# Questions Asked onFebruary 17, 2015

1. ## chemistry

4g of a mixture of CaCO3 and sand is treated with an excess of HCl and 0.88g of CO2 is produced. What is the percentage of CaCO3 in the mixture

2. ## Physics

A contestant in a winter games event pushes a 59.0 kg block of ice across a frozen lake as shown in the figure below. The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. The block is being pushed at a direction of 23

3. ## Language Arts

Both "Grandma Ling" and "your little voice . . ." use imagery to convey the emotions or attitudes of the speakers. Choose one of these poems. In a paragraph, discuss how the poet uses imagery to present the speaker's feelings. Support your response with

4. ## physics

A 7.00-kg bowling ball moves at 2.15 m/s. How fast must a 2.40-g Ping-Pong ball move so that the two balls have the same kinetic energy?

5. ## physics

21. A traffic signal of mass 25.0 kg is suspended by two cables as shown in the diagram below. Solve for the tension in each cable each of the following scenarios: (a) θ1 = θ2 = 20.0°, and (b) θ1 = 20.0°, θ2 = 30.0°.

6. ## tec

What is an AUP? the abbreviation for the school administrator in an online education environment a document outlining what is acceptable behavior when using the Internet for schoolwork a policy outlining the proper formatting to use in Microsoft® Office

7. ## agreement error

Patient was brought to the operating room, induced in general endotracheal anesthesia, and we then placed him in the supine position on the operating room table.

8. ## algebra

The product of the first ten prime numbers must be divisible by: F. 16 G. 18 H. 20 J. 22 K. 24 Please provide detailed explanation with answer (if possible) Thanks in advance.

9. ## Calculus

A craftsman wants to make a cylindrical jewelry box that has volume, V, equal to 60 cubic inches. He will make the base and side of the box out of a metal that costs 50 cents per square inch. The lid of the box will be made from a metal with a more ornate

10. ## wcc

Andres Michael bought a new boat. He took out a loan for \$23,880 at 4.25% interest for 2 years. He made a \$4,000 partial payment at 2 months and another partial payment of \$3,000 at 8 months. How much is due at maturity? (Do not round intermediate

11. ## math

A square brass plate is 2 mm thick and has a mass of 1.05 kg. The density of the brass is 8.4 g/cm3. Calculate the length of the plate in centimeters

12. ## analytic geometry

The main cables of a suspension bridge uniformly distribute the weight of the bridge when in the form of a parabola. The main cables of a particular bridge are attached to towers that are 600 ft apart. The cables are attached to towers at a height of 110

13. ## science/ velocity

a body moves along a straight line,its distance from the origin at any instant being given by the equation x= 8t -3t squared, where x is in centimeter and t is in seconds. find the average velocity of the body in the interval from t=0 to t=1 sec,and in the

14. ## maths

a boy spend 2/7 of his pocket money on transport and 1/5 on sweet. what fraction of his pocket money does he spend on transport and sweet?

15. ## life orientation

To what extent can intrapersonal conflict affect communication in relationship choice of career job performance when employed

16. ## calculus

An artificially created lake is bordered on one side by a straight dam. The shape of the lake surface is that of a region in the xy-plane bounded by the graphs of 2y=16-x^2 and x+2y=4. Find the area of the surface of the lake.

17. ## maths

Two circles with centers a and b of radii 3 cm and 4 cm res , intersecting at two points c and d such that ac and bc are two tangets of the circles, then length of common chord .

18. ## physics

A person walks 4.0 miles east and then makes a 50° turn to the right and walks another 2.0 miles. How far is she from her starting point?

19. ## physics

A fire helicopter carries a 664 kg bucket of water at the end of a 24.9 m long cable. Flying back from a fire at a constant speed of 44.2 m/s, the cable makes an angle of 41.6o with respect to the vertical. Determine the force of air resistance on the

20. ## Anthropology

Ms. Sue, Can you please give me your opinion. I would really I will appreciate it very much. Its on the gender and gender sexuality. Let me know if I need to do added anything else. The identities, inequality and equality.The Cangoan gender and sex

21. ## Physics 202

A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 10.0g and electrical resistance 0.100Ω

22. ## Anthropology

I need some serious Assisting. PLEASE!!!!I am doing a project on gender and gender roles including identities and the equality and inequality. The Culture is Native American. I need help a.s.a.p. This is my last week in this class. Please, please help me.

