Questions Asked on
November 11, 2010

  1. calculus I

    a slice of pizza, in the form of a sector of a circle, is to have a perimeter of 24 inches. What should be the radius of the pan to make the slice of pizza largest?

    asked by Jesse
  2. adult education

    what were the underpinnings of the Womankind Addiction Service? Discuss the issues &concerns as they related to those underpinnings. According to the IDM best practices case studies

    asked by RT
  3. Physics

    A liquid (density = 1.65 g/cm^3) flows through two horizontal sections of tubing. In the first section the cross-sectional area is 10.0 cm^2, the flow speed is 275 cm/s, and the pressure is 1.20 x 10^5 Pa. This tubing then rises 50 cm to the second

    asked by Daniel
  4. Nutrition

    How do you calculate a patient's fluid needs? The patient is male, his current weight is 229#. His usual weight is 240#. His ideal weight is 172 #. Kcals needed per day are 3121. I also know that there are 30mL/1kg, but I'm really not sure how this

    asked by Elie
  5. chemistry

    for the complex ion equilibria between AgCl and NH3, why does NH3 replace Cl- and how do we know that we have to add 2 infront of NH3? Is the product a salt compound? Ag + 2NH3= Ag(NH3)2+

    asked by flame
  6. physics

    A projectile is launched from ground level to the top of a cliff which is 195 m away and 135 m high.If the projectile lands on top of the cliff 6.5 s after it is fired, find the initial velocity of the projectile ( (a)magnitude and (b)direction ). Neglect

    asked by bobjahng2
  7. C++

    Write a statement that passes the value 4 to the function below and assign it's return value to the variable result. Thank You. int cube(int num) { return num*num*num; }

    asked by Anon
  8. 7th grade math

    find a ratio equivalent to the ratio 7 over 9 then use the ratio to write a proportion

    asked by chris
  9. Memt 202

    If a rod of 1025 steel 0.5 m (19.7 in) long is heated from 20 to 80 deg C (68 to 176 deg F) while its ends are maintained rigid, determine the type and magnitude of stress that develops. Assume that at 20 deg C the rod is stress free.

    asked by alok
  10. chemistry

    for the complex ion equilibria between AgCl and NH3, why does NH3 replace Cl- and how do we know that we have to add 2 infront of NH3? Is the product a salt compound? Ag + 2NH3= Ag(NH3)2+

    asked by flame
  11. home economics

    what are the different branches of home economics??????

    asked by bhie
  12. Science

    1. How do plants survive? 2. What is photosynthesis? 3. What are needed in the food-making process of plants? 4. What are the parts of the leaf that help in food-making process of plants? 5. How do plants store energy?

    asked by Chelsea
  13. chemistry

    if 0.4M NaOH is titrated with 0.4M HF, how do we calcualte the ph at equivalence. The book assumes each is 1L, but why do we use 1L

    asked by flame
  14. Math

    estimate the sum or difference by rounding the nearest one 9.87 +4.05

    asked by Winston
  15. Chemistry

    The given reaction, 2N2O5 4NO2 + O2, follows first-order kinetics and has an activation energy of 103 kJ mol-1. At 298 K, k = 0.0000354 s-1. What is the half-life (min) for this reaction at 338 K ? Round your answer to 3 significant figures.

    asked by Kyo
  16. Trig

    tan^2t/sect=sect-cost cott^2/csct=csct-sint

    asked by Mike
  17. college organic chemistry

    two substances,a and b have same melting point.How can you determine if they are the same without using any form of spectroscopy? Explain in detail.

    asked by Anonymous
  18. math

    Find two positive numbers whose sum is 50 such that the sum of their squares is minimum?

    asked by Anonymous
  19. math

    All our streets run north-south or east-west, and the shop is 6 blocks east and 8 blocks north.I lost both races.The first tim, i rode directly east for 6 blocks and then directly north for 8 blocks.the next time i tried zig-zagging.both times he was

    asked by bobpursley please help me
  20. physics

    The temperature of 6.80 mol of an ideal monatomic gas is raised 12.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change ΔEint in internal energy of the gas, and (d) the change ΔK in

    asked by san
  21. english

    In story "the necklace" written by "Guy De Mauspassant", if you were caught in a situation like Maltida,how would you have dealt with it

    asked by abhi
  22. Physics

    A rubber ball filled with air has a diameter of 25.0 cm and a mass of 0.540 kg. What force is requiered to hold the ball in equilibrium immediately below the surface of water in a swimming pool? Start equation out by using sumF = ma Answer is 74.9 N I just

    asked by Daniel
  23. physics

    At t = 0, a particle leaves the origin with a velocity of 9 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (-2 i -4 j) m/s2. At t = 1 s, what is the velocity of the particle in the x direction? I need explanation

    asked by meer
  24. Earth Science

    what is the dewpoint temperature of a kilogram of air when a psychrometer measures an 8 degree Celsius dry-bulb temperature and a 6 degree Celsius wet-bulb reading?

    asked by Anon
  25. chemistry

    what is the structure of phenylhexane?

    asked by Anonymous
  26. chemistry

    which of the following would form acidic,basic or neutral solutions:nh4f,nh4cn,nh4ch3coo,nh4cl,ba(ch3coo)2,nacn,caso4,cr(no3)3,fecl3,na2co3

    asked by andrew
  27. Physics

    A 600-kg weather ballon is designed to lift a 4000-kg package. What volume should the ballon have after being inflated with helium at standard temperature and pressure so the total load can be lifted up? The problem asks for volume. Take it a step

    asked by Daniel
  28. Geology

    How many calories would it take to transform 2 grams of ice at -12C to liquid water at 85C? How do u find the answere whats the math...and how do u use the chart?

    asked by Bernadet
  29. College Chemistry 100

    The topic is about acids, bases, and salts. The two equations are given: H20 + HCL -> H30 + CL; H20 + HC2H3O2 H30 + C2H3O2 The question is: A solution with a volume of one liter contains 0.45 mole HC2H3O2 and 0.48 mole C2H3O2 ion. (Ka for HC2H302 is 1.82 x

    asked by Marie
  30. Chemistry

    How many pi bonds and sigma bonds are present in ritalin?

    asked by Ryan
  31. english

    When the monarchy was restored in England, the theaters were almost immediately closed. true?

    asked by danny
  32. english

    what are are the characters names in royally jacked by Niki Burnham

    asked by taylor
  33. COM150

    What do you think the difference is between simply an opinion versus an informed opinion?

    asked by Lady
  34. Chemistry

    How many pi bonds and sigma bonds are present in ritalin I counted for pi bonds and 18 sigma bonds is that correct?

    asked by Ryan
  35. Chemistry

    Draw the Lewis structures for each of the following, determine the shape of the molecules. a. H2S b. CN3- c. CCl4 d.NH4 e.PO4- f.PCL3 f.SF6 and explain how do you determine the shape of it

    asked by Jess
  36. Chemistry

    Draw the Lewis structures for each of the following, determine the shape of the molecules. a. H2S b. CN3- c. CCl4 d.NH4 e.PO4- f.PCL3 f.SF6 and explain how do you determine the shape of it

    asked by Jess
  37. Math

    What is 90% of 110?

    asked by Kate
  38. ALGEBRA

    GRAPH THE EQUATION AND IDENTIFY Y INTERCEPT. y = x + 3; I tried this one can you tell me if I'm correct?? Let x = 0, then y = 3; (0,3) Let y =0, then x = -3 (-3,0) THANK YOU!

