Questions Asked on
November 28, 2010

  1. 3rd grade math

    Marlon has 4 cards, Jake has 4 cards, and Sam has 3 cards. Can you write a multiplication sentence to find how many cards they have in all? Explain

    asked by alejandra
  2. chemistry

    An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz . What is the value of for the level in which the electron originated? Please show each step and the equation.

    asked by lorah hilpolep
  3. algebra

    A plane that carries mail makes a round trip each day from Chicago to New York. It makes 3 intermediate stops on the way to New York and 1 intermediate stop on the way back to Chicago. Suppose you make a graph of the altitude of the plane for one day, with

    asked by kara
  4. chemistry

    a hydrated salt is a solid that includes water molecules within its crystal structure. a student heated a 9.10-gram sample of a hydrated salt to a constant mass of 5.41 grams. what percent by mass of water did the salt contain?

    asked by Hank
  5. Chemistry

    1. State specifically how you would make a conclusive test for an iron (III) salt. 2. Which test for iron (II) ions is conclusive. 3. Suppose you have a solution containing both an iron (II) salt and an iron (III) salt. How would you proceed to identify

    asked by Justin
  6. physics help please

    a horizontal force of 8.0 newtons is used to pull a 20.-newton wooden box moving toward the right along a horizantal, wood surface, as shown. A. Determine the mass of the box. B. calculate the magnitude of the acceleration of the box.[Show all work,

    asked by mike
  7. Math

    Steven has 9 gold coins that are identical in appearance. However, one coin is counterfeit an weighs slightly less that the others. Using a balance scale, how can he find the counterfeit coin in just two weighings?

    asked by Alejandro
  8. Chemistry

    1. State specifically how you would make a conclusive test for an iron (III) salt. 2. Which test for iron (II) ions is conclusive. 3. Suppose you have a solution containing both an iron (II) salt and an iron (III) salt. How would you proceed to identify

    asked by Justin
  9. chemisty

    does NF3 follow the octet rule

    asked by olivia
  10. Algebra

    find the unit rate for number of parts manufactured per hour if 1630 parts are made in 6 hours. round to the nearest integer. SHOW ALL WORK.

    asked by Amber
  11. Math

    Alfonso got an 87.5% on his test. He got 21 right. How many questions were on the test??

    asked by Laura
  12. physics

    A record player is spinning at 32 rpm when the motor is switched off. After 6.8 seconds the angular speed has decreased to 20 rpm. Calculate the frictional torque if the record player can be treated as a solid wheel of mass 2.4 kg and radius 15 cm. A)

    asked by emily
  13. chemistry

    An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz. What is the value of n for the level in which the electron originated?

    asked by lorah hilpolep
  14. chemistry

    Calculate the energy of a photon of electromagnetic radiation at each of the following frequencies. (A) 103.1 MHz (typical frequency for FM radio broadcasting) (B) 1015 kHz (typical frequency for AM radio broadcasting) (assume four significant figures)

    asked by lorah hilpolep
  15. philosophy

    "Happiness belongs to the self-sufficient." - Aristotle What does it mean? I don't get it...

    asked by Jessica
  16. Trig

    assume a pulley has a radius of 12.96 cm. If it takes 18 seconds for 56 cm of belt to go around the pulley, find the angular velocity in radians per seconds

    asked by SK
  17. Chemistry

    the formula H2O2 is an example of 1.molecular formula 2. an empirical formula 3.an ionic formula 4.an organic formula

    asked by tia
  18. math

    Results of a survey of fifty students indicate that 30 like red jelly beans, 29 like green jelly beans, and 17 like both red and green jelly beans. How many of the students surveyed like no green jelly beans?

    asked by Anonymous
  19. English

    I need your help to paraphrase the description of the Merchant in Chaucer's Prologue to the Canterbury Tales. I'll include the description at the end. Thank you . 1)The merchant had a forking beard and wore a motley (I need a symonym: multicoloured) dress,

    asked by Franco
  20. math

    Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey. Results of the survey indicate that 8 students own a cat, 15 students own a dog, and 5 students own both a cat and a dog. How many of the students surveyed own no cats?

    asked by eric
  21. chemistry

    Which of the following equations does not represent an oxidation-reduction reaction? 3Al + 6HCl → 3H2 + AlCl3 2NaCl + Pb(NO3)2 → PbCl2 + 2NaNO3 2H2O → 2H2 + O2 2NaI + Br2 → 2NaBr + I2 Cu(NO3)2 + Zn → Zn(NO3)2 + Cu

    asked by Anonymous
  22. math 12

    A committee of students and teachers is being formed to study the issue of student parking privileges. Fifteen staff members and 18 students have expressed an interest in serving on the committee. In how many different ways could a five-person committee be

    asked by kitkat
  23. vaporization lab

    A graduated cylinder containing some air is immersed in water. The height between the the water surface and the top of the water inside the graduated cylinder is 106mm. Calculate the correction that must be added to the barometric pressure to find the

    asked by mmeas
  24. Chemistry

    In a solution of copper(II) chloride, the following equilibrium exists: CuCl42-(aq) (dark green) + 4H2O(l) Cu(H2O)42+(aq)(blue) +4 Cl-(aq) Predict the shift in the equilibrium and draw a graph of concentration versus time for relevant reactants to

    asked by Mary
  25. Trig

    A ship leaves its homeport and sails on a bearing of N28degrees10'E. Another ship leaves the same port at the same time and sails on a bearing of S61degrees50'E. If the first ship sails at 24.0 mph and second sails at 28mph, find the distance between the

    asked by SK
  26. Chemistry

    One proposed design for a Mars rover uses a methane gas fuel cell as its power supply. The methane fuel can be made on Mars using a chemical reaction that has been known for over 100-a the Sabatier methanation reaction: C02(g) + 4H2(g) CH4(g) +2H2O(g)

    asked by Mary
  27. Confidentiality in Allied Health

    Use Opinion 5.07 and information from other research you conduct to find answers to the following questions. Explain each of your answers. 1. Should corrections be date and time stamped? 2. When should a patient be advised of the existence of computerized

    asked by Huggins
  28. chem

    Complete and balance each of the following equations. If no reaction occurs, please enter NR in each answer box. (Type your answer using the format CO2 for CO2. Do not leave any box blank. Use the lowest possible coefficients.) ____Al4C3(s) + ___H2O

    asked by rebekah
  29. chemistry

    A 0.20 M sodium chlorobenzoate (NaC7H4ClO2) solution has a pH of 8.65. Calculate the pH of a 0.19 M chlorobenzoic acid (HC7H4ClO2) solution.

    asked by justin
  30. chemistry

    The heat of vaporization of liquid water at 373 K is 40.7 kJ/mol. The value of the enthalpy change when 2.00 g of steam condenses at 373 K is?

    asked by Anonymous
  31. chemistry

    How does electron configuration of ions derived from representative elements give them stability?