23. ## Science

Which statement is true of an organ system? A. It supports all part of the organism. B. it is not necessary for the survival of the organism. C. One organ system can take over for another organ system. D. It has no connection with other organ system in the

I know what an epic simile is but I'm trouble finding two epic similes in these line I've given below. And I also need to know why I think the author used these two epic similes Please help! Here's the lines I have to find the two from : The Odyssey : Book

25. ## art

an artist loved to work with smooth, flowing paint that has vibrant color. Know she has many months to finish a commission. Her best choice for a material would be: 1. tempera paint 2. oil paint 3. acrylic paint 4. watercolor'

26. ## algebra

if a school has 24 teachers and 480 students, what is the ratio of teachers to students?

27. ## algebra

An artist framed a rectangular picture. The dimensions of the frame are 4x+3 and 3x+5. He is going to place the picture with the border of 2 inches. Then he wants to paint the border. What is the area he has to paint?

28. ## algebra

if 240 widgets cost \$36, what is the cost of 180 widgets?

29. ## physics

A string under a tension of 59.0 N is used to whirl a rock in a horizontal circle of radius 2.55 m at a speed of 20.0 m/s on a frictionless surface as shown in the figure below. As the string is pulled in, the speed of the rock increases. When the string

30. ## concept development

Which of the following process skills is generally more important for use with older children? A. Observing B. Communicating C. Classifying D. Predicting my answer I think is c.

31. ## concept development

A basic rule in evaluating learning activities is to be sure A. the child has no prior knowledge. B. a variety of science process skills are used. C. the strategies are limited. D. the textbook provides step-by-step photos. my answer is b.

32. ## cconcept development

When a teacher chooses learning objectives for a child, which question should be asked? A. What should Kelly learn next? B. Where's Kelly in the learning process? C. Do the plan and materials fit my lesson? D. Has Kelly learned what was taught? a.

33. ## GEOMETRY

What is the value of p? A right triangle with angles measuring 45, 45 and 90 and a leg measuring P and hypotenuse measuring 44 22 22 sqrt 2 44 44 sqrt 3 It always helps to know how...thanks

34. ## College Algebra

Flight of a Ball If a ball is thrown upward at 96 feet per second from the top of a building that is 100 feet high, the height of the ball can be modeled by S(t)=100 + 96t -16t^2 feet, where t is the number of seconds after the ball is thrown. How long

35. ## Science

A particular ecosystem in Georgia can support a maximum population of 100 bluebirds which of the following would allow hundred 20 bluebirds to live together in this ecosystem? (a. Human activity disrupting the nesting out of a predator hawk) (B. Flooding

36. ## Science

Getting Oxygen 1) Name the components of the respiratory system in the order incoming air would encounter them during breathing. :Trachea,pharynx,larynx,alveoli,bronchi. :Bronchi,larynx,alveoli,trachea,pharynx. :Larynx,trachea,bronchi,pharynx,alveoli.

37. ## physics

An object 5 cm high is placed at a distance of 60 cm in front of a concane mirror of focal length10cm .Find the position and size of image

38. ## Social Studies

1 which statement best describes why constitutions are needed? A Constitutions are needed so that governments don't get carried away with taxes B Constitutions are needed because all of the laws have to be written down somewhere. C Constitutions are needed

39. ## math

The size of an interior angle of a regular polygon is 3x° while its exterior angle is (x- 20)°. Find the number of sides of the polygon

40. ## Organic Chemistry

A 1.0 gram sample of aspirin will dissolve in 300 mL of water and in 17 mL of chloroform at 25 deg C. a. What is the solubility of aspirin in each solvent expressed in g/mL? (show your calculations) I don't know where to start, does the molecular weight

41. ## economics

Can someone help me out with this multiple choice question in AP Macro? "Congress votes to substantially increase the minimum wage. The determinant causing the shift in this scenario is: A. price B. productivity C. resource cost D. political or

42. ## math

A particle moves along straight line such that its displacement S meters from a given point is S = t^3 – 5t^2 + 4 whee t is time in seconds. Find (a) The displacement of particle at t = 5 (b) The velocity of the particle when t = 5 (c) The values of t

43. ## Science

I need an acrostic poem for Balanced Forces and Unbalanced Forces!

