is bubbled into 100g of a calcium hydroxide solution in a flask. what is the total mass of substance in the flask after the reaction is complete?

45. ## World History

31. Explain the impact of the Balfour Declaration on the Middle East. (4 points)

46. ## Physics/Chemistry HELP!! URGENT!!

Arsenic in geomedia contaminates an aquifer by naturally occurring geological processes. The aquifer has a bulk density of 1.55 g/cm3 and a particle density of 2.63 g/cm3. The distribution coefficient, Kd value is 0.0370 L/kg. The initial concentration at

47. ## Physics

Heat is added to 0.77 kg of ice at -25 °C. How many kilocalories are required to change the ice to steam at 131 °C? I don't even know where to begin with this

48. ## human development

What changes take place in early adolescence to gender identity?

49. ## english

I need help.I have to write a prepared speech on the topic-traditional african marriages is an advantage to men only not women

50. ## physics

A technician makes a 5.0 kg metal object containing two parts£¬one of iron and the other of aluminum.If it takes 504kj to change the objects temperature from 25 celcius to 165celcius£¬what is the mass of each part£¿

51. ## physics

Before leaving for a vacation£¬the owners of a home 8.0m *21m*5.0m turn the thermostat down to 14celcius. On their return£¬how much heat is needed to raise the temperature of the air inside the home to 21celcius£¿Ignore the heat needed to warm the

52. ## physics

A cook placed five eggs£¬each having a heat capacity of 114J/celcius£¬in a 250g aluminum pot containing 0.5L of water at a temperature of 20celcius. If the heating element is raised at 750W£¬and one fifth of the heat escapes to the

53. ## Science

53.9 mL of 0.991 M nitric acid is added to 45.3 mL of sodium hydroxide, and the resulting solution is found to be acidic. 20.5 mL of 1.51 M potassium hydroxide is required to reach neutrality. What is the molarity of the original sodium hydroxide solution?

54. ## physics

An aluminum calorimeter of mass 400g contains 200g of water at a temperature of 18celcius.When a block of nickel at a temperature of 80celcius is dropped into the water£¬the final temperature of the mixture becomes 28celcius. Find the mass of the nickel.

55. ## Architect

What kind of training do you need to become a landscape architect?

56. ## AP Physics

The white ball in the figure has a speed of 1.67 m/s and the yellow ball is at rest prior to an elastic glancing collision. After the collision the white ball has a speed of 1.43 m/s. To the nearest tenth of a degree, measured counterclockwise from east,

57. ## human development

Describe how the body grows over childhood and adolescence.

58. ## tech

what is colour field

59. ## math

what is the global maximum of the parabola y= -x^2 -12x +4

60. ## precalc

Find the focus and directrix of y=4x^2

61. ## Calculus

Write the Riemann sum to find the area under the graph of the function f(x) = x4 from x = 5 to x = 7.

62. ## Physics

At what time after being ejected in the boulder moving at 20m/s upward if a large boulder is ejected from volcano with initial

63. ## AP Physics

The white ball in the figure has a speed of 1.67 m/s and the yellow ball is at rest prior to an elastic glancing collision. After the collision the white ball has a speed of 1.43 m/s. To the nearest tenth of a degree, measured counterclockwise from east,

64. ## Chem

Potable water (drinking water) should not have manganese concentrations in excess of 0.05 mg/mL. If the manganese concentration is greater than 0.1 mg/mL, it imparts a foul taste to the water and discolors laundry and porcelain surfaces. In an acidic

65. ## algebra

Describe how you know if an inequality is an “and” or an “or” problem. (use -3 < x+5 < 8). Also, how do you know if an absolute value question is an “and” or an “or” problem?

66. ## Heat

Consider the following equation: CO + 2 H2 → CH3OH ΔH rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2. How would u set that up?

67. ## Math

School A has 480 students and 16 classrooms, School B has 192 students and 12 classrooms. How many students would have to transfer from School A to School B for the ratios of students to classrooms at both schools to be the same? Explain your answer.