    asked by silly
  32. chemistry

    what is the cation and anion of Na3PO4? thanks

    asked by rebekah
  33. Physics

    A beaker of mass 1.2 kg containing 2.1 kg of water rests on a scale. A 2.2 kg block of aluminum (of density 2700 kg/m3) suspended from a spring scale is submerged in the water. Find the reading of the upper scale (the spring scale). The acceleration of

    asked by Sara
  34. physics

    Suppose you roll a bowling ball at 2.5 m/s across the roof of a flat building. It leaves the edge and strikes the ground 2.0 s later. How high is the roof? How far from the edge of the roof does the ball hit the ground?

    asked by Katie
  35. Physics

    Two masses are suspended from a pulley as shown in the figure . The pulley itself has a mass of 0.30 kg, a radius of 0.20 m, and a constant torque of 0.30 m \cdot N due to the friction between the rotating pulley and its axle. What is the magnitude of the

    asked by Garry
  36. Chem

    Calculate the percent yield of eugenol obtained considering the fact that clove oil is approximately 16-19 % clove by weight of cloves. isolated eugenol=061g purity of eugenol in clove oil=99.6% (based on clove oil gas chromatograph) Estimate the % yeild

    asked by Jason
  37. Physics

    a sled mass 50 kg is pulled along snow-covered, flat group. the static friction coefficent is 0.30, and the sliding friction coefficient is .10. what force is need to get the sled moving? then, what force is needed to keep the sled moving at a constant

    asked by Alex
  38. Physics

    Two dogs are pulling on opposite ends of a bone. One dog pulls to the right with a force of 50 N while the other pulls to the left with a force of 40 N. Are the forces on the bone balanced or unbalanced? How do you know? What is the net force on the bone?

    asked by Jasper
  39. history

    How did the Knights of Labor and the AFL differ from earlier unions?

    asked by Tesha
  40. chem

    what is the gram formula mass of Li2SO4 ?

    asked by Heather
  41. chem

    the total pressure of n2o4 and no2 IS 1.38 atm. if kp is 6.75(25 C) calculate partial pressure of NO2 in the mixture. 2NO2 n2o4

    asked by anon
  42. physics help me please

    A 1220 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1990 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the

    asked by student
  43. Chemistry

    How many grams of Ni(OH)2 are produced from the reaction of 45.0mL of 1.75 M NaOH solution?

    asked by Garrett
  44. chemistry help

    this isnt exactly a chemistry question, but i am doing chemistry homework with my calculator. and i want to know if someone can tell me how can i cube something with this calculator? TI-30X IIS? i wanted to post a pic but i cant post sites. i have this

    asked by jessie
  45. chemistry

    Really need help on figuring out the formula for Iron Complex. The question was: 4.0 g of ferrous ammonium sulphate, FeS04(NH4)2*SO4*6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. I got the moles of ferrous

    asked by Nika
  46. physics

    A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/min. When switched off, it rotates through 54.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge in rad/s^2.

    asked by angie
  47. Math

    An object is dropped from a hot-air balloon 1296 feet above the ground. The height of the object is given by h=-16(t-9)(t+9) where the height h is measured in feet, and the time t is measured in seconds. After how many seconds will the object hit the

    asked by Jay
  48. chemistry

    a graph of melting point against relative atomic mass for the alkali metals on the same graph, a plot of the boiling points with a sentence to describe the information the graph gives

    asked by ad
  49. sociology

    You are asked to come up with a plan to improve racial and ethnic relations in your community. What would your plan include? How would you address both individual and institutional discrimination in your plan? Explain.

    asked by lakesha
  50. chemistry

    How much heat is gained (in Joules) by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 14 C?

    asked by Anonymous
  51. geo

    Describe the topography of the interior plains as you would see it if you were driving across the region from west to east to the Trans-Canada highway.

    asked by john
  52. chemistry

    A healthy adult exhales about 5.0*10 exponent 2 ml, of a gaseous mixture with each breath. calculate the number of molecules present in this volume at 37C and 1.1atm.

    asked by silly
  53. 12th Grade Calculus

    1. a.) Find an equation for the line perpendicular to the tangent curve y=x^3 - 9x + 5 at the point (3,5) [* for a. the answer that I obtained was y-5 = -1/18 (x-3) ] b.) What is the smallest slope on the curve? At what point on the curve does the curve

    asked by Eliza
  54. Confidentiality in Allied Health Essay

    Can anyone help me find other resources to the graded project for Penn Foster? I have the AMA, and the Peen foster books. Anything else would be great.

    asked by Shannon
  55. chemistry

    What mass of KOH is necessary to prepare 799.9 mL of a solution having a pH = 11.68?

    asked by justin
  56. phy 210

    List advantages and disadvantages of various research methods

    asked by terry johnson
  57. Physics

    Refrigerator Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which

    asked by BG
  58. math

    A battalion 20 miles long advances 20 miles. During this time, a messenger on a horse travels from the rear of the battalion to the front and immediately turns around, ending up precisely at the rear of the battalion upon the completion of the 20-mile

    asked by Suzy
  59. Trig

    A plane flies 1.3 hr at 100mph on a bearing of N40degreesE. It then turns and flies 1.5hr at the same speed on a bearing of S50degreesE. How far is the plane from its starting point?

    asked by SK
  60. accounting

    John's specialty store uses a perpetual inveentory system. the following are some inventory transaction for the month of may 2009. John's purchased merchandise on account for $5,000. FREIGHT CHARGE OF $300 WERE PAID IN CASH. JOHN'S RETURNED SOME OF THE

    asked by Marty
  61. chemistry

    If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?

    asked by smith
  62. chemistry

    For the weak acid HX, what is the pH of a 0.10 M solution if the acid is 4.0% ionized?

    asked by cs
  63. Math - derivative of sinusoidal (check + help)

    h(t) 0.6cos(2t) + 08 sin(t) h'(t) = v(t) = -1.2sin(2t) + 0.8cos(t) find the vertical displacement when the velocity is 0.8m/s how do i solve v(t) = 0.8m/s I tried the normal way by equating and factoring, however two answers are obtained and the second

    asked by Farah
  64. algebra

    $7.80/hour = ______ cents/minute?

    asked by alexis
  65. algebra

    $7.80/hour = ______ cents/minute?

    asked by alexis
  66. chemistry

    3.49g of ammonia at STP weighs 4.48litre calculate molecular mass of it.

    asked by Anonymous
  67. Chemistry

    How many milliliters of 0.710 M HCl are required to react with 47.80 grams of CaCO3 ? Given the balanced reaction equation: 6 FeCl2(aq) + K2Cr2O7(aq) + 14 HCl(aq) 6 FeCl3(aq) + 2 CrCl3(aq) + 2 KCl(aq) + 7 H2O(l) How many moles of FeCl2(aq) are required to

    asked by Lena
  68. Statistics

    A Swedish study used 1360 patients who had suffered a stroke. The study randomly assigned 684 patients to receive a placebo treatment and the rest to receive an aspirin treatment. Out of those who received the placebo treatment, 28 died due to heart attack

    asked by Katerina
  69. Math

    The path of a cliff diver as he dives into a lake is given by the equation y= -(x-10)^2+75, where y meters is the divers height above the water and x meters is the horizontal distance travelled by the diver. What is the maximum hight the diver is above

    asked by Andy
  70. Math

    A kickball is kicked upward with an initial vertical velocity of 3.2 meters per second. The height of the ball is given by h=-9.8t^2 + 3.2t where the height h is measured in feet, and the time t is measured in seconds. After how many seconds does the ball

    asked by Jay
  71. 6th grade math

    if Mary buys oranges at 5 for 2 cents and sell them at 4 for 3 cents how many must she buy and sell to make a profit of 420 cents?

