# Questions Asked onOctober 13, 2010

1. ## Chemistry

Calculate the enthalpy change for the reaction: 2S(s) + 3O2(g) --> 2SO3(g) Use the following thermochemical equations: Reaction S(s) + O2(g) --> SO2(g) Delta H(in kJ) -296.8 2SO2(g) + O2(g) --> 2SO3(g) Delta H(in kJ) -197.0

2. ## chemistry

A laboratory procedure calls for making 400.0 mL of a 1.1 M NnO3 solution. What mass of NaNO3 (in g) is needed?

3. ## physics

Camping equipment weighing 6000 N is pulled across a frozen lake by means of a horizontal rope. The coefficient of kinetic friction is 0.05. The work done by the campers in pulling the equipment 1000 m at constant velocity is: We never utilized friction

4. ## physics

vector b has x,y, and z components of 4.0, 6.0, and 3.0 units, respectively. Calculate the magnitude of b and the angles that b makes with the coordinate axes.

5. ## physics

A space shuttle is launched from rest. It takes 8.00s to reach 165km/h , and at the end of the first 1.00 min its speed is 1650km/h . a) what is the avg. acceleration in (m/s2) during the first 8.00 seconds? b) what is the avg. acceleration in (m/s2)

6. ## General Physics I

A 50-N force acts on a 2-kg crate that starts from rest. When the force has been acting for 2 s the rate at which it is doing work is: I found this question online so I saw the answer is 2500 Watts. What I don't understand is how to come to this

7. ## Math

For every girl taking classes at the martial arts school, there are 3 boys who are taking classes at the school. If there are 236 students taking classes, write and solve a proportion to predict the number of boys taking classes at the school.

8. ## college physics

Arthur (mass 78 kg) and Violet (mass 31 kg) are trying to play on a seesaw. If Violet sits 3.6 m from the fulcrum, at what distance from the fulcrum should Arthur sit?

9. ## Physics

I have one problem I just can't figure out, A machine in an ice factory is capable of exerting 3.30 * 10^2 N of force to pull large blocks of ice up a slope. The blocks each weight 1.21 * 10^4th N. Assuming there is no friction, what is the max angle that

10. ## chemistry

How many moles of KCL are contained in 114 mL of a 1.85 M KCL solution?

11. ## science

explain why a graph showing the relationship between the amount of a particular element and the element's mass is a straight line?

One box holds 16 crayons. Another box holds 24 crayons. Write a sentence using words that compare the crayons in the two boxes. (not a number sentence 24>16)

13. ## Physics

A ball is thrown straight upward and returns to the thrower's hand after 3.40 s in the air. A second ball is thrown at an angle of 29.0° with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown

14. ## math

Three consecutive even numbers have a sum between 84 and 96. a. Write an inequality to find the three numbers. Let n represent the smallest even number. b. Solve the inequality

15. ## Chemistry

How many kilograms of chlorine are in 26 kg of C2F3CL3?

16. ## chemistry

How many grams of water are produced from the reaction of 1.26 mol of oxygen according to this equation? 2H2(g) + O2(g) ¨ 2H2O(g)

17. ## Genereal Physics I

A 0.49 kg ladle sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (k = 640 N/m) whose other end is fixed. The ladle has a kinetic energy of 260 J as it passes through its equilibrium position (the point at which the

18. ## chemistry

if 22.5 mL of 0.383 M HCl are required to completely neutralize 20.0 mL of KOH, what is the molarity of the KOH solution?

19. ## spanish

1.Tienes la maleta? No, no (lo/la) tengo. 2. Mi tio tiene las maletas en su coche. Va a facturar (los/las) en el aeropuerto. 3. Quien tiene el itinerario? Rosabla (lo/la) tiene. 4. No tengo los pasaportes. Manuel (las/los) tiene.

20. ## calculus

(1 pt) A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 15 dollars, the company sells 132 units per week. When the price is 27 dollars, the number of DVDs sold decreases to 84 units

21. ## college algebra

Use point-slope form to write the equation of the line with the given properties. Write the equation in standard form. m is undefined passing through P(-7, -7)

22. ## chemistry

Fe(S)+ 2 HCl(ag) --> FeCL2(ag)+ H2(g What mass of H2 (g) is produced from the reaction of 5.2 Fe(s) with excess hydrochloric acid?

23. ## Physics

Calculate the tangential speed of the earth around the sun (assuming a circular orbit).

24. ## Chemistry

A 4.5 g piece of magnesium ribbon undergoes combustion in air to produce a mixture of two ionic solids, MgO and Mg3N2. Water is added to this mixture. It reacts with the magnesium oxide to form 9.97 g of magnesium hydroxide. Assume all reactions go to

25. ## psychology

Advertisers have been using the principles of classical conditioning for years in attempts to associate pleasant feelings with their products. One particular genre of ads (for beer) is particularly famous for doing so by placing scantily clothed women

26. ## Physics

A box weighing 600 N is pushed along a horizontal floor at a constant velocity with a force of 250 N parallel to the floor. What is the coefficient of Kinetic friction between the box and the floor?

27. ## Politics

Compare and contrast the views of the Federalists and the Anti-Federalists on the issues of representation, governmental power, size and scope of government, and tyrannical rulers. We know that the Federalists won out in the end. In your view, though,

28. ## AP Calculus

Sand pouring from a chute forms a conical pile whose height is always equal to the diameter. If the height increases at a constant rate of 5 ft/min, at what rate is sand pouring from the chute when the pile is 10 ft high?

29. ## statistics

The number of defects in a random sample of 200 parts produced by a machine is binomially distributed with p = .03. Based on this information, the expected number of defects in the sample is 6. Is it True or False?

30. ## Macroeconomics

Durring the late 1970's prices quoted in terms of the Israeli currency, the shekel, rose so fast that the grocery stores listed their prices in terms of the U.S. dollar and provided customers with the dollar-shekel conversion tables that they updated

31. ## IPC

The specific heat of gold is 0.031 calories/gram°C and the specific heat of silver is 0.057 calories/gram°C. If equal amounts of each metal are exposed to equal heating, which will heat up faster? The answers are: 1) The silver will heat up almost twice

32. ## physics

A car traveling at 90 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.72 m. What was the average acceleration of the driver during the collision? Express the answer in terms of "g's," where 1.00g =

33. ## Chemistry

The unbalanced equation for the combustion of ethanol is as follows: C2H5OH(l) + O2(g) ¨ CO2(g) + H2O(g) How much heat, in kJ, is liberated when 4.84 kg of C2H5OH(l) is burned? Species Delta H‹f (kJ/mol) H2O(g) -241.8 CO2(g) -393.5 C2H5OH(l) -277.7

34. ## chemistry

calculate the molarity of a solution in which 22.6g C6H12O6 is dissolved in 1.08L of solution

35. ## chemistry

net ionic equations of nitric acid with CO3 2- and with PO4 3-.