44. ## Health

________ causes contraction of the smooth muscle in the wall of the uterus. It also stimulates the ejection of milk from the lactating breast.

45. ## science

what is an example of fundamental quantity between viscosity,tension,force,weight or non of the above

46. ## statistics

S) Suppose we want to determine the (binomial) probability (p) of getting 5 heads in 15 flips of a 2-sided coin. Using the Binomial table in the appendix of the text, what values of n, x, and p would we use to look up this probability, and what would be

47. ## chemistry

Why material properties vary in spite of the similarity in crystalline form?

48. ## math

If a person has 56 pencils n 37 more and pens how many pens do she has

49. ## maths

how many terms are there in an arithmetric sequence if it has a common difference of 3 , a last term of 30 and the sum of its terms is 135

50. ## English

I'm sorry to ask this again but I still don't know what to put as examples of hope and hopelessness from Act One in A Raisin in The Sun

51. ## physics SOS

a 62.8 kg astronaut is floating toawrd the front of her ship at .16 m/s relative to the ship. she wishes to throw away the 2.9 kg book she was carrying. what should the speed of the book be to achive her goal?

52. ## Calculus

If f(x) = x4 + 6x,find f'(x).

53. ## SS

What are the similarities between Africa north of the equator and south of the equator?

54. ## physics

Toby is jogging at a constant speed of 3 m/s along a winding path. He is accelerating even though he is going at a constant speed. how is this possible? please help..

55. ## Physics

how does the value of V relate to V1 and V2?

56. ## statistics

In testing the hypotheses H0: = 0.40, H1: > 0.40 at the 5% significance level, if the sample proportion is .45, and the standard error of the sample proportion is .05, the appropriate conclusion would be

57. ## Math

You have a pizza that's 6 cool slices if you eat 4 .what it what is the angle measure of doing fortune of pizza in degrees

58. ## Chem

What pairs of ions produce similar colours in the flame test? Use your periodic table of elements to explain the reason for this. I think it's the different groups of elements, but I'm not sure.

(4p-1)^2

60. ## science

the change in velocity takes place in 10 sec interval. What is the magnitude, the algebraic sign and the direction of the average acceleration in each interval? At the beginning of the interval a body is moving to the right along the x-axis at 5 ft/sec,

61. ## History

How was the West drawn closer to the North and the South further isolated? Why did an increase in productivity lead to an improvement in transportation technology ?

62. ## life orientation

by means of a practical example. describe the conflict that exist between the should and want as a source conflict

63. ## Equivalent fractions

Equivalent fraction for 5/6

64. ## math

every container of fruit salad contains 1/3 of an apple. how many whole apples are there in 6 containers or fruit salad what should i do

65. ## physics

38. A rock of mass 0.400 kg is released from the surface and sinks in the ocean. As the rock descends it is acted upon by three forces: gravity, buoyancy, and drag. The buoyancy is an upward force equal to half its weight. Drag from the water can be

66. ## Calculus

Calculate the area of the bounded region between the curves y^2=x and 3y = -3y + 9 ?

67. ## physics

43. A block of mass 2.00 kg rests on a ramp tilted at 25.0°. Coefficients of friction for the block/ramp: μs = 0.300, μk = 0.100. A string passing over a high quality pulley connects the block with a bucket as shown below. The bucket contains sand but a

Over the past ten years more than two dozen athletes have died from the medical condition known as heatstroke. Heatstroke occurs when the body’s internal temperature becomes so elevated that its cooling system begins shutting down. Who is most at risk?

69. ## physics

Two blocks are connected by a lightweight cord that passes over a frictionless, massless pulley. The bottom block has a mass of 2.00 kg and the top block has mass 0.500 kg. The coefficient of kinetic friction at each sliding surface is equal to 0.10. The

70. ## calculus A

A particle moves according to a law of motion s = f(t) = t3 - 12t2 + 21t, t 0, where t is measured in seconds and s in feet. v(t) = 3t^2 - 24t 21 a(t) = 6t - 24 e) Find the total distance traveled during the first 8 s. i) When is the particle speeding up?

71. ## Biology

What happens as a result of insertion (the mutation)?

72. ## Math

if 12 ft of ribbon is cut into pieces that are 2 1/4 ft long,how much ribbon is left over?