    asked by marisol
  72. Essay help :)

    Here is my essay: All About The Greek Wars War is a devastating human activity, one that hurts populations, destroys property, and destroys political and social structures for places where humans live. The history of mankind has been a history of warfare

    asked by Allyson
  73. 10th grade

    What is the role of the state governments under the articles of confederation?

    asked by kip
  74. physics

    A projectile is launched straight upwards at 45 m/s. Three seconds later, its velocity is A. 75 m/s B. 30 m/s C. 15 m/s D. zero

    asked by Tracey
  75. math 12

    From a deck of 52 cards, how many different four-card hands could be dealt which include one card from each suit?

    asked by kitkat
  76. chemistry

    Ni+4CO=NI(CO)4 this reaction separates nickel from other solid impurities.Starting with 86.4g NI,calculte the pressure of NI(CO)4 in a container of volume 4.00L

    asked by silly
  77. chemistry

    You have 100.7 g of saccharin, a sugar substitute, and you want to prepare a pH = 5.80 solution. What volume of solution can be prepared? For saccharin (HC7H4NSO3), pKa = 11.70 (pKa = −log Ka).

    asked by justin
  78. physics

    A ball player wishes to determine her pitching speed by throwing a ball horizontally from an elevation of 3.0 m above the ground. She sees the ball land 15 m down the range. What is the speed of the ball as it leaves her hand?

    asked by PLEASE HELP
  79. Math

    Im in advanced math and were doing Graphing Inequalities and im not sure how to do it.

    asked by Noelle
  80. physics help?

    A coin with a diameter of 3.30 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 16.1 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration of magnitude

    asked by ruby
  81. math 12

    From 85 Records at D.S. Collegiate, the following data was collected: 12 studied Sociology, Economics and Accounting, 27 studied sociology and accounting, 20 studied economics and accounting, 21 studied economics and sociology, 36 studied sociology, 36

    asked by kitkat
  82. Finance

    A company issues a 10,000 par value 10-year bond with 8% annual coupon payments. If the yield rate is 6%, calculate the price of this bond.

    asked by Kim
  83. Physics

    When empty, a particular helicopter of mass 3770 kg can accelerate straight upward at a maximum acceleration of 1.29 m/s2. A careless crewman overloads the helicopter so that it is just unable to lift off. What is the mass of the cargo?

    asked by Jack
  84. Very Important Question!!!

    Please can someone tell me of any websites that can help me with algebra graphing, plotting, inequalities, and x & y intercept equations?

    asked by thawk
  85. chemistry

    What is the pH of a solution of vinegar, which is 5.00% (w/v) acetic acid (CH3COOH, Ka = 1.8 e-5).what is the % dissociation?

    asked by cs
  86. physics

    A ball player wishes to determine her pitching speed by throwing a ball horizontally from an elevation of 3.0 m above the ground. She sees the ball land 15 m down the range. What is the speed of the ball as it leaves her hand?

    asked by Trace
  87. Math

    The path of a cliff diver as he dives into a lake is given by the equation y= -(x-10)^2+75, where y meters is the divers height above the water and x meters is the horizontal distance travelled by the diver. What is the maximum hight the diver is above

    asked by Andy
  88. Math

    one way to resize a ring is to fill a bar into the ring.suppose a ring that is 20 mm in diameter has to be resized to fit a fingure 16 mm n diameter what is the length of the bar that should be inserted in order to make the ring fit the fingure? ( Hint:

    asked by Diala
  89. chemistry

    Ni+4CO=NI(CO)4 this reaction separates nickel from other solid impurities.Starting with 86.4g NI,calculte the pressure of NI(CO)4 in a container of volume To Drbobb222, after using the formular u gave. PV=nRT moles for NI(CO)4 is 171 and the volume is 4,

    asked by silly
  90. Statistics

    A student studies for a statistics exam where all questions are true or false. A reputable source indicates that with studying the student has a 90% chance of answering each question correctly. There are only three questions on the test. What is the

    asked by Joseph
  91. Trigonometry

    The Chrysler Building casts a shadow approximately 130 feet long on the street when the Sun's rays form an 82.9 angle with the Earth. Approximately how tall is the building? Round you answer to four decimal places.

    asked by Lauren
  92. Math

    Solve for x : 16y^2=120x-225

    asked by Josh
  93. physics

    Take the mass of the Earth to be 5.98 × 1024 kg. If the Earth’s gravitational force causes a falling 52 kg student to accelerate downward at 9.8 m/s2, determine the upward accelera- tion of the Earth during the student’s fall. Answer in units of m/s2.

    asked by todd
  94. Physics

    Two masses are suspended from a pulley as shown in the figure . The pulley itself has a mass of 0.30 kg, a radius of 0.20 m, and a constant torque of 0.30 m \cdot N due to the friction between the rotating pulley and its axle. What is the magnitude of the

    asked by Stacy
  95. Physics

    A rock weighs 140 N in air and has a volume of 0.00273 m3. What is its apparent weight when sub- merged in water? The acceleration of gravity is 9.8 m/s2 . Answer in units of N. If it is submerged in a liquid with a density exactly 1.9 times that of water,

    asked by Laura
  96. physics

    Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which can do the job.

    asked by sarah
  97. Nonfiction

    What does Seattle say about integrating white and Native American cultures?

    asked by Anonymous
  98. Teaching techniques

    1. Which learning technique is frequently used in the expository model of teaching? A. Deductive thinking C. Discovery learning B. Inductive thinking D. Knowledge-based learning 2. Which technique is used after a student gives a wrong answer, and the

    asked by I. Kan
  99. 6th grade math

    a man is now three times as old as his son and was 30 when his son was born. how old is his son now?

    asked by marisol
  100. physics help please

    The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 6.0 rev/s in 12.0 s. At this point the person doing the laundry opens the lid, and a safety switch turns off the washer. The tub slows to rest in 11.0 s.

    asked by emily
  101. english

    In a Word document, write a narrative paragraph that uses dialogue. The paragraph should demonstrate your ability to use sentence variety and proper punctuation. Your audience is your classmates. Begin with a 2-3 sentence description of the scene. Then add

    asked by lakesha
  102. chemistry

    does NOCL follow the octet rule

    asked by olivia
  103. physics

    Two spheres A and B, where A has twice the mas of B, are projected at the same horizontal velocity off the edge of two different height shelves. Sphere A leaves from a height of 2.0 m. Sphere B leaves a shelf 1.0 m off the floor. If both spheres leave the

    asked by Katie
  104. physics

    Suppose you roll a bowling ball at 2.5 m/s across the roof of a flat building. It leaves the edge and strikes the ground 2.0 s later. How high is the roof? How far from the edge of the roof does the ball hit the ground?