36. ## economics

U.S. cigarette makers face enormous punitive damage penalties after losing a series of class-action lawsuits that heaped penalties amounting to several hundred billion dollars on the tobacco industry. In spite of the huge penalties, The Wall Street Journal

37. ## AP Calculus

Wheat is poured through a chute at the rate of and falls in a conical pile whose bottom radius is always half the altitude. How fast will the circumference of the base be increasing when the pile is 8 ft high?

38. ## AP Chemistry

HCN is mixed with water. Which is the best description of what you would expect to find in the solution?

39. ## physics

The force shown in the figure below is the net eastward force acting on a ball. The force starts rising at t=0.020 s, falls back to zero at t=0.062 s, and reaches a maximum force of 55 N at the peak. Determine with an error no bigger than 25% (high or low)

40. ## Chemistry

When 1.11 g of vanadium is dissolved in HCl, 0.066 g of H2 is produced. Calculate the value of x for the compound VClx produced according to the chemical equation: V = xHCl -> VClx + 0.5x H2

41. ## Chemistry

Copper metal can be obtained by heating copper oxide in the presence of carbon monoxide, CO, according to the reaction: CuO(s) + CO(g) --> Cu(s) + CO2(g) Calculate Delta H° in kJ using the following thermochemical equations. Reactions 2CO(g) + O2(g) -->

42. ## Physics

A block of wood is pulled by a horizontal string across a horizontal surface at a constant velotcity with a force of 20 N. What is the coefficient of kinetic friction between the surfaces?

43. ## chemistry

If 20.0mL of an unknown acid was titrated with 2.0 M KOH and 60.0 mL KOH was used what is the molarity of the unknown acid?

44. ## Physics

A daredevil on a motorcycle leaves the end of a ramp with a speed of 33.0 m/s as in the figure below. If his speed is 31.3 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.

45. ## math 118

use divisions to convert the base ten numeral 555 to base six

46. ## Multiplicative inverse

Is the multiplicative inverse for 12/13 13/12?

47. ## English

I have a few more questions to ask you. I really hope you can answer them, too. 1)He lied to her about what his last words had been. 2)He lied to her about his last words. 3) She wears her hair in a plait today. 4) He's got a pierced nose and pierced ears.

48. ## Chemistry

I am very confused with this problem, i tried using the percent yeild but i got stuck. Can u help? The O'Keefe's have 75 gallons of cucumbers for pickling. The 1.5 M KOH solution costs \$3.50 per liter, 9 M H2SO4 solution costs \$8 per liter, and ethanol

49. ## Physics

A box of mass m with an initial velocity of v0 slides down a plane, inclined at theta with respect to the horizontal. The coefficient of kinetic friction is u. The box stops after sliding a distance x. How far does the box slide? Solve in terms of Vo, u,

50. ## English 2

(From A Separate Peace) 2. Unlike Finny, Gene tends to be a. spontaneous b. contradictory c. envious d. rebellious C? 3. For Gene, jumping from the tree seems to be a way to a. reject his past life of conformity b. gain new respect from his classmates c.

51. ## Accounting

Nafari Company's sales budget has the following unit sales projection for each quarter of the calendar year 2011. January -March 1,080,000 April-June 1,360,000 July-September 980,000 October-December 1,100,000 Total 4,520,000 Sales for the first quarter of

52. ## government

This item can give a President real leverage in influencing Congress.

53. ## Computer Networking

Your company expanded recently to include two new buildings for a total of three, roughly arranged in a triangle with each building 500 meters apart. Previously, these buildings were wired with Category 3 UTP running 10BaseT Ethernet. The IT director

A panel of four light switches can be set in 2^4 ways. A panel of lfive light switches can be set in twice this many ways. In how many ways can five light switches be set? I got 2^4=16 16x2=32 Is this right. If not can someone help?

55. ## Say NO! to Drugs

2.What's one thing your school or community could do to help prevent substance abuse in your area? What is this question exactly asking? This is what I have put: One thing that my school or community could do to help prevent substance abuse in my area is

56. ## Chemistry

Im not sure where to factor in the two longer compounds for this problem. "Rank the given compounds based ontheir relative acidities" HF H2C--CH2 NH3 CH4 HC---CCH3 This is the order i thought it was, but this isnt right apparently... (--- means triple

57. ## physics

A duck has a mass of 2.9 kg. As the duck paddles, a force of 0.07 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.21 N in a direction of 60° south of east. When these forces begin to act, the velocity of the

58. ## US History

7. Which of the following was an advantage the North had over the South? a. more experienced generals b. military support from Britain c. more money to spend on war d. full support of all its citizens C? 8. In their Reconstruction, policies, both President

59. ## statistics

Rework problem 15 from section 3.5 of your text involving a true-false test. Assume that 20 questions are answered by guessing. What is the probability of exactly 15 correct answers?

60. ## Finance

Your best taxable investment opportunity has an EAR of 4%. You best tax free investment opportunity has an EAR of 3%. If your tax rate is 30%, which opportunity provides the higher after tax interest rate?

61. ## chemistry

Carminic acid is a naturally occuring red pigment and contains only carbon, hydrogen, and oxygen. It is 53.66% C and 4.0p% H by mass. A titration required 18.02 mL of 0.0406 M NaOH to neutralize 0.3602 g of carminic acid. Assuming that there is only one

62. ## Science (Bonding)

Can someone show me how to draw a dot and cross diagram for kf, showing only the outer electron shells. I remember doing it and school and learning that it was a ionic bond if i remember correctly. Thankyou.

63. ## physics

Suppose the water near the top of Niagara Falls has a horizontal speed of 2.7 m/s just before it cascades over the edge of the falls. At what vertical distance below the edge does the velocity vector of the water point downward at a 72° angle below the

64. ## social studies

how to make an ancient egyptian tomb diorama

65. ## physics

Can someone tell me if my answers are correct? A .145 kg block of wood hangs from the ceiling by a string. A bullet with a mass of .004 kg and a speed of 540 m/s strikes the block. After the collision, the block with the bullet embedded rises 42 cm up. a)

66. ## Chemistry

A 1.85-g sample of a mixture of KCl and MgCl(subscript 2) is treated with excess AgNO(subscript 3) (aq). If 3.82 grams of AgCl(s) are obtained, then what is the percentage by mass of KCl in the original mixture. Can someone tell me what the balanced

67. ## PHYSICS

At some amusement parks, to get on a moving "car" the riders first hop onto a moving walkway and then onto the cars themselves. Why is this done? If you are riding on a train that speeds past another train moving in the same direction on an adjacent track,

68. ## Chem

If 20.0g acetylene is allowed to completeyl react with o@ how many g of O2 are reacted? 2C2H2 +5O2----4CO2 +2H20

69. ## Chemistry

When 25.0 g of ethanol vapor condenses, 23.6 kJ of heat is released. How much heat is required in kJ to vaporize 254 g of ethanol?