73. ## math

It costs \$12.50 to see a movie at a theater near Jason's house. It costs only 1.95 to rent a DVD from an online service. A DVD player costs \$125. To the nearest whole number, how many movies must Jason watch on DVD instead of at the theater before he

74. ## Science

Q1. Why is the shape of the nerves important in the nervous system? Q2. Which structure is more complex, a tissue or an organ? How do you know?

77. ## religion

For silent reading during solat there is an opinion that the reading must be heard by his ear.Is it true?If it is not true what are the arguments against it?(Normally the person beside him will hear his vocalization and will disturb his solat)

78. ## maths

Please help solve for x A.7^x+(4)(7^x) =245 B.x-|x+20=0 C.1+3/(x+1)=x Simplify D.(|24 +2|6 + |54 / |96 - |6 Keys: |=square root, /over or divided by

79. ## algebra

One number is twice a second number. The sum of those numbers is 45. Find the numbers.

80. ## algebra/trig

You need a 100 pounds of two types of candy that cost 50 cents per pound and 75 cents per pound. A.) Verify that your total cost is c(x)=0.50x + 0.75(100-x) thx a ton:)

81. ## AP Chemistry

A student titrates 25.0 mL of a 0.100 M solution of acetic acid with a 0.100 solution of sodium hydroxide. Calculate the pH at the equivalence point.

82. ## science

A solution is prepared by mixing 90 ml of 5 M HCl and 30 ml of 8 M HNO3. Water is then added until the final volume is 1 L. Calculate the [H+], [OH-], and the pH for this solution.

83. ## philosophy

Between the Buddha, John Locke, David Hume, and Derek Parfit, which philosopher has the most convincing account of personal identity?

84. ## math - ans.check

Given function G(x)=-7/8(45-x), find x to nearest tenth, when G(x)=15 ____________________________________ I'm stuck on this question,i tries on my own but i couldn't get it right, plz help! 15=-7/8(45-x) -8/7(15)=45-x (-17.1428..)=45-x -> stuck at this

85. ## Chemistry

How do I get the answer to ?mass, 200 cm3volume, 6.843 g/ml=

86. ## Chemistry

If all the H2O2 in 25mL of a 3% solution of H2O2 decomposed, calculate the diameter of a sphere that would contain the resulting O2 at 1 atm and 296K. I understand how to do the problem if I have moles but I am not sure how to get moles. I thought

87. ## calculus 3

A golf ball is driven down a horizontal fairway with an initial speed of 55m/s at an initial angle of 25 degrees. (Assume the tee from which the ball is hit is of negligible height). a). how far does the ball travel horizontally b). when does the ball

88. ## Statistics

A population has u=100 and o=20. If you select a single score from this population, on average, how close would it be to the population mean? Explain your answer. I don't understand the question itself. Please help.

89. ## Physics

Sound of a certain wavelength is coming from within a room and passing through a rectangular door (a "slit"). If the width of the doorway is twice the wavelength of the sound, what is the diffraction angle è of the sound leaving the doorway? Please show

90. ## physical

I'm working on projectile motion and I am supposed to find the speed for this problem, however I'm having trouble setting up the problem. I'm not finding any help from the book either. A golfer hits a shot to a green that is elevated 2.50 m above the point

91. ## English

Which sentence is capitalized correctly? A.) James Monroe was the fifth president of the United States. B.) James Monroe was the Fifth President of the United States. C.) James Monroe was the Fifth president of the United States. D.) James Monroe was The

92. ## Physics

I'm having trouble finding the speed to the problem. My book isn't helping much either. A golfer hits a shot to a green that is elevated 2.50 m above the point where the ball is struck. The ball leaves the club at a speed of 18.7 m/s at an angle of 51.0˚

93. ## Physics

suppose you had a circuit with three resistors in series and you measured I=7.0 milliamps; V = 14.7 volts; V1= 3.5 volts and V2 = 1.4 volts. What would be the voltage across the third resistor? What would its resistance be?

94. ## physics

with what velocity must a ball be thrown in order to achieve the height of 50 ft.? and how long will it stay in the air?