    asked by Tray
  105. business

    18. Which of the following is not a ramification of too much or too little status in an organization? a. it inhibits communication b. solidarity is not developed c. it interferes with work d. it causes resentment and conflict e. it causes communication

    asked by alan
  106. Programming

    Write a program that allows the user to display a budget as a pie chart. After the user enters numbers into the four text boxes a presses the button, the pie chart should be displayed. When I push the button for my code it does not display anything. Could

    asked by Stacy
  107. calculus

    find the centroid of the region bounded by x^2-12x and the x-axis

    asked by travis
  108. trig

    Find the values of the six trigonometric functions of the angle in standard position with the terminal side passing through the point P(-4, 3).

    asked by kp
  109. accounts

    A petty cash fund of $100 is replenished when the fund contains $5 in cash and receipts for $92. The entry to replenish the fund would

    asked by Anonymous
  110. bobpursley please help

    A coin with a diameter of 3.30 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 16.1 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration of magnitude

    asked by ruby
  111. Algebra 1

    What is the solution of this question. You are taking a science course in which there will be four tests, each worth 100 points. You have scores of 88, 88, and 98 on the first three tests. You must make a total of 360 in order to get an A. What scores on

    asked by Desperately seeking help!!
  112. calculus

    find the area the region bounded by the graphs of the given equation y=81x,y=x^5,x=0,x=3

    asked by Raven
  113. physics

    a flight attendant pulls her 75 N flight bag a distance of 325 m along a level airport floor at a constant velocity. the force she exerts is 39 N at an angle of 57 degrees above the horizontal. calculate the coefficient of kinetic friction between the

    asked by Alex
  114. Trigonometry

    Solve the equation on the interval 0

    asked by Sarah
  115. CHEMISTRY

    A 2.800-g mineral sample was analyzed for its calcium carbonate, CaCO3, content by titrating it with hydrochloric acid (the reaction products are calcium chloride, carbon dioxide, and water). The sample required 28.48 mL of a 0.1505 M HCl solution to react

    asked by Anonymous
  116. Physics

    A 7200 lb airplane lands on an aircraft carrier with a speed of 72 ft/s. The plane is caught by an elastic band (k=998 lb/ft) that has an initial stretch of 5.6 feet. What is the maximum distance the band is stretched?

    asked by sandhu
  117. Physics

    When a 55 N stone is attached to a spring scale and is submerged in water, the spring scale reads 30 N. What is the density of the stone? Answer in units of kg/m3.

    asked by Nicole
  118. chemistry

    Which of the following is a conjugate acid-base pair? A. H2SO4, H2SO3 B. NH3, NO2 C. CH3OH, CH3COOH D. HF, H2F E. NH3, NH4+

    asked by cs
  119. Economics

    The productivity of a single resource in producing wheat and microchips in both Canada and Japan: One unit of resource produces: Canada 50 tons wheat, 20 micrchips and Japan 2 tons wheat, 12 microchips. (b) Suppose Canada is endowed with 2 units of this

    asked by lucky
  120. physics

    A 1240 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1970 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the

    asked by student
  121. Physics

    If the create has a mass of 90 kg and is 1.6 {\rm m} tall and 0.80 {\rm m} in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to

    asked by Danny
  122. chemistry

    Calculate the H+ concentration (M) of a 0.010 M solution of NH4Cl. Note that the Kb for NH3 is 1.8 e-5.

    asked by cs
  123. literature

    What is the plot summary of Edgar Allan Poe's "Cask of Amontillado"? With the introduction, rising action, climax,falling action and denouement. Thanks...

    asked by klarmaesen
  124. algebra

    cube has avolume of 729 cubic centimeters what is its side length

    asked by james
  125. 8th Grade Math

    Can you please check my answer? An American football field is a rectangle 120 yards long (including both end zones) and 53 1/3 yards wide. What is the area of an American football field? my answer: 6360 square yards

    asked by Elizabeth
  126. Chemistry

    write the formula for the following chemical compounds 1.Sodium sulfide 2.sulfur hexaflouride 3.Ammonium sulfate

    asked by lisa
  127. Pen Foster Child Care

    Can you look over these to see if they are right? 1. The first step to planning a child care center is to A. develop your program philosophy. B. determine the nature of the need for child care facilities in your community. C. establish goals for the

    asked by Doris
  128. physics help

    Two thin rectangular sheets (0.15 m 0.50 m) are identical. In the first sheet the axis of rotation lies along the 0.15 m side, and in the second it lies along the 0.50 m side. The same torque is applied to each sheet. The first sheet, starting from rest,

    asked by student
  129. Chemistry

    in an endothermic reaction 1.energy is a product and the temperature of the surrounding environment increases 2.energy is a product and the temperature of the surrounding environment decreases 3.energy is a rectant and the temperature of the surrounding

    asked by Anonymous
  130. Trigonometry college

    Use a calculator to solve csc (theta) = -3. I know the answer is 3.48 and 5.94 but I need the steps to take on the calculator to arrive at the answer. I have a ti-84 calculator. thanks!

    asked by Sarah
  131. college

    Consider a gold sphere of mass 49 kg. Find its radius.

    asked by ciara
  132. Math

    Let AB and CD be two lines intersecting at point O. Let OP be the bisector of angle AOC, OT the bisector of angle POB, and OR the bisector of angle TOD. If angle POR = 25 degrees, find angle AOC and angle AOD.

    asked by Freaky
  133. pre algebra

    THe second of three numbers is 5 less than 4 times the first. The third is 9 less than twice the first. If 4 times the third os decreased by the first, the result is 6. find the three numbers.

    asked by lexy1727
  134. Calculus

    6x-3y=4 find dy/dx using differentiating implicity

    asked by Ivan
  135. chemistry

    what is the percent composition by mass of water in a compound with a gram formula mass of 4905 g/mol

    asked by mike
  136. chemistry

    Ni+4CO=NI(CO)4 this reaction separates nickel from other solid impurities.Starting with 86.4g NI,calculte the pressure of NI(CO)4 in a container of volume 4.00L

    asked by silly
  137. chemistry

    A 75.0-\rm mL volume of 0.200 M \rm NH_3 (K_{\rm b}=1.8\times 10^{-5}) is titrated with 0.500 M \rm HNO_3. Calculate the \rm pH after the addition of 13.0 mL of \rm HNO_3.

    asked by sam
  138. Chem

    The ka expression for HTe- is?

    asked by IH
  139. Chem

    What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?

    asked by IH
  140. Math

    Let AB and CD be two lines intersecting at point O. Let OP be the bisector of angle AOC, OT the bisector of angle POB, and OR the bisector of angle TOD. If angle POR = 25 degrees, find angle AOC and angle AOD.

    asked by Suzy
  141. math

    Which equation should be used to solve this problem? There is a number that is 8 less than the sum of 20 + 12. Find the number. Let n = the number.