70. ## College Physics!

Is there any way i can just get these problems set up? I just need help with the steps on how to do it. A box weighing 600 N is pushed along a horizontal floor at a constant velocity with a force of 250 N parallel to the floor. What is the coefficient of

71. ## Accounting

Nafari Company's sales budget has the following unit sales projection for each quarter of the calendar year 2011. January -March 1,080,000 April-June 1,360,000 July-September 980,000 October-December 1,100,000 Total 4,520,000 Sales for the first quarter of

72. ## AP Chemistry

Which response includes all of the following LiOH, KOH, Ni(OH)2, Mg(OH)2, Ca(OH)2 that are insoluble bases, and no others?

73. ## Chemistry

1) Balance this redox reaction using the oxidation-number method. Zn + O2 + HCl ® ZnCl2 + H2O 2) Balance this redox reaction using the half-reaction method. (basic solution) Zn + MnO4- ® Zn(OH)2 + MnO2

74. ## physics

A 1260.4 kg car is traveling at 21.5 m/s when the driver takes his foot off the gas pedal. It takes 4 s for the car to slow down to 20 m/s. How large is the net force slowing the car? Answer in units of N.

75. ## Geometry

Trapezoid JKLM has an area of 54 ftsqd. IF RC=6ft and ML=8ft, find JK

76. ## English Lit

Discuss an instance of a difference in "shared" values you noted from this week's readings. Do instances of differences in "shared" values play a part in your extended family's life? The Readings Are: Read the following chapters, stories, and poems in the

77. ## Math

A thousandths grid is completely coloured in when tree different decimals are shown. One decimal is double of the others.

78. ## English

Thank you very much for your corrections. Here are some more sentences I'm not sure of. 1)Independence Day commemorates the signing of the Declaration of Independence by the Continental Congress on 4th of July, 1776. 2)What were the causes which led to the

79. ## Math

I have a few questions about T-Matrix. In excel, I am suppose to work with powered matrices to construct a weighted T matrix, using a scalar of .7. Does this mean I multiply each of the powered matrices by .7? Or do I power the powered matrices by .7? Or

80. ## math

q = 200 − 5 p What is the (instantaneous) rate of change of revenue with respect to price when the price is \$ 12? At what price is the derivative of revenue with respect to price exactly zero?

81. ## Chemistry

A 2.25 g sample of hydrazine, N2H4, is burned in a bomb calorimeter that contains 6,402.45 g of H2O, and the temperature increases from 25.00° C to 26.17° C. The heat capacity of the calorimeter is 3.64 kJ/° C. Calculate Delta E for the combustion of

82. ## Physics - Potential difference (check + help)

A pair of horizontal plates are situated in a vacuum and separated by a distance of 1.8cm. What potential energy would need to be connected across the plates in order to hold a single electron suspended at rest between them? Ans: I used the formula (qv)/d

83. ## physics

A 6840 N wrecking ball hangs from the end of a steel cable. What is the net force acting on the wrecking ball if the cable snaps? equation please and explain

Write a two column proof. 1.Reflexive property of Congruence. -Thanks

85. ## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

86. ## Math

Evaluate the expression using mental math. Justify each of your steps. 1) 4(19)(-25) 2) 17+32+23

87. ## Physics

A person walks 8.4522x10^1 m East, then turns around and walks 7.8409x10^1 m West. The total time to walk this distance was 8.7343x10^2 s. What is the speed of the walker, expressed to 3 significant figures?

88. ## Chemistry

How many kilograms of chlorine are in 26 kg of C2F3CL3?

89. ## math

one of the equal sides of an isoceles triangle is 3m less than twice its base. The perimeter is 44m. Find the length of the sides. The teacher gave us the answer of 17m for the two sides and 10 for the base. What formula did he use to find this.

90. ## History

Where was Sumer located in Mesopotamia? It is located near the Persian Gulf, the cities within Sumer are Babylon and Kish Thanks Again Ms.Sue

91. ## English 2

(From A Separate Peace) 2. Unlike Finny, Gene tends to be a. spontaneous b. contradictory c. envious d. rebellious C? 3. For Gene, jumping from the tree seems to be a way to a. reject his past life of conformity b. gain new respect from his classmates c.

92. ## Spanish

I have two questions about translation. If asked this question, how do I answer it. Cual es tu numero de telefono? I know it is asking my phone number which is 447-7161 but I don't know how to put it in sentence form. The next question is Que te gusta

93. ## calculus

Given the graph of f(x) find the graph of 2 f( -3x - 2) - 4 Is this correct??? First, compress the graph horizontally by 3. Second, reflect the graph over the y-axis. Third, shift the graph 2 units to the right. Fourth, stretch the graph vertically by 2.

94. ## Say NO! to Drugs

Why do you believe young people like to do drugs? I think young people choose to do drugs because they think it's cool and that they can be considered popular among the others who choose not to. Some youngsters find it as amusement and like to get high;

95. ## physics

A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 795 m/s. The barrel is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.042 m below the center. What is the horizontal distance between the

96. ## chemistry

A volume of 0.285 L of a gas at STP weighs 0.537 g. Calculate the molar mass of the gas.

97. ## algrabra 1

the table lists data regarding the average salaries of several profssional athletes in the years 1991 and2001 a) use the data points to find a linear function that fits the data b) use the function to predict the average salary in 2005 and 2010 in 1991 the

98. ## calculus

Find the area of the region lying inside the polar curve r = 2(1 − cos theta) and outside the polar curve r + 4 cos(theta)= 0.

99. ## chemistry

the alkali metals are a group of oxidation metals that decrease in melting point down the group. Halogens are non-metals that get coloured in colour and less reactive down the group. the transition elements in the middle of the periodic table. hey are

100. ## physics (projectile motion)

A cow on a trebuchet is catapulted toward a castle wall. The cow is released with an inital velocity of 50 m/s at a 60 degree angle above the horizontal. At its release the cow is 8 m above the ground. The castle wall is 100 m from the trebuchet and the

101. ## algebra

GRAPH EACH EQUATION AND IDENIFY THE Y-INTERCEPT 6X-3Y=9 PLEASE SHOW STEPS IF POSSIBLE.