    asked by Amy
  39. english

    The slopes of the mountain are covered with trees.

    asked by neshia
  40. precalc

    Find the indicated partial sum of the series. infinity E 3(1/2)^i i=1 third partial sum

    asked by bbbb
  41. trig

    let sin theta = -7/25 with theta in QIV find sec (2theta)

    asked by george
  42. linear equations

    Having trouble with this one. Thank you. Graph the equation and identify the y - intercept. y = 4/3x+2. (0,?) Thank you

    asked by Jessica
  43. english

    Some ancient and medieval works have several qualities present in novels. true?

    asked by danny
  44. english

    When the theaters reopened, the age of Restoration drama began. true?

    asked by danny
  45. Chemistry

    Magnesium nitrate contains chemical bonds that are ? 1. Covalent Only 2. Ionic Only 3. Both Covalent And Ionic 4. Neither Covalent Nor Ionic The answer is 3, but I don't know why. How does NO3 even bond?

    asked by danny123
  46. physics

    A force of 3000 N is applied to a 1500-kg car at rest. (a) what is its acceleration? (b) what will its velocity be 5 s later?

    asked by dominic echols
  47. Accounting

    Apply the Theory of Constraints to a working environment. Explain why organizations don’t have unlimited resources (space, inventory, product line, etc). Explain why there are always limits to what organizations can do.

    asked by Kyndall
  48. Ethics in Accounting

    M.K. Gallant is president of Kranbrack Corporation, a company whose stock is traded on a national exchange. In a meeting with investment analysts at the beginning of the year, Gallant had predicted that the company’s earnings would grow by 20% this year.

    asked by Kyndall
  49. Calculus

    What are the coordinates of the points at which the slope of a function with the equation y=x^4-8x^2 is equal to zero? Please help me to understand how to approach this question.

    asked by Allison
  50. chem

    Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?

    asked by Kristy
  51. Spanish 1

    59. ¿Con ____ vas al cine? a. qué b. quién c. qué estación d. cuál B? 60. No estoy bien. Estoy ______. a. enferma b. ocupada c. deportista d. graciosa A? 61. No quiero ir el fin de semana. Voy a ir ______. a. el sábado b. el martes c. los sábados

    asked by mysterychicken
  52. Physics - Buoyancy

    A scale reads 20.3 N when an object is not submerged in water and 20.0 N when the object is (completely) submerged in water. What is the specific gravity of the object?

    asked by Phil
  53. Physics

    A 12 kg hammer strikes a nail at a velocity of 8.2 m/s and comes to rest in a time interval of 0.0083 s. 1. What is the impulse given to the nail? 2. What is the average force acting on the nail?

    asked by Nick
  54. ANATOMY

    Is the lining of the esophagus either : 1) Simple Squamous? OR 2) Stratified Squamous? -Please help . I know it has to be either 1 or 2.

    asked by Kate
  55. Physics

    why can a submarine hang in water

    asked by Jemma
  56. Spanish 1

    64. -"¿Van Gustavo y Ud. a la playa?" -"Sí, ____." a. voy b. vais c. vamos d. vas C? 65. -"¿Dónde está Rosa?" -"_____." a. A las cinco b. En el parque con Miguel c. Por la tarde d. De Guatemala B? 66. Necesito más lápices. Voy a ir ______. a. a la

    asked by mysterychicken
  57. Finance

    a stock is expected to pay a dividend of $0.50 the end of the yeat and it should continue to grow at a constant rate of 5% a year. If the required return is 14% what is the stock expected price 5 years from today

    asked by Tracy
  58. Finance

    Martell Mining Company's ore reserves are being depleted, so its sales are falling. Also, its pit is getting deeper each year, so its costs are rising. As a result, the company's earnings and dividends are declining at the constant rate of 3% per year. If

    asked by Tracy
  59. applied physics

    an airplane is heading due west at a velocity of 500 miles/hr. There is a cross wind due North at a velocity of 50 miles/hr. find the airplanes velocity relative to the ground (magnitude and direction)

    asked by jennifer
  60. Advance algebra and trigonometry

    2x-y=-6 8x-4y=-24

    asked by Tj
  61. ENGLISH

    An angel, robed in spotless white, Bent down and kissed the sleeping Night. Night woke to blush; the sprite was gone. Men saw the blush and called it Dawn. Paul Laurence Dunbar I have a few questions on this poem which I do not understand and would like if

    asked by Teressa
  62. ENGLISH(Writeacher)

    An angel, robed in spotless white, Bent down and kissed the sleeping Night. Night woke to blush; the sprite was gone. Men saw the blush and called it Dawn. Standing by my bed in gold sandals Dawn that very moment awoke me Moon fades into dawn... an ivory

    asked by Teressa
  63. U.S. Government

    The Farmers called our government a republic instead of a democracy because they wanted to be clear that they were creating a representative constitutional democracy and not a direct democracy. If the Framers were alive today? 1. What do you think they

    asked by Susie
  64. Chemistry

    Draw the Lewis structures for each of the following, determine the shape of the molecules. a. H2S b. CN3- c. CCl4 d.NH4 e.PO4- f.PCL3 f.SF6 and explain how do you determine the shape of it

    asked by Jess
  65. Chem

    A 12.3 vessel was found to contain N2, Ar He, and He. The total pressure in the vessel was 987 torr and the partial pressures of nitrogen, argon, and helium were 44 torr, 486 torr, and 218 torr, respectively. What was the pressure of neon in the vessel?

    asked by Jose
  66. Chemistry

    Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?

    asked by Anne
  67. chemistry

    Consider the following double displacement reactions. For each reaction, complete and balance the equation and give the net ionic equation. NH4Cl(aq)+Ca(NO3)2(aq) -> NH4(NO3)2+CaCl the second half of the equation is what I had done but I think its not

    asked by Riley
  68. physics

    A 120 kg crate on a flatbed truck is moving at 1.5 m/s2 for 65 m. What is the total work done on the crate if it's sitting horizontally at an angle of 0 degrees?

    asked by Alexius
  69. Ethics

    M.K. Gallant is president of Kranbrack Corporation, a company whose stock is traded on a national exchange. In a meeting with investment analysts at the beginning of the year, Gallant had predicted that the company’s earnings would grow by 20% this year.

    asked by Chris M
  70. Thank you Dr.Bob222

    Thank you, you don't know how much you have help me with my chem class...thank you so much..your the best!!

    asked by julia
  71. Chemistry

    Draw the Lewis structures for each of the following, determine the shape of the molecules. a. H2S b. CN3- c. CCl4 d.NH4 e.PO4- f.PCL3 f.SF6 and explain how do you determine the shape of it

    asked by Nick
  72. physics

    You pull upward on a stuffed suitcase with a force of 100 N, and it accelerates upward at 0.816 m/s2. (a) What is the mass of the suitcase?

    asked by Karina
  73. geomtry

    EF is a median of trapezoid ABCD. The length of AB is 12, and the length of CD is 18. What is the length of EF?

    asked by Anonymous
  74. physics

    You pull upward on a stuffed suitcase with a force of 100 N, and it accelerates upward at 0.816 m/s2. (a) What is the mass of the suitcase?

    asked by Karina
  75. physics

    A cowboy at a ranch fills a water trough that is 1.5 meters long, 65 cm wide and 45 cm deep. He uses a hose having a diameter of 2 cm, and the water emerges from the hose at 1.5 m/s. How long does it take the cowboy to fill the trough?

    asked by Bridget
  76. Physics Help!!!