1-(10w+7)=

96. ## Pre-Calculus

Q.Determine the sum of each infinite geometric series. t_1= 8 r = -2^1/2 ---------------------------------------- A.This is a divergent series because the absolute value of r is greater than 1. ---------------------------------------- Q. The first term of

97. ## Chemistry and physics

What causes a red glow when the iron and sulphur mixture is heated?

98. ## math

how do i do this equation ? -158=-2x+ 2(7x -7) . thank you

99. ## chemistry

What pairs of ions produce similar colours in the flame test? Use your periodic table of elements to explain the reason for this. The pairs with similar colours were Ba2+ and Cu2+, and Sr2+ and Li+. Ba and Cu had light green-ish colours, and Sr and Li had

100. ## Music

If you were to add a Dor to a quarter note in four-four time, how many beats would the dotted quarter note occupy? 1. Half a beat 2. One beat 3. One-and-a-half beats 4. Two-and-half beats

101. ## law

what are four charismatic theories?

102. ## Calculus: Optimization

I have no idea how to approach this problem, if someone knows just how to relate h, r with H,R, that would be extremely helpful and I can workout the rest! Thank you in advance. Given a right circular cone, you put an upside-down cone inside it so that its

103. ## English

Would these be good examples of hopelessness, hope, and realism in A raisin in the Sun 1. hopelessness Mama :Well whether they drinks it or not ain't none of my business. But whether I go into business selling it to 'em is, and I don't want that on my

104. ## life orientation

Evaluate he extent to which peer pressure can impact negativity on intrapersonal conflict.give two well explained examples to support answer

105. ## math

If a city has an atmospheric pressure of 12.27 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your answer to the nearest foot.)

106. ## Pre-calculus

Find the first two terms of a geometric sequence if t_3+ t_4 = 50 and t_4 + t_5 =100? t3= a(r^2) t4= a(r^3) t5= a(r^4) a(r^2)+ a(r^4)= 100 ------------------------- a(r^3)+ a(r^4) = 50 ar^3 ----- = 2 ar^2 r = 2

107. ## Life orientation

How intrapersonal conflict can lead to emotional stress

108. ## math

35. Aaron wants to find an function that relates the price of a pizza to its size. He knows that this function need s to be non- linear. Which function below should he use? A. y=4piex B. y=pie(x-3) C. y=pie(x-3)^2 D. y=pie(x-3)^2+3(x+7)

109. ## Physics

Two boxes, A and B, are connected to each end of a light vertical rope. A constant upward force 90.0N is applied to box A. Starting from rest, box B descends 11.0m in 3.50s . The tension in the rope connecting the two boxes is 30.0N a) What is the mass of

110. ## chemistry

In a 1L beaker, 203mL of 0.307 M ammonium chromate was mixed with 137mL of 0.269 M chromium(iii) nitrite. 3(NH4)2CrO4 + 2Cr(NO2)3 -> Cr2(CrO4)3 + 6NH4NO2 If the percent yield of the reaction was 88.0 %, what mass of solid product was isolated?

111. ## Health

What has the society done concerning the current problems with teen pregnancy?

112. ## Algebra

If a quadratic has a vertex at (-2,2) and passes through (-1,0) what is its equation in standard form? A. y = -2(x-2)^2 + 2 B. y = -2(x+2)^2 + 2 C. y = -(x+2)^2 - 2 D. y = (x+2)^2 + 2 Is the answer B?

113. ## chemistry

In a 1L beaker, 203mL of 0.307 M ammonium chromate was mixed with 137mL of 0.269 M chromium(iii) nitrite. 3(NH4)2CrO4 + 2Cr(NO2)3 -> Cr2(CrO4)3 + 6NH4NO2 If the percent yield of the reaction was 88.0 %, what mass of solid product was isolated?

114. ## mathematics literacy

There are seven red peppermints in a packet of 22 peppermints.what percentage of the peppermints are red?

mrs. lens wants to put a ribbon around the edge of a pillow. which tool and unit should she use to measure the perimeter of the pillow? measuring tape or ruler or yard stick?

116. ## math

A perpendicular to the line -4x +3 = 0 point (8, 5). Determine its equation x = 4/3 undefined y = 5

117. ## Check my answers SS

Which of the following state program areas consumes the largest part of the executive budget? (1 point) human services education *** natural resources transportation 2. Which state department is responsible for mental health-related issues and welfare? (1

118. ## algebra

an electron cuts a 12 ft piece of into two pieces. one piece is 7 ft longer than the other how long are the pieces?