102. ## English

I'm reposting my essay, please proffread and see if I improved. Thanks! oppressively hot afternoon at Amy's grandma's farm; when my eyes caught a short girl that was close to the ground with curly, frizzy hair. Heedlessly, she moved into Amy's direction

103. ## physics

a force of 125N is required to extend a spring by 2.8cm. what force is required to stretch the same spring by 3.2cm

104. ## physics

5. What is the acceleration of a 20 N object that is pulled up a 30° incline by a 25 N force? The coefficient of friction is 0.30

105. ## physics

How long does it take for the ball to hit the ground 7 meters below if it's thrown straight up wit intial velocity of 2 m/s squared?

106. ## physics

A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 795 m/s. The barrel is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.042 m below the center. What is the horizontal distance between the

107. ## Med. Term.

I need help unscrambling the following words. BLHIOSUTR, PANPEILIO, LYNSAIGPIGVOT, TAOPAGMPNOREHHEELY. Tried some unscramble sites and NONE of them know what they are.

108. ## Macroeconomics

A bank has issued 4 billion in transactions deposits and 2 billion in time deposits and other nontransactions deposits. Its other liabilities and net worth equal 1 billion. The bank has 100 million in total reserves. The only reserve requirement that this

109. ## math

Hello! My name is Robert and I am in 6th grade. I have a question about my homework and my mom and dad cant help u because they are still at work and i need help.Can you please tell me what a division problem that has the same answer as 4.65 divided by

110. ## Calc. Limits

Are these correct? lim x->0 (x)/(sqrt(x^2+4) - 2) I get 4/0= +/- infinity so lim x->0+ = + infinity? and lim x->0- = + infinity? lim x->1 (x^2 - 5x + 6)/(x^2 - 3x + 2) I get 2/0, so lim x-> 1+ = - infinity? and lim x->1- = + infinity? lim h->0

111. ## Computer Science

1.Write an Assembly program that reads in a number of cents. The program will write out the number of dollars and cents separately. Sample Run: ? 324 3 24 2. Write an Assembly program to read three numbers in from the user, and output BOTH the sum and the

112. ## History

Who invented the modern day alphabet? Phoenicans Thanks Mrs. Sue

113. ## Physics - electrical field and force

A test charge of +5.0*10^-6 experiences a force of 2.0*10^3N(s) when placed at the midpoint of two oppositely charged parallel plates. Assuming that the plates are electrically isolated and have a distance separation of 8.0mm. What will be the force

what is a question with the word there force

115. ## PROBABILITY

The list of 16 topics was given to students to prepare for exam. 16 students prepared themselves for all 16 topics, 6 students prepared for 10 topics, and 3 students prepared only for 6 topics each. The rst invited student was prepared for 2 topics

116. ## ENGLISH

CAN SOME PLEASE HELP ME I HAVE TO WRITE AN ANOLOGY AND I AM NOT SURE WHAT TO WRITE ABOUT. WHAT I CAME UP WITH WAS: BEING A PARENT IS LIKE TAKING AN EXAM. IS THAT GOOD? IM GNA SUPORT WITH DETAILS.

117. ## college criminal justice

which theory of crime do you think best explains the prevalence of crime in the United States; Explain your answer by giving an example?

Major League Baseball is divided into the National League and the American League. The World Series championship is a “best-of-seven” series between the National League champion and the American League champion; the first team to win four games wins

119. ## math

y = 2.5 ·4^x as the equation for the blue line shown in the graph, rather than the equation given in your text. Note that your line will now be tangent to the graph at the point ( 0, 2.5 ). Enter the value of c here

120. ## physics

Car 1 approaches an intersection with a momentum of p1i=(11,000 kg*m/s)x + (-370 kg*m/s)y. Car 2 approaches the same intersection with momentum p2i= (4,000 kg*m/s)x + (2470 kg*m/s)y. The cars collide and immediately the momentum of Car2 is p2f= (2100

121. ## math

30 people and they have to be fed. if hot dog buns come 12 to a pack and hot dogs come 8 to a pack . how many packs are needed to feed them without any left over?

122. ## Calculus

How to simplify for ln(3+e^8)?? I thought It could be ln3+8. But it was wrong. Help me!

What is the difference between -3celsius and 8 celsius

124. ## chemistry

potassium-a metal that catches fire whet it reacts with water, chlorine-a green poisonous gas bromine-a reddish brown liquid lithium-the least reactive of the alkali metals neon-an nonreactive gas iron-a metal with very high melting point

125. ## Physics

When an object is moved from sea level to the top of a really high mountain, what, if anything changes about the weight of the object? Could someone please help me explain this problem. THANK YOU!!!

126. ## Chemistry

How much hydrogen and oxygen must react to produce 65.00 grams of water? 2H + O2 -> 2H2O

127. ## maths

Two hikers begin walking towards each other from an initial distance of 20 km apart. Hiker P averages 4 km/h while hiker Q averages 6 km/h. When and where do they meet?

128. ## chemistry

you dissolve x in 175g of water to make a saturated solution at 50 degrees celcius. if the solution is cooled to 10 degrees celcius, how many grams of x settle out? (x=15.0 at 50 degrees)

129. ## physics

4. What force is needed to push a 15 N object up a 20° incline at constant speed when the coefficient of friction is 0.30?

130. ## calculus

find the differentiate y=cscx/ãx

131. ## chemistry

Write a formula for the compound that forms from barium and the following polyatomic ion. (a) hydroxide (b) carbonate (c) phosphate (d) hydrogen phosphate basicaly all i know is that all of these are going to start with Na. I need major help! thanks:)

132. ## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

133. ## math

what are situation and solution equations? example question is: People in a marching band stand in 8 equal rows. There are 56 people in the band. How many people are in each row?

134. ## math

The Mayan Empire, which ruled Central America for centuries, had two calendars. One calendar was the same as ours, 365 days long (without leap year). The other calendar was 270 days long, the length of a woman's pregnancy. If both start on day one at the

135. ## English

I need a really kick !@#\$%^& closing statement for my debate on censoring gangster rap (I'm for it) Its for history I know it says english but I thought it would be more english related so far I have this: Overall, censorship is justified in some cases, as

136. ## Calculus

A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS continuous at x=a. Let f(x)=2x^2+3x–14/x–2 Show that f(x)

137. ## algebra

Write ordered pair (c,F) that shows the Celcius equivelent of 86 degrees F.