    In one cycle, a heat engine absorbs 5900 J at 360°C and exhausts 520 J. How much work does it do per cycle?

    asked by ashley
  77. Trig

    What expression represents the same value as sin 19(degrees)?

    asked by Rob
  78. college physics

    An ideal gas (volume 1.1m3, pressure 103600 Pa, temperature 400 K) undergoes an isothermal process during which it absorbs 2000 J of heat. How much did the entropy of the system increase?

    asked by Kristy
  79. Spanish 1

    69. -"¿Adónde van Felipe e Isabel?" -"_____." a. Van al parque b. Vas el centro c. Va a la piscina d. Vamos a la clase de español Not sure.. 70. -"Voy contigo." -"______!Genial!" a. ¿Conmigo? b. ¿Con Margarita? c. ¿Con mi amiga? d. !Qué lástima! A?

    asked by mysterychicken
  80. Math: Calculus

    The velocity function is v(t)= t^2-5t+ 4 for a particle moving along a line. The position function s(t) is an antiderivative of the velocity function. Find the displacement, s(6) - s(-3), by the particle during the time interval [-3,6].

    asked by REALLY NEED HELP!!!!
  81. physics

    a 27,000kb freight train starting at 12m/s then speeds up to 45 m/s in 35 seconds. what is the acceleration?

    asked by marc
  82. Chemistry 104

    How many moles of solute are present in 155 mL of 0.30 M NaNO3?

    asked by Brenna
  83. math

    I need help to solve this math problem. -7.4=-3.7+x=

    asked by suzie mata
  84. physics

    I keep geting this question wrong and cant figure out what i am doing wrong. Help please. When you push a 1.75- book resting on a tabletop, it takes 2.23 to start the book sliding. Once it is sliding, however, it takes only 1.45 to keep the book moving

    asked by ju
  85. Physics & Calc

    Derive the stationary target equations: v1 = [(m1-m2)/(m1+m2)]v1 v2 = [(2m1)/(m1 + m2)] v1

    asked by Megan
  86. HIS/135

    How do the benefits outlined in the 1943 G.I. Bill compare with the G.I. Bill today?

    asked by Pam
  87. earth science

    I need to draw a diagram showing delta, oxalate, tributary and meander. I also need to draw a diagram showing water table, zone of saturation, cone of depression, working well, dry well, aquitard, aquifer, spring, perched water

    asked by Ethan
  88. physics

    a 20 kg loudspeaker is suspended 2m below a ceiling by two 3m-long cables that angle outward at equal angles. what is the tension in the cables?

    asked by sam
  89. American History

    What is the similarities and differences between the civil rights and black power movements?

    asked by Liesa
  90. Chemistry 104

    What mass (in grams) of calcium carbonate is needed to react completely with 73 mL of 0.10 M HCl according to 2HCl + CaCO3 --> CaCl2 + H20 + CO2?

    asked by Brenna
  91. physics

    how do you find the initial velocity and final velocity of a ball shot up and off a cliff using only the distance and max height and time

    asked by Melanie
  92. Chemistry 104

    How many milliliters of 0.310 M BaCl2 are needed to react completely with 60.0 mL of 0.140 M NaSO4?

    asked by Brenna
  93. Chemistry 104

    How many grams of BaSO4 will be formed? (continued from pervious question!)

    asked by Brenna
  94. Introduction to vet terminology

    1. Which of the following is not a tissue type? A. Epithelial tissue B. Connective tissue C. Plasma tissue (my answer) D. Nerve tissue 2. Within the body, the _______ cavity houses the lungs. A. thoracic (my answer) B. pneumonic C. pelvic D. cranial 3.

    asked by Cassie
  95. bio

    how does the survival of males after production of young affect the optimal sex ratio? what are the assumptions of this theory? Are there any examples of how by changing the assumptions of this model the predictions will change? Why according to the basic

    asked by Anonymous
  96. bio

    what is the formula for the optimal sex ratio in a hamiltonian population? What are some real organisms that show this adaptation?

    asked by Anonymous
  97. Chemistry 104

    Nitric acid, HNO3, is available commercially at a concentration of 16 M. What volume would you use to prepare 770 mL of a 0.19 M solution?

    asked by Brenna
  98. Cal

    A plane flying horizontally at an altitude of 3 mi and a speed of 480 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest

    asked by Jordan
  99. physics

    How would the use of dark matter affect the earth and universe? Explain possiblities

    asked by calous
  100. English quick ?

    I will form my lesson plan around a public school’s 4th grade class. Is there suppose to be an apostrope in the wod schools

    asked by heather
  101. Global

    The tombstone proclaims that all france lies beneath the guillotine. What revolutionary event does it depict?

    asked by karla
  102. chemistry

    if 0.4M NaOH is titrated with 0.4M HF, how do we calcualte the ph at equivalence. The book assumes each is 1L, but why do we use 1L * chemistry - Dr.Jim, Thursday, November 11, 2010 at 5:31am HF is a weak acid, so you need the dissociation constant. The pH

    asked by flame
  103. statistics

    A small company has 9 female employees and 15 male employees. In how many ways can 8 employees be selected at random for drug testing if exactly 5 of the employees must be males?

    asked by Kasey
  104. Grammar

    In the paragraphs below, look for shifts in verb tense. In each paragraph, cross out these verb shifts and replace them so that there is verb tense consistency. Write in the correct form of the verb above what you have crossed out. 1. I watched the small

    asked by Leslie
  105. ALgebra

    simplify 4z-[23-5(3z-2)]

    asked by mike
  106. Chemistry

    How is the chemical bonding in Na3PO4 both covalent and ionic?

    asked by danny123
  107. Child Care

    1. The interaction between a child's biological makeup and the environmental influences that affect his or her development and behavior is called the A. balanced systems approach B. Ecological systems theory C. body in the classroom analysis D. me/them

    asked by Dragana
  108. 5th grade word problem

    jen,paula, and sarah spent the weekend decorating a neighbors house. They earned $500.00 between them. When it came to dividing the money, paula had worked three times harder than jen and sarah had worked twice as hard as paula. If the money was divided

    asked by tryston
  109. math

    a) how many tens are in 1000? b) how many hundreds are in 6000? c) how many thousands are in 2 000 000?

    asked by katrina
  110. math

    Estimate to the nearest 100 if you have: a) 56 293 b) 6 521 308

    asked by katrina
  111. math

    If 3 men who are yhe same in size need to drink 12 glasses of milk in a certain time, how many glasses of milk will 7 men who are the same size as them need in the same time frame they needed 12 glasses?

    asked by katrina
  112. Chemistry

    Which element requires the least amount of energy to remove the loosely held electron from a gaseous atom in the ground state? a. bromine b. calcium c. sodium d. silver How do you know?

    asked by danny123
  113. US History

    Need help answering these: 5. In their 1994 Contract with America, Republicans pledged to a. renew the "Star Wars" initiative b. end federal welfare spending entirely c. balance the budget d. increase taxes 6. Several of the important decisions of the

    asked by mysterychicken
  114. trigonometry

    exact value of cot[arccos(-2/3)]

    asked by sam
  115. chemistry

    How much iron can be recovered from 25.0 grams of FeO?