    asked by Anonymous
  142. history

    what is the purpose of the three-fifths compromise

    asked by daniel
  143. chemistry

    How many liters of 0.250 M HCl would be required to react completely with 7.50 grams of magnesium hydroxide?

    asked by Justin
  144. physics

    what is optical excitation

    asked by pradee
  145. English

    1) The wind is personified as a tired man, who like a guest, knocks at Emily Dickinson's door and asks her to enter. 2) Being invisible, there is no point in giving him a chair (it is no use giving him a chair) 3) Through his poem Davies wants to stress

    asked by Franco
  146. chemistry

    divide eq 2 by 2: 2H(g)........> H2(g) delta H= -104.2Kcal H(g) ........> 1/2 H2(g) delta H= -72.1Kcal Now reverse the reaction: 1/2H2(g).......>H(g) delta H=+72.1Kcal subtract this eq from eq 1 1/2H(g)+1/2I2(g).....>HI(g) delta H=-1.1kcal

    asked by Anonymous
  147. math

    there are 24 hours in a day and scientists tell us that we should sleep for 3/8 of the day.How much time should we spend sleeping?

    asked by jessie
  148. Finance

    A company issues a 6-year bond with a face value of 5,000 and semi-annual coupons payments of $275. If the yield rate is 7%, find the price of the bond.

    asked by Kim
  149. physics please help

    A woman who weighs 4.33 X10^2 N is leaning against a smooth vertical wall, as the drawing shows. The height of the wall from her shoulder to her hand is .400m the angle at which she is laying on the wall is 50 degrees and the rest of the height at which

    asked by don
  150. geometry

    a man builds a teepee in his back yard. the width of the teepee is 12ft. The height of the teepee is 8 feet. How long is the length of the pipes?

    asked by Joann Paynter
  151. Stastics

    To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette has recently been marketed. The FDA tests on this cigarette yielded

    asked by Roger
  152. Trig

    Find the value of tangent of angle A, given cos2A = 4/5, and A terminates in quadrant 2

    asked by SK
  153. math

    How do I calculate the monthly payment...... Loan is $26,000.00 Down payment is 5,000.00 11% for 36 months

    asked by Mare
  154. Chemistry

    which is an example of physical change 1.water decomposing into hydrogen and oxygen 2.potassium and bromine combining to form potassium bromide 3.solid ice melting into liquid water 4.none of the above i think its 3.

    asked by jessica
  155. french, english

    this is a french fable that I translated but I don't really undersand it. It is called the lion and the hunter... A braggart, lover of hunting, Just lost a dog of good breed, He suspected the body of a lion, Saw a shepherd: "Teach me, please, My thief, he

    asked by mark
  156. English

    I still don't know how to rephrase dabbling correctly. Can you check if everything is OK? Thank you for helping 1)He thought there should be sea-police upon the Haerwich-Holland ranges since that sea stretch was constantly overrun by pirates. 2) He was

    asked by Franco
  157. business math

    two partners in a business. one partner mortgaged business property to his co-partner for $15,000.00 at 12% a year interest. no payments were ever made for 17 years. how much is owed?

    asked by martin sostre
  158. Chemistry

    write the formula for iron(II)bromide iron(III) sulfate

    asked by Anonymous
  159. microeconomics, please help me solve .

    The majority of the world’s diamonds comes from Country A and Country B. Suppose that the marginal cost of mining a diamond is $1,000 per diamond and that the demand schedule for diamonds is as follows: price quantity 6,000 5,500 5,000 6,500 4,000 7,000

    asked by mary
  160. statistics

    Four jelly beans are selected, one at a time from a bowl containing 6 black, 6 red and 6 green jelly beans. Let x represent the number of black jelly beans selected in 4 draws from the bowl. (A) If this experiment is completed without replacing the jelly

    asked by kelly
  161. business

    A colleague, an amateur pilot, shows up at a critical meeting with some Japanese executives wearing a tie adorned with pictures of a P51D Mustang escorting a B-29 Superfortress (the Mustang is a World War II fighter and the Superfortress is the type of

    asked by maggie
  162. Chemistry

    if metal A is placed in an ionic solution containing metal B ions and no reaction occurs, then metal B is most likely: A.) a halogen B.) higher on the activity series C.) not on the activity series D.) a catalyst

    asked by Lauren
  163. business

    You know that you have only $110 left before you hit the limit on your credit card, and you have $8 in your wallet. You are the host to three clients. One has just announced that he is considering the lobster dinner for $40. The other two clients nod their

    asked by maggie
  164. business

    While waiting outside a meeting room, you notice that the next middle manager making a presentation is rehearsing what he will say. The pants zipper of his blue suit is open and part of his white shirt is protruding

    asked by maggie
  165. college

    If I combined 25.0 grams of aluminum hydroxide with 75.0 mL of 0.500 M HNO3 how many grams of aluminum hydroxide would be formed?

    asked by Justin
  166. Economics

    The productivity of a single resource in producing wheat and microchips in both Canada and Japan: One unit of resouce produces: Canada 50 tons wheat, 20 microchips and Japan 2 tons wheat, 12 microchips. (a) What is the opportunity cost of producing a ton

    asked by lucky
  167. physics

    A block starts with a speed of 18.0 m/s and slides for a distance of 2.2 m down a 40° ramp (muk = 0.43). What is its final speed? (m/s) Thanks for suggeting the following solution. The block starts with an initial speed of 18.0 m/s.Does it have any

    asked by sandhu
  168. Literature

    What are some similarities between the Wife of Bath's Tale and The Merchant's tale (by chaucer)?

    asked by Anonymous
  169. Math

    Explain how you can tell (without graphing it) that the rational function r(x)= x^6 +10 / x^4+8x^2+15 has no x intercept and no horizontal, vertical, or slant asymptote. What is its end behaviour? Please help? thankq

    asked by Amanda
  170. physics

    a.)if a person is trying to throw and object with a mass of 2000kg, how much force must they use to lift it? b.) in throwing it, the person accelerates the object from rest to 25m/s in 1.5 meters. How much force is used to do this?

    asked by Anonymous
  171. chemistry

    Write balanced equations for the following: K3P + Ge = Al2(CO3)3 + AgBr Cr(ClO3)3 =

    asked by steve
  172. ELA

    Does this introduction have a connection to the main idea "Vampire Survival" Vampires have become the most interesting and popular immoral creature during the years. Characters as a vampire in a movie or even in book! Now… If you believe that vampires

    asked by Anonoyms
  173. Finance

    A company issues a 6-year bond with a face value of 5,000 and semi-annual coupons payments of $275. Find the yield rate if the price of the bond is 6,500.

    asked by Kim
  174. Economics

    Porter’s Five Forces Model to the American automotive industry.