138. ## physics

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 12.0 m/s when the hand is 2.40 m above the ground.

139. ## chemistry

list the trends in physical properties of: A. the group 1 metals B. the halogens. what do they mean by trends?

Posted by Megan on Wednesday, October 13, 2010 at 5:08pm. I just reposted this from the earlier post- I have two questions about translation. If asked this question, how do I answer it. Cual es tu numero de telefono? I know it is asking my phone number

Calculate the following: a) Find g(f(1)) b) Find lim x-> 1+ g(f(x)) c) Find f(g(0)) d) Find lim x->0- f(g(x)) f(x)= 1-x, x1 g(x)= -x, x0 This is where it gets hard. I have a graph for f(x) and one for g(x). I will explain them. The graph for f(x)has an

142. ## economics

Increasingly, employees are being allowed to choose benefit packages from a menu of items. For instance, workers may be given a package of benefits that includes basic and optional items. Basics might include modest medical coverage, life insurance equal

143. ## physics

5. What is the acceleration of a 20 N object that is pulled up a 30° incline by a 25 N force? The coefficient of friction is 0.30.

144. ## calculus

Find the area of the region lying inside the polar curve r = 2(1 − cos theta) and outside the polar curve r + 4 cos(theta)= 0.

145. ## CHEMISTRY- molality

what volume of hydrochloric acid of density 1.18g cm3 and containing35.0% by mass must be allowed to react with zinc in order to liberate 6.36g H2 gas? can you tell me the steps. i get so confused with this topic.

146. ## Math

Reduce each rational expression to lowest terms: 3x^2-12y^2 over x^2+4xy+4y^2

147. ## Maath

What am I doing wrong? original problem: x^2-144/x+4 times x^2-16/x+12 This is what I have so far: (x+12)(x-12)/x+4 times (x-8)(x+2)/x+12 I don't know if this is right or what to do from here.

148. ## Biology

Which is the most muscular and powerful chamber of the heart?

149. ## physics (projectile motion)

A cow on a trebuchet is catapulted toward a castle wall. The cow is released with an inital velocity of 50 m/s at a 60 degree angle above the horizontal. At its release the cow is 8 m above the ground. The castle wall is 100 m from the trebuchet and the

150. ## english - thesis statement

Based on the reading Wolf-Alice by Angela Carter I need to put together a thesis statement, regarding the development of self identity. Wolf-Alice is a feral child who lived with a pack of wolves. Group of nuns take her in to try to show her human ways

151. ## physics

4. What force is needed to push a 15 N object up a 20° incline at constant speed when the coefficient of friction is 0.30

152. ## phsyics

please I really need help with these 1. A man pulls a 300 N object across a horizontal surface using a 100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficient of friction?

153. ## physics

2. A 10 N object rests on a 10° incline. What is the normal force? What is the parallel force? A 10 kg object rests on a 10° incline. What are the normal and the parallel forces?

what is the answer for 11x-21=17-8x

155. ## english\

Find three examples from her poetry of Bradstreet's adherence to Puritan beliefs.

156. ## Biology

Can someone tell me an descriptive definition of budbreak. I can't find good definitions online.

157. ## calc

Are these correct? lim x->0 (x)/(sqrt(x^2+4) - 2) I get 4/0= +/- infinity so lim x->0+ = + infinity? and lim x->0- = + infinity? lim x->1 (x^2 - 5x + 6)/(x^2 - 3x + 2) I get 2/0, so lim x-> 1+ = - infinity? and lim x->1- = + infinity? lim h->0

158. ## chemistry

what is the pH of a solution prepared by adding 20.00 mL 0f a 0.10 M acetic acid and 10.00 mL of 0.10 M sodium acetate

159. ## art

· Summarize the distinction between art film and popular cinema in 150 to 250 words. · Provide examples of each and explain why they fall into either category.

160. ## statistics

in a scientific study there are 8 pigs 5 of which are pregant if 3 are selected at random without replaement find the probability that all are pregant

161. ## math

A(-1,-2) B(7,2) show that the lenght AB may be written in the form p root5 wjere p is an integer to be found?? is then ans just 4root5?? if not hep please thenks

162. ## Macroeconomics

A banks total assets equal 1 billion. It's Liabilities equal 1 billion. Transaction deposits equal 500 million, loans equal 700 million and securities equal 250 million. A: If the banks only other liabilities are savings deposits, what is the value of

163. ## college organic chemistry

Give the product of the substitution reactions. (CH3)2CHOSO3CH3 -> ?

164. ## US History

Why did the urban population exceed the rural population in 1920? -MC

165. ## physics

1. A man pulls a 300 N object across a horizontal surface using a 100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficient of friction

166. ## physics

2. A 10 N object rests on a 10° incline. What is the normal force? What is the parallel force? A 10 kg object rests on a 10° incline. What are the normal and the parallel forces

167. ## math

Differentiate the following function, much like problem 14 of section 3.2 (page 152) of your textbook: y = 14 J + N e^t, where J and N are given constants. Enter the derivative here:

168. ## chemistry

what are the errors in the double-indicator titration of (sodium carbonate and sodium hydrogen carbonate) against hydrochloric acid, using Phenolphthalein and Methyl orange as indicator? how can I improve the it?

what is 66/99 in lowest terms or reduced

170. ## geography

What impact did the dissolution of the Union of Soviet Socialist Republics have?

171. ## earth space science

A chemical sedimentary rock that forms mainly in restricted ocean basins in areas with high evaporation rates is an

172. ## Computers

How to do Excel Spreadsheet- Formulas? I have to do an excel spreadsheet for my computer class. Problem is my professor didn't at all explain how to do it. What formulas am I supposed to use! Please Help. The info he gave us are : Cash Sales: 56%, Rec.

173. ## English

Can you please check if everything is OK? Thank you. 1)At the time of the signing the US consisted of 13 colonies under the rule of England’s King George III. There was growing unrest concerning the taxes which had to be paid to England. 2) This was

174. ## algebra

2/3m + 17 = 17

175. ## calculus

find the area of the region bounded by the polar curve r=sqrt(6ln(theta)+3 as well as the rays theta=1 and theta=e

176. ## History/Geography

20 More oil Tankers Attacked in Pakistan. I read the article on google, as assigned. The question is; what role does culture play in this event? And I'm drawing a blank. Any help?

178. ## MATH

hELP THEISNUMBER IS GREATER THAN 700,000- THE SUM OF ALL ITS DIGITS IS 14- ITHAS NO ZEROS- THE HUNDREDS DITIT IS 3

179. ## educational psychology

basic progression of events from the student being identified as needing special education to the student receiving special education.