    asked by Zach
  116. math

    Put these numbers in order smallest to largest 0.6. 0.06. 0.43. 0.9

    asked by Anonymous
  117. Chemistry

    How many grams of potassium can be obtained from the decompostion of 100 grams of KCl?

    asked by Zach
  118. chemistry

    a 5% acetic acid solution contains -----grams of acetic acid per ------

    asked by tiffany
  119. Chemistry

    calculate the number of formula units of 0.0067 g of lithium carbonate, Li2CO3?

    asked by Zach
  120. reading

    how do you know that the stranger ontinued to care about the baileys after he left the farm?

    asked by kaitlyn
  121. trig

    exact value of cot[arccos(-2/3)]

    asked by sam
  122. English

    How is Scout Finch described in To Kill A Mockingbird? What does she look like and what are some personality traits she has?

    asked by Ceci
  123. Biology

    Where would you find Calcium Carbonate in a Safari environment?

    asked by Ceci
  124. chem

    A 4.91 g sample of aluminum completely reacts with oxygen to form 6.85 g of aluminum oxide. Use this data to calculate the mass percent composition of aluminum in aluminum oxide. i got 61.2% first and it was wrong. then i got 53.0% and it was wrong

    asked by hannah
  125. chem

    I am having trouble coming up with a lab to determine the pka of salicyclic acid! help1

    asked by jmf
  126. Calculus

    A particle moves in a straight line with velocity t^-2 - 1/9 ft/s. Find the total displacement and total distance traveled over the time interval [1,4]. I found out that the total displacement is .4116 But I cannot find the total distance traveled.

    asked by D
  127. Physics

    A man pushes on a piano of mass 180 kg so that it slides at a constant velocity of 12.0 cm/s down a ramp that is inclined at 11.0degrees above the horizontal. No appreciable friction is acting on the piano. Calculate the magnitude and direction of this

    asked by Carmen
  128. physics

    A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein . The inside diameter of the 4.8 cm long needle is 0.48 mm, and the required flow rate is 4.9 cm^3 of blood per minute.

    asked by ashley
  129. math

    what is the formula for calculating a triangular prism's volume?

    asked by raluca
  130. physics

    Blood from an animal is placed in a bottle 2.0 m above a 3.4 cm long needle, of inside diameter 0.35 mm, from which it flows at a rate of 2.9 cm^3/min. What is the viscosity of this blood? Assume Pblood}=1.05 * 10^3 kg/m^3.

    asked by tiffany
  131. chemistry

    ten mols of metallic iron was dissolved in concentrated HCl.what is the balanced chemical equation? a) what is the mass of each product that formed? b) what amount of HCl was used in this reaction? need help in those three questions please......

    asked by tarkan
  132. geometry

    the diagonal of a rectangular room is 52ft long. one wall measures 28ft longer than the ajacent wall. find the dimensions of the room

    asked by badal
  133. Chemistry

    What is the molecular ratio in the following equation:H2O + SO3 = H2SO4

    asked by Beth
  134. EDU310

    What roles do school teachers play in their community? Is it important that teachers are involved in the community.

    asked by Anonymous
  135. Chemistry

    What is the molecular ratio of the following equation? HNO3 + KOH = H2O + KNO3

    asked by Beth
  136. chemistry HMWK help.......

    you decide to have a BBQ in your backyard. you have 1Kg of pentane (C5H12) in the tank. What is the amount of carbon dioxide (in mass and mols) you will be contributing to the greenhouse gas effect by using up that 1Kg of pentane? plz.... need the answer

    asked by tarkan
  137. Chemistry

    how do i find total pairs shared pair and lone pairs after creating the Lewis Structures

    asked by Lola
  138. chemistry HELP......

    what mass of hydrogen will react with 25g of oxygen to produce water?

    asked by tarkan
  139. ALgebra

    simplify (-2x^3)^2 (3x^-2)

    asked by mike
  140. Chemistry

    Would the molecular ratio of the equation 4Na + O2 = 2Na2O be 4:2?

    asked by Beth
  141. chemistry

    nitrogen gas and oxygen gas combines to produce nitrogen dioxide. What amount of oxygen gas is needed to completely react with 3kg of nitrogen gas?

    asked by tarkan
  142. chem

    Silver chloride, often used in silver plating, contains 75.27% Ag. Calculate the mass of silver chloride in grams required to make 4.7 g of silver plating.

    asked by hannah
  143. Chemistry

    Does the aufbau principle apply to radioactive isotopes?

    asked by Beth
  144. chemistry

    what is the [h3o+] in a 9.93 x 10^-6 M Ba(OH)2 solution?

    asked by jj reddick
  145. chemistry HELP

    hydrogen peroxide (H2O2) decomposes into water and oxygen. what amount of hydrogen peroxide is necessary to produce 24g of oxygen.

    asked by tarkan
  146. chemistry

    provide with enough heat, magnesium and oxygen can undergo a synthesis reaction. how much magnesium is neede if 3.5kg of product is desired?

    asked by tarkan
  147. chemistry

    When I am writing a half-reaction with a corroding metal that is in deionized water, what can i assume there to be in the water that can show up in a half-reaction?

    asked by Randy
  148. US History

    12. To which groups did George Wallace target his campaign? a. southerners and blue-collar voters b. Republicans and left-leaning Democrats c. campus radicals and antiwar forces d. professors and editorial writers A? 15. What effect did Supreme Court

    asked by mysterychicken
  149. Art

    What atrists, styles and events did Pierre Auguste Renoir have influences on?

    asked by Jennifer
  150. chemistry

    When I am writing a half-reaction with a corroding metal that is in Deaerated water, what can i assume there to be in the water that can show up in a half-reaction?

    asked by Randy
  151. geometry

    Given: segment DE is perpendicular to segment AB and segment AD is perpindicular to segment BC then Prove that BE times AD equals BD times CE

    asked by justine
  152. Chemistry

    What would be the molecular ratio of the following equation? 2NO2 = 2NO + O2

    asked by Ann
  153. math

    All our streets run north-south or east-west, and the shop is 6 blocks east and 8 blocks north.I lost both races.The first tim, i rode directly east for 6 blocks and then directly north for 8 blocks.the next time i tried zig-zagging.both times he was

    asked by drwls please help me new info.
  154. chemistry HMWK help.......

    ammonia is produced by sythesizing nitrogen and hydrogen gas. if i have 2 mols of nitrogen gas and 5 mols of hydrogen gas, which reagent will run out first?? a) if i have 0.0345 mols of nitrogen gas and 0.0537 mols of hydrogen gas, which reagent will run

    asked by tarkan
  155. PHYSICS !

    If a ball is sliding down a ramp that is on a slant, so that the ball sliding down falls off. Is the speed of the ball constant(meaning staying at the same speed)? or Speeding up? If so, how?

    asked by Kate
  156. chemistry

    A sample of carboxylic acid is added to 50.0 mL of 2.27 M NaOH and the excess NaOH required 28.7 mL of 1.86 M HCl for neutralization. How many moles of NaOH reacted with the carboxylic acid?

    asked by Ali
  157. ALgebra

    simplify (-2x^-4) (8x^-3)

    asked by mike
  158. Chemistry-Please Help!