    asked by Anonymous
  175. ICT

    which one is an important property of fiber cable? 1)noise 2)reflection 3)interference 4)attenuation

    asked by sweetie
  176. Trig

    find sin(s+t), given that sin t=1/3, t in quadrant 2, and cos s = -2/5, s in quadrant 3

    asked by SK
  177. Algebra 1

    Translate to an inequality using the variable x. The number of people in the chess club is less than or equal to 21. Please let me know if this is correct. x >= (less than or equal to) 21 Thanks for you help

    asked by Desperately seeking help!!
  178. college math

    how many grams of NaOH are needed to make a 30% w/w solution using deionized water as the solvent

    asked by Wanda
  179. calculus

    Suppose a scooter travels at a velocity of v(t)= 8t meters/hour. Then the TOTAL distance traveled by the scooter over the first 2 hours is?

    asked by dee
  180. 6th grade

    how do u change a ratio into a percent

    asked by shannon
  181. Albebra

    You want to buy a car but the price of $22000 is a bit steep. You are willing to put down $3000 and finance it over 5 years; however, you are restricted to no more than $325 per month. The interest rate is 6% per year. What is the price you can afford to

    asked by sharone
  182. science

    Hi. I am conducting a science experiment to present to a class. Details of experiment below. Materials: 1 can of non-diet soda 1 can of diet soda 2 buckets of water 1. Fill bucket 2. Put can of non-diet soda into a bucket of water. 3. Wait for the can to

    asked by Guy
  183. Statistics

    A community of 100 homes constructed in 2009 contains 47 that used conventional construction. The reminder used Energy Star building standards. A real estate agent is going to show a client 5 homes. What is the probability that 3 were built using

    asked by Jen
  184. algebra

    what are 3 consecutive positive even integers that the product of the second and third integers is twebnty more than ten times the first integer?

    asked by naicha
  185. chemistry

    The electrochemical cell described by the cell notation has an Eo of -0.37 V. Calculate the maximum electrical work (kJ) the cell has done if 331.73 g of Cu(s) (Molar Mass - 63.55 g/mol) reacts. Round your answer to 3 significant figures. Cu(s) l Cu+(aq)

    asked by flame
  186. English

    Thank you for your corrections. I still need your help with a few sentences. I apologise for not writing an introduction to my previous post. 1) Pay careful attention to the plural of words and to the spelling of the verb “say”. 2)As you started

    asked by Franco
  187. Chemistry

    So I mixed 25 mL of 0.002 M KSCN and 25 mL of water in a beaker. The solution was clear with no precipitants. But then it says the ions present in KSCN are: so i put K+,S2- , CN- is that right?

    asked by Ana
  188. Physics

    A train has a mass of 5.22 multiplied by 106 kg and is moving at 82.0 km/h. The engineer applies the brakes, resulting in a net backward force of 1.87 multiplied by 106 N on the train. The brakes are held on for 21.0 s.

    asked by john
  189. physics

    An aluminum wire of radius 3.10 10-4 m is stretched between the ends of 2 concrete blocks. When the system (wire and concrete) is at 35°C, the tension in the wire is 57.0 N. What is the tension in the wire when the system is heated to 185°C?

    asked by Ben
  190. algebra

    Functions of the same famil have the same... (?) Can someone help with the answer??

    asked by Adam
  191. Chemistry

    12.5 g of KCl (MM = 74.55 g/mol) is dissolved in enough water to make 675 mL of solution. Calculate the molarity of the KCl solution.

    asked by Alex
  192. calculus1

    x^5-5y=6-x find dy/dx using differentiating implicity

    asked by Ivan
  193. calculus2

    x^2+2y^2-11=0 find dy/dx using differentiating implicity

    asked by Ivan
  194. physics

    a.)if a person is trying to throw and object with a mass of 2000kg, how much force must they use to lift it? b.) in throwing it, the person accelerates the object from rest to 25m/s in 1.5 meters. How much force is used to do this?

    asked by Anonymous
  195. ELA

    Is the Introduction below connection to the main Idea Vampire Survival: Vampires have become the most interesting and popular immoral creature during the years. Characters as a vampire in a movie or even in book! Now… People might wonder that are

    asked by Anonoyms
  196. Chemistry

    4.745 eq. of magnesium will displace how many grams of silver from a silver nitrate solution? I have written the equation as follows: Mg + 2AgNO3 = Mg(NO3)2 + 2Ag I'm not sure how to proceed with converting the 4.745 eq. Any help would be appreciated.

    asked by Jennifer
  197. geometry

    if the diagonals of a rhombus is 12 and 16 what is the measure of a side of the rhombus 5,,20,10 square root 3

    asked by Anonymous
  198. History

    What features of the constitution make it flexible enough to apply to the nations today?

    asked by Katherina
  199. Chemistry

    if it takes 20 h to convert 100g of reactant A to roduct C at 20 degrees celcius, approximately how many minutes would it take at 110 degrees celcius? I know the answer, I just don't know how to get the answer

    asked by Andrea
  200. Chem

    What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?

    asked by IH
  201. math

    a room at the hamilton inn costs 104 dollars per night for two people there is a 19 dollar charge for an extra person write an algebric expression thaat shows the cost oper night for a family of four staying at the inn

    asked by miley
  202. OMG

    I have been trying to get my question answered and it still haven't more then 1 hr you know when are you going to answer my and every one else's question

    asked by angry!!!!
  203. math

    sara wants to buy a jacket on sale. its original price is $15.00.The sale is 25% off.How much will sara save by buying the jacket on sale ? my answer is $3.75 is it correct?

    asked by AnOnYmOuS1
  204. chemistry

    Calculate the pH of a 5.20 10-3 M solution of H2SO4.

    asked by justin
  205. chemistry

    Calculate the pH of 3.9 10-8 M HNO3.

    asked by justin
  206. math

    6 feet in 2 yards; how many yards in 10feet? i think the answer is 3

    asked by AnOnYmOuS1
  207. College Algebra

    perform the indicated operations 9-3[4-3(2)

    asked by Annie
  208. College Algebra

    can someone tell me how to get a division symbol when posting problems in Algebra

    asked by Annie
  209. College Algebra

    Perform the indicated operations 10 − 5[24 ÷ 6 ⋅ 2] 1

    asked by Annie
  210. History

    What are some specific achievements of the people that Romans called "Barbarians"

    asked by Mystery chicken
  211. 5th grade

    A quadrilateral has angle measures of 71 degrees, 28 degrees, and 115 degrees. Which is the measure of the last angle?

    asked by Nathan
  212. Math - Rates of change and the number e (check + h

    Let f(x)= (1/b)^x for b>1, and left g(x) = (f'(x))/(f(x)) a) Predict the shape of the graph of g(x). it will be a straight line, since ln(1/b) will be a constant b) Test your prediction by exploring two specific cases. Values of (1/2) and (1/10) c)

    asked by Farah
  213. college

    what is the concentration of the chloride ion when enough water is added to 12 grams of sodium chloride to make 4.0 Liters if solution? (a) 0.025 M (b)0.05 M (c) 0.1 M (d)0.2

    asked by Annmarie
  214. physics

    a 50kg object is suspended by a rope over a pulley which is connected to a large mass of 61.3kg. The mass rests on a 30 degree inclined ramp. The coefficient of kinetic friction between the block and the ramp is .15. What is the 50kg object's acceleration?