180. ## Science

how much work is donhe when a force of 25 newtons is used to slide a sofa 10 meters across a room

181. ## math

how many lines of symmentry on a v

182. ## Physics

A whale swims due east for a distance of 7.299x10^1 km, turns around and goes due west for 3.58x10^0 km, and finally turns around again and heads 2.64x10^1 km due east. What is the displacement (referenced to the East) of the whale, to 2 significant

183. ## calculus III

calculate the first 30 partial sums for: A)1- 1/2 + 1/3 - 1/4 + 1/5 -... B) 1 + 1/3 - 1/2 + 1/5 + 1/7 - 1/4 + 1/9 +1/11 - 1/6 +... C)1 + 1/3 + 1/5 - 1/2 + 1/7 + 1/9 + 1/11 - 1/4 +... Then estimate what A and B converge to and estimate the error.

184. ## Calculus

Posted by CMM on Wednesday, October 13, 2010 at 12:50am. Calculate the following: a) Find g(f(1)) b) Find lim x-> 1+ g(f(x)) c) Find f(g(0)) d) Find lim x->0- f(g(x)) f(x)= 1-x, x1 g(x)= -x, x0 This is where it gets hard. I have a graph for f(x) and one

185. ## chemistry

were doing an experiment. and i did the calculation for r3/r2 and r2/r1 each the answer is 2. but the teacher did this one the board in the example answer r2/r1= 2n log 1.23/log 2.0 = n where does the 1.23 come from? if the answer is a whole number do i

186. ## math

Suppose you drop a ball from the top of a five-story building onto the sidewalk 70 feet below. a. What is the initial velocity of the ball? b.Determine a function for the height of the ball t seconds after it's released. c. How long will the ball be in the

187. ## US History

Is this statement social, political, or economic? "The old former masters to do not allow us anything for our labor..." Thanks -MC

188. ## Physics

A speedboat starts from rest and accelerates at 2.689x10^0 m/s2 for 6.5062x10^0 seconds. After that, the boat then accelerates at 1.7853x10^0 m/s 2 for 3.1299x10^0 seconds. What is the velocity of the boat at the end of this, expressed in 4 significant

189. ## Physics

A motorcycle with an initial velocity of 7.99x10^0 m/s accelerates for a total of 3.3x10^0 seconds at a rate of 1.51x10^0 m/s2. What is it's velocity, to two significant figures? can anyone show the calculations for this

190. ## Physics

In 1998, NASA launched DS-1 (Deep Space 1). This spacecraft successfully flew by the asteroid 1992 KD. The propulsion system worked by ejecting argon ions at high speed. The propulsion system could increase the velocity by 7.2284x10^0 m/s per day. What was

191. ## Multiplicative inverse

Is the multiplicative inverse for 12/13 13/12?

192. ## health

anther name for a salt

asked by Denesh dillon persaud rokdjdnn, x
193. ## physics

If Frankie the kangaroo climbed out of the crate and pushed the crate with a mighty 12 newtons of force against the efforts of Fred and the man (each applying 10 newtons of force), what would be the net force on the crate from all the pushing?

194. ## physics

A person using a ladder supported on vertical wall is 3/4 of the way up the ladder. If the person climbing the ladder has a weight of 980 newtons and the ladder is 4.89 meters long, how far from the wall can the base of the ladder be placed, and not slip?

195. ## English - help needed

Posted by annie on Wednesday, October 13, 2010 at 4:29pm. Are the following sentences semantically / gramatically correct? 1)Alert the supervisor to any defective material found. 2)Some equipment have been taken away for inspection. After inspection,

196. ## biology

how do 2 neurons can communicate with each other to send messages

197. ## chemistry

is rbi2 an ion?

198. ## MATH

6000 = SUM OF 14 NO HUNDREDS

199. ## physics

1. A man pulls a 300 N object across a horizontal surface using a 100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficient of friction? normal force would be N=mg f+sin

200. ## math

Replace each question mark with an appropriate expression so that the resulting expressions are equivalent. 9(a-b)/7a=?/7a^4(a-b)

201. ## math

point A(-1,-2) B(7,2) C(k,4) K is a constant. The vertices of ABC. Angle ABC is a right angle. Ive worked out the gradient of AB to be 1/2. How do you calculate the value of k?? thanks for the help

202. ## Algebra 2

Point (-6,-2) lies on a parabola that has its vertex at (0,1). Write the equation of the parabola. Indicate whether the graph opens up or down.

203. ## Calculus

I know what the graph of: y=cos^-1(cos(x)) looks like. However, can someone explain to me how you would know how to sketch it without simply subbing in values to get points. Something about restrictions and how it is a periodic function possibly?

204. ## Physics

For a standard production car, the record for road test acceleration goes to the 1993 Ford RS200 Evolution. This car went from 0 to 2.911x10^1 m/s in 3.279x10^0 seconds. What is the average acceleration, expressed to 3 significant figures?

205. ## Health Care Management

I need 200-300 words PLEASE on Which type of organizational structure in health care is more effective and why?

206. ## math

what is the answer for 11x-21=17-8x

207. ## math

what is the answer for 4x+27=3x+34

208. ## physics

3. A 5 N block slides down a 20° incline at constant speed. What is the frictional force?

209. ## math 209

A certain medicine is given in an amount proportional to a patient's body weight. Suppose a patient weighing 108 pounds requires 135 milligrams of medicine. What is the weight of a patient !@#\$%^&quires 260 milligrams of medicine?

210. ## PROBABILITY

There are 3 lucky tickets among 10 lottery tickets. 3 tickets are drawn at random. What is a probability that one ticket selected randomly from those three is lucky?

211. ## history

Why is the studying the history of Western ideas helpful for understanding your ideal of social or political and aesthetic developments today/ Explain

212. ## English - help needed urgently

Are the following sentences semantically / gramatically correct? 1)Alert the supervisor to any defective material found. 2)Some equipment have been taken away for inspection. After inspection, ensure that all the equipment are accounted for.

213. ## English 2

I have to write a fiction anecdote that relates some kind of wisdom; an experience that teaches someone a lesson. Can I please get some ideas for this? Thanks -MC

214. ## chemistry

At what temperature (oC) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1oC?

215. ## physics

3. A 5 N block slides down a 20° incline at constant speed. What is the frictional force?

216. ## math 208

21n^4 ______ 5x^3y^4 _______ 7mn^2 _______ 20x^2y

217. ## English\

Find three examples from his poetry of Taylor's adherence to Puritan beliefs.