    I have these 5 chemical equations and I keep getting the same 1:1 ratio on all of them. I must be doing something wrong! KCL + NaNO3 = KNO3 + NaCl HNO3 + KOH = H2O + KNO3 H2O + SO3 = H2SO4 4Na + O2 = 2Na2O 2NO2 = 2NO + O2

    asked by Ann
  159. college

    lacey-leafed, tap rooted plants first grow in windswept highlands of afghanistan. Greeks used as a digestive tonic when they overeaten other foods.Lewis and clark concluded they must have been indigenous to north america.

    asked by Amy
  160. chemistry

    an evil chemist would like to produce 2.4 toones of sulphur dioxide to pollute his city. the chemist know that zinc sulphide and oxygen can react to produce zinc oxide and sulphure dioxide. how much oxygen and zinc will he need to purchase to make his

    asked by tarkan
  161. Physics

    If a cylindrical space station 300m in diameter is to spin about its central axis, at how many revolutions per minute rpm must it turn so that the outermost points have an acceleration equal to g?

    asked by Carmen
  162. To Amanda

    I deleted same lengthy assignment that you've posted three times in the last hour or so. "Posted by Amanda on Thursday, November 11, 2010 at 5:40pm. Continuing Cookie Chronicle (Note: This is a continuation of the Cookie Chronicle from Chapters 1 through

    asked by Ms. Sue
  163. chem

    what is the [h3o+] in a 9.93 x 10^-6 M Ba(OH)2 solution? (this is all that's given)

    asked by jj reddick
  164. Physics

    A tennis player hits a 58.0g tennis ball so that it goes straight up and reaches a maximum height of 6.17m. How much work does gravity do on the ball on the way up? On the way down?

    asked by Carmen
  165. Math

    Rosario noticed that the distance from the pole in the center of the tetherball circle to the painted circle was about six feet.What was the approximate radius of the tetherball circle?

    asked by Daijiana
  166. 8th grade science

    Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.

    asked by Juan
  167. science

    What Mendel called a factor is today called a (n) ____________, which is a part of a (n)__________that contains many factors.

    asked by Antonino
  168. chemistry HMWK help....... REPOST

    you decide to have a BBQ in your backyard. you have 1Kg of pentane (C5H12) in the tank. What is the amount of carbon dioxide (in mass and mols) you will be contributing to the greenhouse gas effect by using up that 1Kg of pentane? plz.... need the answer

    asked by tarkan
  169. PHYSICS

    A bathysphere used for deep sea exploration has a radius of 1.60 m and a mass of 1.20 104 kg. In order to dive, the sphere takes on mass in the form of sea water. Determine the mass the bathysphere must take on so that it can descend at a constant speed of

    asked by A
  170. Spanish 1

    69. -"¿Adónde van Felipe e Isabel?" -"_____." a. Van al parque b. Vas el centro c. Va a la piscina d. Vamos a la clase de español Not sure.. 70. -"Voy contigo." -"______!Genial!" a. ¿Conmigo? b. ¿Con Margarita? c. ¿Con mi amiga? d. !Qué lástima! A?

    asked by mysterychicken
  171. Chem! Please helpppp!!!!!

    Consider the evaporation of methanol at 25.0 c: CH3OH(l)-- CH3OH(g) I figured out that Delta G is 4.3 kJ. Find the Delta G at 25 C under the following conditions: Pressure of CH3OH= 157mmHg, 103mmHg, 14mmHg thanks! please explain

    asked by JP
  172. English

    Can you help me find a word that can go at the end of all 3 beginning words. For example: safe, fire, soda, answer is "cracker". I need help with fire, stone, blank...

    asked by Cindy
  173. ethics

    Examine the issue of monitoring of e-mail and develop a justification or condemnation for this use of the technology using a rules-based (Deontological) ethical theory

    asked by Anonymous
  174. Intermediate Algebra

    If a system has an infinite number of solutions, use set−builder notation to write the solution set. If a system has no solution, state this. y = x + 2, 3y − 2x = 4

    asked by Donna
  175. Biology.. Nutrition (college)

    What root was widely traded were the seeds that Lewis and Clark concluded that they must have been indigenous to North America

    asked by Amy
  176. Intermediate Algebra

    if a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. m - 2n = 16, 4m + n = 1

    asked by Donna
  177. English

    Can you please check if the following sentences are correct? Thank you. 1) The average amount of pocket money is £8. Boys spend it on sweets, fast food, CDs and computer games. 2)Jess comes from Colorado, a country in the south-west of the USA. 3)

    asked by Franco
  178. English

    I forgot to include the following sentences. I hope you can have a look at them too. 1) Mickey is late because he’s got the wrong room number on his timetable. 2)He apologises to Mrs Winter for being late. 3) She tells him not to arrive late again. They

    asked by Franco
  179. physics

    IP You want to nail a 2.4kg- board onto the wall of a barn. To position the board before nailing, you push it against the wall with a horizontal force to keep it from sliding to the ground What happens to the force of static friction if you push against

    asked by mathhelp
  180. arithmetic

    Mr. Mcwilliams drove 76 miles on monday and 43 miles on tuesday what is the total distance.

    asked by miyoko
  181. 2nd grade

    it is greater than 43 less than 52 if you add digits the sum is 8 write the number word

    asked by rose
  182. physics

    Find the acceleration (mls^2) of the masses, given that m1= 1.0kg, m2= 2.0kg and m3= 3.0kg . Assume the table is frictionless and the masses move freely.

    asked by jay
  183. math

    at breakfast buffet, 93 people chose coffee for there beverage and 47 people choe juice. Twenty-five people chose both. Each person chose at least one of these beverages. how many visted the buffet

    asked by alexi
  184. 8th grade

    did anyone read the barcode tattoo by suzanne weyn? if you did, can you help me find 2 hyperboles and the page numbers? the help is greatly appreciated. thank you

    asked by dana
  185. Science

    Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.

    asked by Juan
  186. math

    1. Find the markup cost:$18 percent of markup: 35%

    asked by lilly
  187. physics

    A person bends over, and lifts an object of mass m = 28.5 kg while keeping the back parallel with the floor. The muscle that attaches 2/3 of the way up the spine maintains the position of the back. This muscle is called the back muscle or latissimus dorsi

    asked by rose
  188. Finance

    I need to develop a proposal for a US company, that wants to expand internationally to purchase a consumer electronics’ firm in another country. The country I have chosen is South Korea. I need to include an economic assessment of the country, a risk

    asked by Diane
  189. 8th grade science

    Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.

    asked by Juan
  190. math

    Sentences in which the names of countries are hidden. By joining words or parts of words. Elvira questioned the monthly electric bill. Swollen glands can be very painful. Shout,"Hail" and be recognized.

    asked by Ted
  191. calculus

    if f(x)=4^2x-1, find f(1)+f(2)

    asked by gen
  192. Physics

    Which of the following forces does NOT have a zero work done on the object. Choices The normal force on a box that slides across a horizontal level floor. The weight on a box that slides across a horizontal level floor. The normal force on a box that

    asked by rose
  193. calculus

    1. if f(x)=3^x-3^-x, find :f(2),f(-1) 2. if y1=x^2+3x-1 and y2=x-5, find: a. y1+y2 b. y1-y2 c. y1(y2) please show solution thanks.

    asked by gen
  194. HISTORY

    IS THE US CONGRESS the only democratically elected legislature in the world.

    asked by CARNITA
  195. geometry

    A rectangular box measures exactly 72 cubic feet. What are its possible dimensions? Give 3 answers.