    asked by Anonymous
  215. math

    For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f−1 8 5f(3/8) 

    asked by Suzy
  216. science

    what happens to a soccer ball underwater at a depth of 50 feet?

    asked by Matthew
  217. english

    i have to write a research paper on SAP Applications and i need some authentic websites ?

    asked by JJ
  218. calculus3

    x^2/3+y^2/3=5 find dy/dx using differentiating implicity

    asked by Ivan
  219. calculus4

    2y^3-y=7-x^4 find dy/dx using differentiating implicity

    asked by Ivan
  220. calculus5

    (y^2+2)^3=x^4y+e^2 find dy/dx using differentiating implicity

    asked by Ivan
  221. math

    a ticket booth sold 456 tickets and collected $2311.50 in ticket sales. Adult tickets are $6.50 and child tickets are $2. how many tickets of each type were sole?

    asked by debra
  222. psychology

    the brain and it's structured functions

    asked by Misty
  223. algebra

    find the range of the given domain {-1,0,1} f(x)= 3x^2-2x+2

    asked by Ashley
  224. math

    wat is the rule for Input-1,2,3,4,5 Output-3,5,7,9,11

    asked by Logan
  225. Psychology

    Susie, Sally, and Serena are roommates. Susie and Sally are neat freaks, but Serena is a slob. Both Susie and Sally want to use reinforcement to get Serena to start picking up her messes. Susie wants to use positive reinforcement as her technique, and

    asked by Anonymous
  226. us 101

    What tips for creating a study environment may be most effective for you? What might you do to make that study environment real for yourself?

    asked by Anonymous
  227. chemistry

    what is the molecular mass of a solute if a solution containing 150 g of that solute and 1.0 kg of water has a boiling point of 102.0 degree c? (Kb= 0.512 degree C/m)

    asked by dj
  228. History

    What features of the constitution make it flexible enough to apply to the nations today?

    asked by Katherina
  229. ICT

    which of the following features is provided with a modem? 1)speeds 2)self testing 3)transmission rate 4)all of these

    asked by sweetie
  230. English

    Can you please tell me if the following sentences are possible? Thank you very much. 1) A trochee consists of a stressed syllable followed by an unstressed one. A trochee consists in a stress-unstress pattern. 2) The mirror is described as being

    asked by Franco
  231. chem

    balance the equation:(i can balance the equation but the problem i have is finding the formula for the last part HC2H3O2(aq) + Ca(OH)2(aq) -> H2O(l) + find the formula here the last part would be CaOC2H3O2? im a little confused. did the O fromt he H2O come

    asked by hannah
  232. math

    using the expression you created above calculate the cost of the same family of four staying at the inn for 3 nights

    asked by miley
  233. math 5th

    Does one mile = 5280 feet?

    asked by jill
  234. math

    the lest common denominator for the sum 3/8+5/12is 24 name a nother common denominatorthat you could use?

    asked by kay
  235. Math

    For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f to the power of -1 times 8 divided by 5 times f times 3/8

    asked by Suzy
  236. stat

    a credit card company estimated that 62% if its customers are males. The company is considering a randomly selected sample of five people.

    asked by tanya
  237. Trig

    the angle of depression from the top of a building to a point on the ground is 32degrees30', how far is the point of the ground from the top of building if the building is 252m high?

    asked by SK
  238. math

    the fee to join the local pool is $445.00 for the season. the pool is advertising a 25% discount for a new members. how much will a family save if they join my answer is $111.25

    asked by AnOnYmOuS1
  239. trig

    Use the double angle formula to verify the identity cotxsin2x=1+cos2x

    asked by SK
  240. chemistry

    The electrochemical cell described by the cell notation has an Eo of -0.37 V. Calculate the maximum electrical work (kJ) the cell has done if 331.73 g of Cu(s) (Molar Mass - 63.55 g/mol) reacts. Round your answer to 3 significant figures. Cu(s) l Cu+(aq)

    asked by flame
  241. English

    I can't find any synonyms for the words I need to rephrase. Can you check them, please? 1) He thought there should be sea-police upon the Haerwich-Holland ranges since that sea stretch was constantly overrun by pirates 2) He was expert in dabbling in

    asked by Franco
  242. geometry

    I'm having a hard time understanding how to fine the Total Area(T.A) for a regular pyramid.

    asked by Helen
  243. MATH

    Ratinalize the denominator. Assume all varibles represent positive numbers. Sqrt(18)/x

    asked by RachelMSANC
  244. hospitality

    in a menu template, when it says subhead as one of the templates, what does that mean

    asked by ted
  245. algebra

    solve using the multiplication principle.

    asked by tim
  246. English

    I need help putting my thesis into "parallel grammatical structure". Children should be limited on the amount of television they watch because not only is it filled with bad influences but it causes them behavior problems, and ultimately puts their health

    asked by Kayla
  247. COMP 155

    When writing a paragraph, it is important that the topic sentence and supporting points within that paragraph be directly related. What would be the reaction of a reader if the topic sentences in an essay did not coincide with the supporting points?

    asked by Keisga
  248. Language

    lesson 3 The Novel exam 00778900

    asked by Catherine
  249. math

    need help with math 117 week 4 checkpoint

    asked by diane
  250. math

    did you know when you try to find the least commen multiple of 3 numbers you have to divide by two after you get your answer my class (ms.lott in texas) told us that for some reason its doubling the number so always divide by two once you have crossed out

    asked by alyssa
  251. English

    I need to find 2 medaphors in the book Among the Enemy by Margaret Peterson Haddix. I can't find them after I've read it twice.

    asked by Nick
  252. Microeconomincs

    Find an article that deals with business impact on the environment. and i want to know what does business impact on the environment mean?

    asked by mike
  253. Spanish

    If this is what they are saying in Spanish- "Yo me llamo Joey.“ Vivo en Chicago pero soy de Springfield. “ How would I answer these two questions? ¿De dónde es Joey? ¿Dónde vive? Thank you

    asked by Andrea
  254. college algebra

    S = 100(1-e^kt) if 15000 books are sold after 1 year find the exact vaule of k?

    asked by doodles
  255. chemistry

    New to working with equivalent weights. Any help would be appreciated. A metal weighing 4.0080 g formed 4.1002 g of hydride. What is the equivalent weight of the metal?

    asked by Jennifer
  256. Microeconomics

    How does a firm maximize their total revenue? What happens when a firm raises its price in a market in which the price is in the inelastic range of the demand curve?

    asked by yt
  257. US History

    What was the main purpose of Truman's speech a)to frighten the soviet gobernment b)to make clear how the United States would respond to Communist aggression c) to win congressional approval of the containment policy d)to expand the cold war

    asked by Bread
  258. adult education

    Is a fixed-price contract a good way to achieve the government’s goal of curbing rising costs? Explain

    asked by om7
  259. English

    Is this correct? Here are the main categories: chemical elements games, astronomy games, cell games, Dino might, seasons, life cycles, animal classification and deep sea science.