218. ## psychology

Should your boss ask you how to be a better leader and manager, what might you take from this material and suggest to him/her?

219. ## science

What are the three important functions water preforms in cells

220. ## Physics

A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 63.0° above the horizontal. The rocket is fired toward an 11.0 m high wall, which is located 22.0 m away. By how much does the rocket clear the top of the wall?

221. ## History

Dr. King told the parents,''Don't worry about your children. They are going to be all right. Don't hold them back if they want to go to jail for they are doing a job for all of America and for all mankind.'' What job were they doing? Please HELP me THANK

222. ## calculus

Find the 1st derivative of the function: y = 1/4 sin^2 (2x) So confused...

223. ## science

If the statement is work put a check mark on the line Lifting one book Lifting four Pushing down on books Picking up a pencil Pushing against a wall A baby shaking a rattle Thinking really hard about science

224. ## History

What god ruled the city Ur? Assyrian King ruled over Ur. Ms.Sue not really sure I have the answer.

225. ## Chemistry 106

An unidentified metal forms an ionic compound with the carbonate anion. The metal forms a 2+ cation. If the minimum ration of the number of protons in the metal to the oxygen protons s 5:6, what is the metal?

226. ## Chemistry

Can someone explain to me what the calorimetry equation - q=(m)(ΔT)(Cp) means exactly, in your own words, and how identifying an unknown metal relates to every day life? thanks

227. ## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

228. ## Calculus

A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS continuous at x=a. Let f(x)=2x^2+3x–14/x–2 Show that f(x)

Amy earns \$0.16 per unit for the work she does. For all units she produces in a week over 1,000, she receives \$0.26. What were her weekly earnings if she produced 1,725 units in one week?

230. ## Algebra 1

In 2009 the American League’s New York Yankees won the World Series. The Yankees have played in a total of 40 World Series. Of those 40 appearances the Yankees have won 27 championships. Based solely on this data, what is the probability that the New

231. ## Math

Differentiate the following function (1/x)-(2/x^2)+(3/x^3) I got (-9x-3)/x^5

232. ## EDU310

) What is the total budget expended on PK-12 Public Schooling in the United States? Break this down by individual states

233. ## chemistry

is CH3COCH3 NOT h-bond because the o is far from an H?

234. ## History

What god ruled the city Ur? Nonna or Gilgamesh. Thanks Again Sue

235. ## geometry

A piece of straight thin wire fits diagonally across a rectangle of length 7cm. If the wire is 10cm long, what would be the width of the rectangle.

236. ## Anatomy and Physiology

Describe the processes of transcription and translation and correctly identify the anticodon for the following DNA template strand-ACG TGG GCA TGA ACG TGG. Which amino acids do these anticodon represent?

237. ## chemistry

how much water (in mL's) needs to be added to 330 mL's of a 3.33 molar solution of lithium bromide to make the solution 1.44 molar

238. ## marketing

19) The process of naming broad product-markets and then segmenting them in order to select target markets and develop suitable marketing mixes is called:

239. ## Social Studies

I need help making an MLA works cited. i have 3 sources... they are all newspaper articles that i found online. someone please help me

240. ## math

what is the answer for -3g+9=15g-9

241. ## social studies

I still don't get what is the difference between classic ethnography vs. contemporary ethnography

242. ## Macroeconomics

Newspaper headlines often argue that the increasing public debt is a burden on future generations. What they mean is that a. it makes predicting future unemployment levels unpredictable. b. it causes deflation. c. it reduces both nominal and real interest

243. ## math

The population of the town of Missed Chances has, since January 1, 1972, been described by the function P = 30000 ( 1.01 )^t where P is the population t years after the start of 1972. At what rate was the population changing on January 1, 1995? people per

244. ## science

What is another way to write the volume of a 1,000 cm rectangular prism?

245. ## Physics

A 25-kg crate requires a horizontal force of 40 N to set it in motion. What is the coefficient of static friction between the crate and the floor?

246. ## math

Describe the steps you would use to add 57+29 on a hundred chart. Tell how to use the rows to find the sum.

247. ## repost-chem

Write a formula for the compound that forms from barium and the following polyatomic ion. (a) hydroxide (b) carbonate (c) phosphate (d) hydrogen phosphate basicaly all i know is that all of these are going to start with Na. I need major help! thanks:)

248. ## English Thesis

Would this be a strong thesis? Self-identity comes through a self-external realization that causes the individual to break from their reality and gain a deeper understanding of their inner identity.

249. ## HEALTH-P.E.

HOW CAN A FITNESS LEVEL AFFECT A TWELVE YEAR OLD BOY PHSICALLY, EMOTIONALLY, FINANCIALLY, AND SOCIALLY?

250. ## chemistry

A 16.5 cm3 bubble under the ocean at 2.1 atm and 12.5oC surfaces to 1.0 atm and 22.1oC. What is the new volume (in cm3)?

251. ## college pre-calc

how do you know if there are holes in a rational function?

252. ## Basic Math

How do you convert 11.4mm into cm^3? I know it's simple, but I forgot. Thanks.

253. ## american literature

Which one of the following statements is not true about the president Ratcliffe portrayed in The General History?

254. ## Algebra II

Hat size are determined by the measuring the circumference of the head in either inches or centimeters. Use ratio and proportion to complete the following table. Hat size head circum head circum (~1/2 inch) (~centimeter) 7 3/8 23 1/5 59 ? 22 4/5 ? (For the

255. ## History

There were 10 kids still standing after everyone else had been knocked down or dipersed by the fire hoses.What were they singing?

256. ## math

high=10 low=5 value=8 what is the formula to identify where 'value' is relative to the high and low (range)

257. ## History

Name four of the sumerian Gods. Enli Enki Innanna Utu Thanks Ms. Sue

258. ## Spelling Vocabulary

These are the words in the word bank that you can use:hydrant,thermos,hydrophobia, thermostat,hydrogen,thermometer, hydraulic,thermal,dehydrated,diameter, hydroelectric,geometry,chronic, speedometer,chronicle,barometer,

259. ## Algebra 2

Complete the system for the given number of solutions: x+y=7 2x+2y = ? infinite number of solutions

260. ## science

on a worksheet i have i found out the volume of the rectangle (34.2cm3) then it asks "If a block of H20 the mass would be..." i put 34.2g since that was the volume but not sure if im right?

261. ## Sociology

How does studying social institutions help sociologists understand society?

262. ## math

If you were givin a 120-question final exam, how much would you answer in the first hour? Is it 60?