    asked by kathryn
  196. HISTORY

    IS U.S. Congress prohibited from passing laws that might conflict with state laws

    asked by CARNITA
  197. math

    Find the selling price. Cost: $6 percent of markup: 75% would the answer be $4.50 selling price?

    asked by lilly
  198. MATH

    A rectangular prism has a volume of 6,090 cm3, a width of 14 cm, and a length of 15 cm. What is the height of the rectangular prism?

    asked by SHANNON
  199. Accounting

    I have the following items listed on a balance sheet and income statement: Balance Sheet: Cash Accounts Receivable Inventory Prepaid Expenses Equipment Accumulated Deprecation Accounts Payable Income Taxes Payable Dividends Payable Salaries Payable

    asked by Tjo05
  200. math

    one evening, three people play three rounds of a betting game with the undrestanding that the person who comes in last each round must double the money of the other two. After three rounds, each person has been last just once and each has $24. What were

    asked by Anonymous
  201. 8th grade pre-algebra

    how to use a grid and lenghts of line segments to give a geometric argument

    asked by nerdy
  202. biology

    What advantages did using the elodea stalk have over using its leaf or leaves?

    asked by js
  203. Physics

    An 8.74-kg block slides with an initial speed of 1.52 m/s down a ramp inclined at an angle of 27.0° with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.64. Use energy conservation to find the distance the block

    asked by Jo
  204. chemistry

    How many grams of H2(g)can theoretically be produced from a 5-g sample of magnesium metal and excess HC1(aq)?

    asked by Brit
  205. Precalculus

    find x-intercept -0.01x^2+0.7x+6.1

    asked by HaRI
  206. chemistry

    What metals are suitable for use as the cage around the magnesium metal?

    asked by Brit
  207. math

    Find the selling price Cost: $6 percebr of markup: 50%

    asked by lilly
  208. HISTORY

    WHICH WOULD BE THE BEST CHOICE The U.S. Congress is 1 the only democratically elected legislature in the world. 2 prohibited from passing laws that might conflict with state laws. 3 required to reapportion every year. 4 nonpartisan. 5 bicameral. i CAN NOT

    asked by CARNITA
  209. substance

    Whut is an eleven letter word starting with e that means process which alcohol leaves the body, this is for a crossword puzzle?

    asked by sirhulk
  210. science

    how many molecules are in LYCRA and STARCH?

    asked by Anonymous
  211. CHEMISTRY

    WHAT WILL BE THE BALANCE CHEMICAL FORMULA FOR THIS QOUESTION ammonia is produced by sythesizing nitrogen and hydrogen gas. if i have 2 mols of nitrogen gas and 5 mols of hydrogen gas, which reagent will run out first??

    asked by tarkan
  212. 5th grade

    the lengths of two sides of a triangle are 15 inches each and the third side measures 10 inches what kind of triangle is that

    asked by mara
  213. Spanish

    Need help with this-- 'Write the time in sentence form (in spanish) for each of the following: 77. 1:15 78. 2:30 79. 4:45 80. 7:10 Thanks! -MC

    asked by mysterychicken
  214. Literature

    According to charley's psychiatrist, how can charley's visit to the third level be explained

    asked by Ashley
  215. economics

    The participation of women in the U.S. labor force has risen dramatically since 1970. a. How do you think this rise affected GDP? b. Now imagine a measure of well-being that includes time spent working in the home and taking leisure. How would the change

    asked by TC
  216. geometry

    Given quadrilateral ABCD, with A = 4x - 57 and C = x + 3, what value of x ensures that ABCD is a parallelogram?

    asked by josh
  217. Geometry

    1) Find the lengths of the legs of two possible triangles whose areas would be as close as possible to one square inch without going under. 2) What if the triangle has to be an isoceles triangle? (area must be close to one square inch) (Give answers in

    asked by Katie
  218. Econnomics

    The New York Times cost $0.15 in 1970 and $0.75 in 2000. The average wage in manufacturing was $3.23 per hour in 1970 and $14.32 in 2000. a. By what percentage did the price of a newspaper rise? b. By what percentage did the wage rise? c. In each year, how

    asked by TC
  219. math

    mary wants to build a fence around her rectangular garden. it is 10m wide and 15m long. how much fencing does she need to buy

    asked by gill
  220. Chemistry

    Calculate Delta G for the spontaneous cell produced from the following: Al^3+ + 3e^- -> Al (s) Mg^2+ + 2e^- -> Mg (s) In order to solve this, you need to determine the half reactions..ie which is reduced and which is oxidized. How do I know which one is

    asked by Mike
  221. Accounting

    Complete exercises 2-1 and 2-2 on pp. 95-98 of Computer Accounting with Peachtree Complete® 2010 using Peachtree.

    asked by James
  222. Romeo and Juliet

    How long was Romeo and Juliet married be4 the prince exiled Romeo?

    asked by Angel
  223. calculus

    find x intercept; y=-0.01x^2+0.7x+6.1

    asked by SaM
  224. calculus

    if y1=x^2+3x-1 and y2=x-5, find: a. y1+y2 b. y1-y2 c. y1(y2)

    asked by gen
  225. To TC

    Please do not post any more economics assignments until you've answered my queries about your two previous posts.

    asked by Ms. Sue
  226. Science

    Which one is correct about Wien’s law for blackbody radiation? It gives the relationship between the maximum wavelength and intensity the temperature and intensity the range of wavelength and frequency the wavelength for its maximum intensity and

    asked by Stormy
  227. Science

    Since industrial revolution, what is the increased atmospheric CO2 of the US? 10% 30% 50% 90%

    asked by Stormy
  228. MAT 116

    PLEASE HELP ME SOLVE 8(3X5)-6(9/3) I got this far 8(15)-6(3) then I got lost

    asked by TRACY
  229. Chemistry

    Thioacetoamide decomposes in hot water to produce hydrogen sulfide, which is the active reactant in the first step of this reaction. write balanced equation of thioacetoamide in water. Does what I have below make sense? C2H5NS + H2O ----> H2S + C2H3NO

    asked by Anonymous
  230. algebra

    4y - 10 + y + 51 = 6y + 50 - 4y Please help me. thanks!

    asked by thawk46845
  231. Science(very easy)

    What are 2 examples of natural chemical changes?

    asked by Daykrina
  232. Physics

    To make a bounce pass, a player throws a 0.60-kg basketball toward the floor. The ball hits the floor with a speed of 5.5 m/s at an angle of 59° from the vertical. If the ball rebounds with the same speed and angle, what was the impulse delivered to it by

    asked by Evab
  233. electrical

    penn foster exam 00603300

    asked by james
  234. chemistry

    For each of the following acid-base reactions, calculate how many grams of each acid are necessary to completely react with and neutralize 2.1g of the base. 1) HCl(aq)+NaOH(aq)-->H2O(l)+NaCl(aq) 2) 2HNO3(aq)+Ca(OH)2(aq)-->2H20(l)+Ca(NO3)2(aq) 3)

    asked by rachel
  235. mat 116

    8(3*5)+6(9/3)=? took 8(3x5=15) +6(9/3=3) 8(15)+6(3)= took 8(15)+6(3)= 8x(15)+6x(3)= 120+18=138 answer is this answer correct??

    asked by TRACY
  236. algebra

    Please help! 7/3x + 1/3x = 4x + 48/3 + 8/3x Thanks so much for your help!