119. ## math

I'm doing my math hw, what does the sign ' mean for sets? Thanks

120. ## Physical Science

A rock is dropped off a 20m tall cliff. How long does it take to get to the bottom of the cliff? What is the instantaneous velocity right before it hits the bottom of the cliff?

121. ## physics

You are sitting in a car going 20 m/s relative to the ground and decide to throw a ball backwards with a velocity of 4m/s relative to your car. A person in another car behind you sees the ball moving towards him with a velocity of 2.50 m/s relative to his

122. ## English

Sorry for asking a lot of questions. But what can I write as an example of realism in A a Raisin in the Sun I'm having trouble finding an example of it

123. ## algebra

the midpoint of a line segment is (3,4). one of the endpoints of that line segment is (7,4). what is the other endpoint?

124. ## PNU

An element has a body-centered cubic(bcc) structure with a cell edge of 288pm the density of the element is 7.2g/cm3. How many atoms are present in 208g of element

125. ## science

Which explains how the greenhouse effect and greenhouse gases can affect global temperatures? A. The more greenhouse gases that are in the atmosphere, the more heat will be trapped, thereby increasing global temperatures. B. The more greenhouse gases that

126. ## Physics

Suppose you had a circuit with three resistors in series and you measured I=7.0 milliamps; V = 14.7 volts; V1= 3.5 volts and V2 = 1.4 volts. What would be the voltage across the third resistor? What would its resistance be?

127. ## math

In the geometric progression, the first is a and the common ratio is r. The sun of the first two terms is 12 and the third term is 16 Determine the ratio (ar^2)/(a+ar) If the first term is larger than the second term, find the value of r.

128. ## chemistry

By titration, 26.7 mL of aqueous H2SO4 neutralized 26.2 mL of 0.028 M LiOH solution. What was the molarity of the aqueous acid solution?

129. ## algebra

jake and jessie are standing next to each other in the sun. if jake's shadow is 48 inches long, and he is 72 inches tall, how long is jessie's shadow, in inches, if she is 66 inches tall?

130. ## math - relations and functions

What is mean , Write a set of 10 ordered pairs that represent a function?

131. ## algebra

a bug crawls clockwise around the outside rim of a clock from 12 to 4 and travels 7 inches. if a second bug crawls around the outside rim from 6 to 11, in the same direction, how many inches did the bug crawl?

132. ## math

3/8jof the cast in a musical hE TO SING. WHAT FRACTION OF THE CASt DOES not have to sing?

133. ## math

Find the value of θ between 0° and 360° satisfying the equation 5 sin θ = 4 θ= sin-1(4/5) = 53.13, 143.13

134. ## History

Who were the "antis" (ant-imperialists) and why were they opposed to U.S. expansion? (HINT: different people had very different reasons.) Try to put yourself in the shoes of someone living in the 1890s: do you think you would have supported or opposed

135. ## GEOMETRY

What are the angle measures of the triangle? A right triangle with a hypotenuse measuring 14sqrt3 and legs measuring 7sqrt3 and 21 30°, 60°, and 90° 45°, 45°, and 90° 60°, 60°, and 60° They cannot be determined.

136. ## Calculus

Find an equation of a line tangent to y = 2sin x whose slope is a maximum value in the interval (0, 2π]

137. ## algebra

What do you get if you drop a grand piano down a mine shaft

138. ## Math

Three boxes each contain a number of billiard balls. One box contains only even-numbered balls, one box contains only odd numbered billiard balls, and the third box contains a mixture of odd and even numbered balls. All the boxes are mislabeled. By

139. ## oil prices

supply and demand affect the price of oil

140. ## Society

What are the individual and social implications of teenage pregnancy?

141. ## math

the sum of the first four terms of a geometry series is 15 and the sum of the next 4 terms is 240.determine the positive constant ratio.

142. ## algerbra

Find the distance between points P(3,-6) and Q(6,4). Round to the nearest tenth.

143. ## chemistry

Consider the reaction of 14.20ml of 0.141 M H3PO4 and 0.0521 M Ba(OH)2. 2H3PO4 + 3Ba(OH)2 ->Ba3(PO4)2 + 6HOH What volume of Ba(OH)2 is required to completely react with the H3PO4?