263. ## math

In 2009 the American League’s New York Yankees won the World Series. The Yankees have played in a total of 40 World Series. Of those 40 appearances the Yankees have won 27 championships. Based solely on this data, what is the probability that the New

264. ## Math

All it asks is to simplify the results. 1-9a^2/a+1 divided by 4x^2-y^2/x+y

265. ## physics

you take a running jump off the end of a platform a speed of 7m/s and splash into the water 1.5 seconds later how far horizontally do you land from your takeoff point? how high is the diving platform

266. ## English

You're locked in with us. What is meaning of locked in in this sentence. IS this mean "you are with us"?

267. ## math

point A(-1,-2) B(7,2) C(k,4) K is a constant. The vertices of ABC. Angle ABC is a right angle. Ive worked out the gradient of AB to be 1/2. And the negative reciprocals is 2. How do you calculate the value of k?? thanks for the help

268. ## algebra

Write the equation 7y = 19x + 0.9 in standard form. Identify A, B, and C.

269. ## chemistry

were doing an experiment. and i did the calculation for r3/r2 and r2/r1 each the answer is 2. but the teacher did this one the board in the example answer r2/r1= 2n log 1.23/log 2.0 = n where does the 1.23 come from? if the answer is a whole number do i

270. ## Macroeconomics

Newspaper headlines often argue that the increasing public debt is a burden on future generations. What they mean is that a. it makes predicting future unemployment levels unpredictable. b. it causes deflation. c. it reduces both nominal and real interest

271. ## math

Can someone explain to me how this question has the answer like this Points:(2,3) y=-2f[2(x+5)] - 4 The answers are (2, 3) ( 2, -3) -> (2, -6)-> (1, -6) -> (-4, -10) I know it has to do with translations like 1/k etc.. but im a bit confused ):

272. ## math

How do I get the answer to 2 7/21 = /3?

Which ones are prime numbers. 43, 87, 59, and/or 73.

274. ## math 209

machine produces 192 bolts in 20 minutes. At the same rate, how many bolts would be produced in 50 minutes? thank you

275. ## psychology

What in the material on "Groups" did you find useful? How will you apply it in your life?

276. ## math

What is the prime factorization using exponents of 63

277. ## science

How can my 3rd grader make a 3D ear using any material? All things accepted except buying a kit from the store.

278. ## math

ã10(ã11-ã7) can you help me multiply and simplify

279. ## Math

what is the prime factorization of 72

280. ## math

math box! 5=15 10=25 15=35 20=45 25=55 what is the rule

281. ## math

f(x)=ax+b f(-2)=27 and f(1)=15 find the value of x when f(x)=-5 how do you work this out?? thanks so much

282. ## English ErR.

Check Jamal was all doing this to keep his heart safe. It was unique way to protect himself from the wounds of love and dishonesty. But I believe there is no substitute of true love and better understanding. The force of love is the energy that flows

what is the of 7n when n is 7565?

284. ## English

When a heart brakes, some time it makes the people a negative person, who thinks every one is a reason of his or her failure life he afraid of being decline again in his life. He tries to protect himself and make a wall around himself where no one can

285. ## math

point A(-1,-2) B(7,2) C(k,4) K is a constant. The vertices of ABC. Angle ABC is a right angle. Ive worked out the gradient of AB to be 1/2. And the negative reciprocals is -2. How do you calculate the value of k?? thanks for the help

286. ## Working in the science industry

Can any one list the tasks and the precautions and give details of the job of a technician in the science industry. Many thanks. ps thankyou dr bob 222 but there was nothing there in your previous answer, can you help

I don't get how to express the fraction 30/100 in 20ths.

288. ## Philsophy

How the majority can have intransitive preferences without anyone's preferences being intransitive?

289. ## To Ms. Sue

Ms. Sue, I have replied to the previous post.

290. ## Physics

What distance is travelled by a basketball player who accelerates from rest to 5.654x10^0 m/s in 1.567x10^0 seconds, to three significant figures? Can someone please explain how to do the calculations

291. ## Math

Consider the regression through the origin model y = bx Assume that there are n pairs of observations of the response and the explanatory variables, and that these observations are indexed by i. Derive the least-squares estimator for the slope parameter b

where do you add parenteses to get 6+6/6+6*6=6

293. ## math

whats a another division pronlem that equals 38.6

294. ## psychology

What will you take from this material on leadership and management and apply in your own life?

295. ## math

ã10(ã11-ã7) can you help me multiply and simplify

296. ## college

what to do if order-taking system becomes obsolete?

297. ## nutrition

how fo you modify food choices from a regular menu to varios medical conditions like people with low cholesterol? instead of consuming 8 oz of 2% milk what would they consume?

298. ## physics

A longjumper running at 12 m/s and jumps at 20 degrees. No wind or resistance but gravity is normal -9.81 m/s2. How far will person jump?

299. ## pleaese help math

12p^2q|7mn^3|3p^3q^3|21n^4

300. ## english

I need a sentence with the word duke

301. ## English: Vocab

would sarcasm be also considered as ironic?

302. ## science

i have to make a 3D model of th e cytoskeleton of an animal cell and i don't know how to make it can someone please give me some ideas?

303. ## Calculus III

Give an Example where f(x) is greater than or equal to 0 but f(x) is not decreasing and the integral converges while the series diverges or vice versa.

304. ## advanced algebra 2 - math

graph the solution set of the system: y>3x+2, y-2/5x-3 1/5, y>-1

305. ## world civics

provide 2 examples of the devastation diease caused

306. ## health

how do state and local health departments use the healthy people 2010 objective? provide an example.

307. ## Finance(trying to dichper)

How would you read these two formulas? The 1/4 and 1/6 are throwing me off. These are example problems from what I need to do. Variance=1/4[(0.03 – 0.1)2 + (–0.14 – 0.1)2 + (0.27 – 0.1)2 + (0.22 – 0.1)2 + (0.12 – 0.1)2] Geometric average return

308. ## Biology

whats the easiest way to make a model of an animals blood cell?

309. ## math

-3v+3 _______ 6v+5 is to make sense, the values that v can take must be restricted. State the restriction on v

310. ## physics

to find friction force do you use the equation n=mg cos

311. ## math

can you show me the steps to the problem> x+x+52+2(x-4) = 71+1

312. ## Periodic Table

Hello all, how does the periodic table determine the type of bonding of compounds Cheers Charlie.

313. ## coppin

acid base disturbance

314. ## math

A drawer contains 6 socks, 2 red, 2 brown, 1 pink and 1 black. if 4 are randomly chosen without replacement what is the probability that 2 pairs are chosen. Help I am desperate.

315. ## scince

what force if a child is holding a balloon,why?