    asked by thawk46845
  237. CPa

    A company makes an investment of $150,000 with a useful life of 10 years and expects to use this investment to generate $300,000 in sales with $280,000 in incremental operating costs. If the company operates in an environment with a 30% tax rate, what are

    asked by Anonymous
  238. 5th grade

    if 5/17 of region is shaded what part is not?

    asked by d
  239. physics

    a boy is pulling on a wagon with a force of 70 N directed at an angle of 30 degrees to the horizontal. What force is the wagon being pulled horizontally?

    asked by Anonymous
  240. English

    Complete the sentence by writing the correct form of the word in parentheses. You may not need to change the form that is given. 1. She made her fortune in the ____ market before she became a full-time philanthropist. (security) Would the correct answer be

    asked by Anon
  241. physics

    A pendulum that consists of a 2kg mass swings a maximum vertical displacement of 10 cm above its rest position. At its lowest point, the KE of the mass is equal to F. 0.196 J G. 1.96 J H. 19.6 J J. 196 J K. 1960 J

    asked by max
  242. 9th grade

    How long was Romeo and Juliet married before the prince exiled Romeo?

    asked by Angel
  243. algebra

    8(5x-2)=84 Please help. Thank you!

    asked by thawk46845
  244. 3rd grade

    What two numbers have the sum of 16 and the difference of 6?

    asked by Lynika
  245. phys

    The space shuttle, with an initial mass M = 2.41E+6 kg, is launched from the surface of the earth with an initial net acceleration a = 26.1 m/s2. The rate of fuel consumption is R = 6.90E+3 kg/s. The shuttle reaches outer space with a velocity of vo = 4632

    asked by leon
  246. 4th grade

    explain how you could show five less than a number using and expression?

    asked by anais
  247. HISTORY

    What was J. Dennis Hastert's style as Speaker

    asked by CARNITA
  248. HISTORY

    Who has the true leader of the Senate by virtue of having the most power and influence in the chamber

    asked by CARNITA
  249. chemistry

    A scientist wants to make a solution of tribasic sodium phosphate, Na_3PO_4, for a laboratory experiment. How many grams of Na_3PO_4 will be needed to produce 550 mL of a solution that has a concentration of Na^+ ions of 0.500 it M?

    asked by Anonymous
  250. Math

    what is the volume of a sphere that has the same diameter and height of a cylinder that is 24 cubic feet in volume?

    asked by Nika
  251. English

    How do these develop theme of these allusions from Hamlet? 1. "I would have such a fellow whipped for o'erdoing Termagant" (II,ii,14) So basically Hamlet is telling his actors not over act during the play. 2. “For O, For O, the hobbyhorse is forgot”

    asked by Joey
  252. mat116

    -3/7x = 6/35 Badly need your help. Appreciate it greatly.

    asked by cindy
  253. math

    Karen's age is 7 years more than 9 times the age of her niece Emma.If the sum of their ages is 57,what is Emma's age?Make and solve an equation.

    asked by Affy
  254. history

    Which of the following accurately characterizes a difference in the way the House and Senate operate? (Points : 1) The House is more formal than the Senate. The Senate leadership is more powerful than the House leadership. 1 Authority in the Senate is

    asked by CARNITA
  255. Math

    How many cubic units are in the volume of a cylinder whose height is four units and whose radius is five units? What is the surface area of a cube whose volume is 27 cubic inches?

    asked by Nika
  256. Grammar

    What is subject and predicate in the following sentences: The smell of cooking is delicious to the hungry campers. A good fire is difficult to build. Everybody helps to pitch a tent.

    asked by Hayden
  257. Math

    what is the volume of a sphere that has the same diameter and height of a cylinder that is 24 cubic feet in volume?

    asked by Nika
  258. 5th grade

    what is 1/5 of 10

    asked by mj
  259. IT/215 payroll program part 3

    not understanding how to place a constructor within the program.

    asked by Marilynn
  260. 6th grade

    the sum of two decimals numbers is 3.9. Their diffrence is 0.9, and their product is 3.9. What are the two numbers

    asked by Anonymous
  261. history

    The Senate has the sole power to a. declare war. b.approve major presidential appointments. c.regulate the District of Columbia. d.issue patents and copyrights. e. establish post offices and post roads. I think it is b.

    asked by CARNITA
  262. Math

    wheel of thorium? what is it?

    asked by Evan
  263. Physics

    *62. A 40.0-kg boy, riding a 2.50-kg skateboard at a velocity of +5.30 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with the board, the boy's velocity relative to the sidewalk is 6.00 m/s, 9.50° above the

    asked by Cornelius
  264. Algebra

    Tara and Jade are hiking up a hill. Each has a different stride. The run for Tara's stride is 32 inches, and the rise is 8 inches. The run for Jade's stride is 36 inches. What is the rise of Jade's stride?

    asked by Loren
  265. Physics

    *62. A 40.0-kg boy, riding a 2.50-kg skateboard at a velocity of +5.30 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with the board, the boy's velocity relative to the sidewalk is 6.00 m/s, 9.50° above the

    asked by Cornelius
  266. Related rates

    Two people start from the same point. One walks east at 1 mi/h and the other walks northeast at 2 mi/h. How fast is the distance between the people changing after 15 minutes?

    asked by Michael
  267. English

    what was the world war 1 war on the homefront in canada like?

    asked by Rebecca
  268. math

    Use the method of differences to prove the following formulas 1) ∑_(r=1)^n▒〖r=(n(n+1))/2〗 2) ∑_(r=1)^n▒〖r^2=(n(n+1)(2n+1))/6〗

    asked by Wayne
  269. math

    837 divided by f = 31

    asked by tara
  270. math

    Regular price: $8.49 percent ot discount 5%

    asked by lilly
  271. Englis

    Please give feedback on the following essay which is supposed to say if I agree or disagree that the pure in heart need no lawyers... Brandi Lubrano Torti English Period 2 2 November 2010 The Pure in Heart In Act III of the Crucible, Danforth states,

    asked by M
  272. Grammar

    What about A good fire is difficult to build Simple Subject:fire Simple predicate: is difficult to build.? Would the simple predicate be build or is?

    asked by Hayden
  273. Western civilization

    Describe and Explain Mussolini's rise to power.

    asked by Joe
  274. Algebra

    a ladder is leaned against a building. the bottom of the ladder is 9 feet from the building the top of the ladder is 16 feet above the ground. draw a diagram to represent the situation. what is the slope of the ladder?

    asked by Loren
  275. 9th grade

    how do i use the distributive property???

    asked by Thomas
  276. SCIENCE

    Is a forest fire a natural chemical change? Please help me find some other natural chemical changes. Thank you!

    asked by Pratigya
  277. Math

    Find the linear-to-linear function whose graph passes through the points (1,1), (5,2) and (20,3). What is its horizontal asymptote?

    asked by Mia
  278. Linearization

    Find the linear approximation of the function f(x) = √16-x at a = 0

    asked by Michael
  279. organic chemistry

    what is mechanism for triphenylmethanol with hydroiodic acid and sodium bisulfite.

    asked by jayesh----------------
  280. chemistry 2

    What is the molality of a solution that has 80 grams of Benzoic Acid dissolved in 400 mL of ethanol. The density of ethanol is .789 grams/moles

    asked by MICHELLE
  281. math

    A recipe calls for 6 1/2 cups of flour. You have 4 3/4 cupa. How much more flour do you need?