68. ## math

Sarah was trying to figure out her grades for her math course. She only knew the grade of 4 tests she had taken, however the class had taken 5 tests total. She scored a 94, 67, 83 and 93. If Sarah ended up with a grade of 90, what did she get on the 5th

69. ## ALGEBRA II

Write each series in summation notation: *this is the only one that i cant solve -2+4+(-6)+8+(-10)+12 Please help! :(

can someone help me in sign language if they can't please write back a reponse

71. ## statistics

A two-tailed test is conducted at the 0.10 significance level. What is the P-value required to reject the null hypothesis? A. Greater than or equal to .010 B. Greater than or equal to 0.05 C. Less than or equal to 0.10 D. Less than or equal to 0.05 Is it

72. ## calc

If a cost of a function is C(x) = (49 ln x) / (28-3x), find the marginal cost when x = 7

73. ## geometry

I had to complete the following solution by filling in the missing statements and reasons. I filled out the statements, but am having trouble wording the last two reasons. Following solution: x-2(3x-4)=18 Statement: x-2(3x-4)=18 Reason: Given Statement:

74. ## Art

Which technique do Native Americans use to form patterned blanket? A. Embroidery B. Weaving C. Stitchery D. Applique Is the answer B? Thank you

75. ## Algebra

Use the properties of exponents to simplify as much as possible (8a^3b^6)^(1/3)/(16a^8b^-4)^(1/4)

76. ## Vectors

At what point does the line r=(-2,3,1)+s(2,3,-1) intersect the y-axis?

77. ## Sequences

find the nth term and write an equation to express 4,36,100,196,324 so far I've got 32(n-1) + 4 but it only works for the first two . . .

78. ## error analyze

Can you check grammar error in this text? What can you do to reduce global warming in Thailand? Nowadays, The problem global warming is main problem for everybody in the world. It is effect on change of weather that the world have temperature highest. In

79. ## s.s

My friends asking. who was JFK killed by and was Lincoln a republican or democratic

80. ## Art

Prior to the arrival of the Spanish, Native Americans would likely have chosen which material with which to weave their blankets? A. Oat wool. B. Silk. C. Sheep wool. D. Cotton. D? Thank you

81. ## math

Aiden completed 18 out of the 25 questions on his history test. What percent of the questions did he complete

82. ## Further maths

Two functions f and g are defined over the set of R of real numbers as follows: f:x=2x-3 g:x=xsquare+5 find f[g(x-1)]

83. ## math

The 5th term of an Arithmetic Progression is 8 and the 12th term is 50. Determine the sequence

84. ## physics

why is the momentum constant if the mango drops from the tree without rebound

85. ## maths

The no.wich Is 4 more than the square of 625 .....is exactly 2 prime factors.find them..... I am trying lyk this But answer is not coming X^2= 4+625^2

86. ## mathematics teaching

How you will use the measuring jug(500ml) to explain the difference between capacity and volume to learners.

87. ## math

find roots of this equation y^3-1.5y^2+0.3275

88. ## Math

a surveyor is 3 miles from a mountain. The angle of elevation from the ground to the top of the mountain is 15 degrees. What is the height of the mountain?

89. ## math

the angle of elevation from a ship to a 135-foot-tall lighthouse is 2 degrees. How far is the ship from the lighthouse?

90. ## math

it costs \$80 to produce any quantity of output and \$1.60 for any additional unit of output. write down the equation and graph the total cost function

91. ## Math

Can you help with this equation? Have to solve for the indicated variable: For x: With equation y = x + 1/x - 1; in case it doesn't make sense; the x + 1 is in the numerator and the x - 1 is in the denominator. Thank you for your help. Cassandra

92. ## Math

Can you help please on the following question: "The sum of the lengths of the legs of a right triangle is 8 feet. If the length of the hypotenuse is 6 feet, find the length of the shorter leg to the nearest tenth of a foot." Thank you, Cassandra

93. ## social studies

what are resoures ?

94. ## poetry

what is a 14 line poem

95. ## maths

Write 5x-3 in positive index

96. ## Physics

Two tiny similar balls, each of mass m kg & carrying charge q coulomb are hung from the same point by light silk threads each l meter long. At equilibrium the angle between the threads is very small and the separation of the balls is r meter. Show that R =

97. ## math

The data set represents the income levels of the members of a country club. Estimate the probability that a randomly selected member earns at least \$98,000. 112,000 126,000 90,000 133,000 94,000 112,000 98,000 82,000 147,000 182,000 86,000 105,000 140,000