144. ## physics

A horizontal force of 150 N is used to push a 45.0-kg packing crate a distance of 5.75 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150-N force (b) the coefficient of kinetic

145. ## chemistry

Consider the reaction of 14.20ml of 0.141 M H3PO4 and 0.0521 M Ba(OH)2. 2H3PO4 + 3Ba(OH)2 ->Ba3(PO4)2 + 6HOH What volume of Ba(OH)2 is required to completely react with the H3PO4?

146. ## Calculus Chain rule

How can derive this function?f(x) = 2/(9x^5+1)^5 The answer is The answer is -450x^4/(9x^5+1)^6 Can you please show why? Thank you

147. ## Math 222

18z plus 45 plus z^2 *My addition sign is not working*

148. ## Math

I am asked to graph a triangle with the vertices (-3, 2), (5, 6), and (6, -4) after performing a dilation about the origin of scale factor 4. What does "about the origin" mean? Is this the same as just multiplying the ordered pairs by 4? Are the new

149. ## Math

Identify the geometric figure that each object represents. _____1. Tip of the hair _____2. Chalkboard _____3. Ceiling _____4. Grain of sand _____5. Mole _____6. Flaslight _____7.String _____8.Wall _____9.Tip of a pen _____10.Edge of a box

150. ## kayli

why did a portion of the tabletop get cold when natasha placed her drink on the table?

151. ## Math 222

). a^4b plus a^2b^3

152. ## math

The Position of two A and B on the earth’s surface are (36°N, 49°E) and (360°N, 131°W ) respectively. (a) The difference in long between town A and town (b) Given that the radius of the earth is 6370, calculate the distance town A and town B. (c)

153. ## Math

Frank paid very well finance rate of 1.5% on the first \$500 and 1% at any amount above \$500 how much did he pay at the unpaid balance was \$741.23

Case2:r

155. ## Algebra

Find five solution sets for the linear equation 3x - 5y = 15.

156. ## math

A real estate agent makes 4.5% commission on every property she sells. How much commission does she make on a sale of a house for \$132,500.00? Don't understand how to do the problem. Can you help me? Thank you

157. ## social studies help please

Which of the following was NOT a reason why there was less industrial development in the South than in the North? A.because the rockiness of southern land made it difficult to develop railroads. B. because there was a lack of capital in the South. C.

158. ## math

Show that the series 1 + 2x/5 + 3x^2/25 + 4x^3/125 + ....is convergent if -5

159. ## Statistics

Approximately 6% of the male population is color blind. If a random sample of 250 male adults is tested for color blindness, what is the probability that at least 10 but no more than 20 will be color blind?

160. ## Chemistry

What is the name of the substance with formula Cu(H2O)6SO4?

161. ## Technology

Is there a app that shuts off iPhone without pressing home or sleep button?

162. ## math

Gary measured the middle school and made a scale drawing. He used the scale 1 inch = 5 feet. The gym is 85 feet long in real life. How long is the gym in the drawing?

163. ## math

Henry is attending a rodeo in Union County. The nearest airport is in Vindale, which is 33 miles away. On a map, the rodeo grounds and the airport are separated by 3 inches. What scale does the map use?

164. ## Math

A fuel dealer makes a profit of shillings 520 for every 1000 liters of petrol sold and shillings 480 for every 1000 liters of diesel sold. In a certain month the dealer sold twice as much diesel as petrol. If the total fuel sold that month was 900,000

165. ## chemistry

Predict if a precipitate will form when 20.00 mL of the 50% saturated solution is mixed with 20.00 mL of 0.0100M of the following solutions.? the saturated solution is : BaCO3, it has the Ksp of 5.1 x 10^-9 the solubility is 7.1 x 10^-5 M. I don't know how

166. ## Pre ALGEBRA

HELP PLS MS SUE. Find the surface area of a sphere with a radius of 8 cm.

167. ## imp

Is dirt an abstract or concrete and why?

168. ## science

a car travels first one third with speed of 10km/hr,next one third distance with 20km/hr.What is the average of car for whole journey

169. ## AP CHEM

A solution formed by mixing 13.0 mL of 0.013 M Ba(OH)2 with 31.0 mL of 7.0 ✕ 10-3 M NaOH. Calculate [OH-]