    asked by lilly
  282. literary

    What is the literary term which means, "the point where the author catches our attention?"

    asked by Olivia
  283. Algebra -math

    Tara has saved 18% of her paycheck. She saved $133.00. How much was her total paycheck?

    asked by Kathy
  284. SCIENCE

    Is decomposition a natural chemical change? Is photosynthesis a natural chemical change? thanks!

    asked by Pratigya
  285. Physics

    A copper wire is 7.00 m long and has a cross-sectional area of 1.00 10-4 m2. This wire forms a one turn loop in the shape of a square and is then connected to a battery that applies a potential difference of 0.200 V. If the loop is placed in a uniform

    asked by Max
  286. Managerial Accounting

    M.K. Gallant is president of Kranbrack Corporation, a company whose stock is traded on a national exchange. In a meeting with investment analysts at the beginning of the year, Gallant had predicted that the company’s earnings would grow by 20% this year.

    asked by raja
  287. science

    You need 5.00 grams of AgNO3. You have a 1.25 molar solution. What volume of that solution contains 5.00 grams?

    asked by MICHELLE
  288. Chemistry

    How many pi bonds and sigma bonds are in ritalin molecule? I counted 4 pi bonds and 18 sigma bonds is that correct? I know double bonds are pi bonds and single bonds are pi bonds

    asked by Kristy
  289. algebra

    a) Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each. b) Find R(5), R(10), and R(20). c) Use the bar graph to determine the price that will give the maximum total revenue.

    asked by Anonymous
  290. anatomy

    what is the vein in the dura matter parallel to the longitudinal fissure?

    asked by Lynn
  291. science

    suppose you had two samples of the same radioactive isotope. one sample had a mass of 25 grams. the other had a mass of 50 grams. would the same number of particles be ejected from each sample in the first hour? explain

    asked by hannah
  292. Islamic history

    How was Islam directly tied to the beginnings of monotheism? Who was Ishmael, and how was he described in the Bible and the Koran? Mohammed was arguing over more than the belief in one God. Why were the Arab leaders threatened by his ideas? What were his

    asked by Will M
  293. Math, Please help :/

    Kyle had 36 books in his locker. Some were library books, some were textbooks, and the rest were telephone books. The number of library books and telephone books combined equals 3 times the number of library books.How many of each type of book were in

    asked by Amanda
  294. Linearization 2

    ind the linearization L(x) of the function at a = -1. f(x) = x^4 + 6x^2

    asked by Michael
  295. physics

    a pair of glasses is dropped from the top of a 36.0 m high stadium. a pen is dropped from the same position 2.21 seconds later. how high above the ground is the pend when the glasses hit the ground? (disregard air resistence. a=-g=-9.81 meters per second

    asked by PHYSICS HELP
  296. physics

    once a 21 kg crate is in motion on a hoizontal floor, a horizontal force of 58 N keeps the crate moving with a constant velocity. the acceleration of gravity is 9.81 m/s^2. what is mu k , the coefficient of kinetic friction, between the crate and the

    asked by autumn
  297. physics

    A car at the Indianapolis 500 accelerates uniformly from the pit area, going from rest to 260 km/h in a semicircular arc with a radius of 210 m. Determine the tangential and radial acceleration of the car when it is halfway through the turn, assuming

    asked by Eden
  298. US History

    I still don't know about these and I realllyy need to finish this exam, so please help me!! 15. What effect did Supreme Court decisions on apportionment bring about? a. People accused of a crime must be informed on their rights b. Low-cost health insurance

    asked by mysterychicken
  299. college chemistry

    Comparing the boiling points of: A) C3H8 B) C5H12 C) C2H5OH and identify the folowing statements as either True or False: Dispersion forces only for (A) Boiling point (C) > Boiling point (A) (B) exhibits hydrogen bonding Boiling point (C) < Boiling point

    asked by Stefanie
  300. chemistry

    a 30. L sample of gas exerts 200. mm Hg pressure at 10 degrees C. What volume does the gas have at 300. mm Hg and 25 degrees C?

    asked by kaitlin
  301. math 050

    There are 12 girls and 9 boys in the class. What is the ratio of girls to boys? Be sure the ratio is in simplified form.

    asked by Anonymous
  302. math

    Loretta bought a new computer for $1849 a new printer for $159 and a new software for $289 incudeing tax. She plans to make equal payments of 10% of the total amount. What is a resonable amount for each payment? A. $20 B.$23 C.$23 D.$2100

    asked by lilly
  303. math 050

    Apples cost $4 for 5lbs. How much will 40 lbs.of apples cost? (Set up a proportion and solve it)

    asked by Anonymous
  304. math

    A car travels 84 mi on 3 gal of gas how would I do this?

    asked by lilly
  305. probability and statistics

    Chapter 9: 17. Do students at various universities differ in how sociable they are? Twenty-five Students were randomly selected from each of three universities in a region and Were asked to report on the amount of time they spent socializing each day with

    asked by Dianne
  306. Calculus

    Evaluate. The integral of (e^5x)(sin6x)dx

    asked by Adam
  307. Calculus

    First make a substitution and then use integration by parts to evaluate. The integral of (x^9)(cos(x^5))dx What do you substitute first? I do not understand what they are asking for. Please help. thanks!

    asked by Adam
  308. CALC

    Evaluate The integral from 0 to 5 of (t)(e^-t)dt. I got -5e^-5+-e^-5, but this is incorrect.

    asked by Adam
  309. math 050

    If there are 435 U.S. Representatives, how many votes are required for a simple majority (over 1/2)?

    asked by Anonymous
  310. chemistry

    Reactants for the following reaction are placed in a 10.0 L flask held at 250 degrees C and at initial partial pressures of 1.00 atm each. Calculate the final pressures of each reactant and product, assuming the reaction goes to completion. 4 N2O(g) +

    asked by Kyle
  311. math 050

    Jim has two boards, each with a length of 51/4 inches. If he lays them end to end, what will the total length be?

    asked by Anonymous
  312. math 050

    Solve and check 2/3=x/42

    asked by Anonymous
  313. math 050

    There are 3 pizzas, cut into 10 peices each. The total cost of the pizzas was $25, and dorm A contributed $10 towards the pizza. How many peices of pizza should dorm A receive?

    asked by Anonymous
  314. math

    Write a proportiom to describe the situation the solve. Three cans of dogs food sell for 99 cents. Fine the cost of 15 cnas

    asked by lilly
  315. math

    The sale price of a coat is 40% off it's regualr price of $59.50. Which equation can be used to find s, the sale price of the coat? A. S= 59.50 - 59.50(0.40) B. S = 59.50 + 59.50(0.40) C. S= 59.50 - 59 50(0.60) D. S=59.50 + 59.50(0.60)

    asked by lilly
  316. English

    1.We have planted several new varieties of day lilies along the fence. 2.Soon, my shoes were full of sand. 3.For a beginner, he plays well. 4.She jogs around the reservoir every morning. 5.With great courage, Rosa Parks disobeyed the bus driver. Identify

    asked by Janice
  317. science

    A boulder weghighs 10,000 grams and rolling at a rate of 2 m/s, has a momentum of

    asked by dandre
  318. Physics

    a skateboarder moving at v = 4.8 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is h = 0.54 m above the ground. When she leaves the track, she follows the characteristic path of projectile

    asked by Brian