    asked by Anonymous
  260. US History

    I'm doing a song about Italian Immigration from the 1800's for a project nd I'm kind of stuck. Can someone help me out? What I have is this: Hey fratello, wish me luck Hey sorella, I’m awestruck Hey there Nonno, I’m earning bucks In the land of

    asked by Alex
  261. chemistry

    What is the (mass, weight)measure of nitrobenzene, which derived from the action of nitric acid in 60 g benzene? Please sove cpmpletely

    asked by Benito
  262. algebra

    what is slope and y intercept for y=22.048x-19.464

    asked by chris
  263. math

    a car is driving at a speed of 60 mi/h. What is the speed of the car in feet per minute?

    asked by ty
  264. college

    One way of assembling information necessary to treat a patient can be found in a unit record system. Using the Library and other outside references, define the requirements of a unit record system, what a unit record would include, and how the information

    asked by tpickens
  265. physics

    if the static coefficient of friction in the ice rink between the floor and the skater's shoes is .2, how much pushing force can he supply before his boots will begin to slide?(the skater's mass is 120kg)

    asked by beth
  266. Chemistry

    How do I figure out what ions are present in a compound? Is it as simple as separating the compound? Like HCl --> H+, Cl-

    asked by Ana
  267. World History

    How is it that the Roman Catholic Church was able to gain power in the Roman Empire and what effect did the shift of power have on the telling of the history of the world?

    asked by Max
  268. 5th grade math

    What fraction is 2/3 of 3/4 ? and 12-m = 5 2/3 ? Thank you for your help.

    asked by jill
  269. algebra II

    The number S of ant species in K Cyn can be modeled by the function S = -0.000013E squared + 0.042E - 21 where E is the elevation (in meters). Predict the elevation(s)at which you would expect to find 10 species of ants.

    asked by Sean
  270. Algebra

    -0.7(0.32 + 6x) = -3.3x

    asked by Jasper
  271. math

    Two cards are drawn without replacement from an ordinary deck of 52 cards. What is the probability that the second card is a face card, if the first card was a queen? Would this be 11/51?

    asked by m
  272. algebra 1

    hi. i'm confused so please help. thanks. 9 - x/6 = 7(x+1)/13 multiple choice a. 6 b. 13 c. 11 d. 12 thank you again.

    asked by Anonymous
  273. ICT

    which of the devices uses reflected light to determine the location of pencil marks on test answer sheets and similar form? 1)barcode reader(BCR) 2)magnetic ink character recognition(MICR) 3)optical mark reader 4)mouse

    asked by sweetie
  274. ethics

    What kinds of things are contained in a businesses terms and agreements pages?

    asked by unknown
  275. Trig

    The angle of depression from the top of the building to a point on the ground is 29degrees30', the point of the ground is 36 meters from the top of the building. Find the height of the building

    asked by SK
  276. SORRY

    I am sorry Ms. Sue.....!!!!

    asked by Anonoyms
  277. math

    if a phone team asks each person to call two people, how many rounds will it take to call 64 people?

    asked by missy
  278. Math

    The implied domain of f (x) = square x+5 is?

    asked by Rose
  279. math

    64 miles on 2 gallons;how many miles on 3 gallons? n=96

    asked by AnOnYmOuS1
  280. 2nd grade

    what is the antonym of the word smooth

    asked by paige
  281. math

    If x= (2 -3), y= (1 0 3) 4 5 2 1 0 find when possible, the matrix a) xy b) yx c) x square

    asked by Tazz
  282. Math

    How do I determine the median of the following numbers 25, 28, 22 ,27, 25, 20, 30, 23, 27, and 29

    asked by Mare
  283. college algebra

    9 − 34 − 3(2)

    asked by Annie
  284. math

    150 miles in 3 hours;how many miles in 30 minutes? my answer is 1.30

    asked by AnOnYmOuS1
  285. math

    6 for $2.10 1 is for 35cents

    asked by AnOnYmOuS1
  286. Math

    a man plans to build a teepee in the back yard for his children. The distance between the stays is 12 ft. the height to the top of the teepee is 8 ft. what is the length of pipes required for the teepee?

    asked by Joann Paynter
  287. Family day care regualtions educational levels

    Put this in order from begining to last associates degree 40 hour training bachelors degree cda degree or FCCPC associates thanks

    asked by Martha
  288. English

    Does this sentence need a comma? On this web site one can choose from eleven central science areas.

    asked by Mary
  289. physics

    An object has 90.38 Joules of energy and it is traveling at 11.26 m/s. What is the objects mass?

    asked by Ibis
  290. 7th grade math

    a moving van's load changes from 1000 pounds to 800 pounds after delivering an appliance. What is the percent of decrease

    asked by math
  291. math

    For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f−1  8 5f(3/8) 

    asked by Suzy
  292. math

    Let AB and CD be two lines intersecting at point O. Let OP be the bisector of ]AOC, OT the bisector of ]POB, and OR the bisector of ]TOD. If ]POR = 25, find ]AOC and ]AOD.

    asked by Suzy
  293. english

    what does the mentioning of heavenly bodies, i.e. the sky, the air, etc., reflect in the "The Shawl" by Cynthia Ozick?

    asked by steve
  294. 5th grade

    whats the gcf of 16 and 42 why

    asked by kristi
  295. Math

    How much foil is required to cover a rectangular box that is 4 in by 8 in by 5 in?

    asked by Chelle
  296. Algebra ?

    When dN= 3 ; H = 4.6 ; Do = 70 ; Dn=38 ; L=77,8 Solve this : R= d + H Dn-Do -------------- 2L

    asked by Reema
  297. cosmetics science

    Could you tell me,what is the specific mobile phase of lycopene when stationary phase is silica? Thank you.

    asked by sine
  298. US History

    Who did Truman promise to help? a)subjugated minorities b)armed resistance movemnts c)majorities whose freedom was threatened d)all of the above I think D

    asked by Bread
  299. math

    f(x) = -x squared + 1 for x= -3

    asked by jake
  300. Math

    What is 4/6XDivided by 19xy ?

    asked by Sammi Danielle
  301. psy 240

    mary is a single mother of one child. She has had difficult sleeping for the last month.Define her disorder

    asked by Lisa Smith
  302. 11th grade

    which ons is stronger 1)A solid cylinder of 2)A hollow cylinser of iron 3) A cylinder made up of slits of iron

    asked by physics
  303. CAL 1

    DERIVATIVE f(x)=4t+1 (x,x+2)

    asked by help
  304. math

    Two cards are drawn without replacement from a deck of 52 cards. What is the probability that both are tens, if the first card was a ten?

    asked by m
  305. Algebra II

    What does it mean when the domain of a function is (-‡,‡)? What about a range of,say, (2,‡)? (In case it doesn't come out right, that symbol is the infinity symbol).

    asked by Lilly
  306. math

    find unit rate 40 textbooks weigh 120 pounds

    asked by steve
  307. math

    Today a new Ford costs $24,000 in 1970 it cost $6,000 what is the price relative?

    asked by Mare
  308. math

    10 servimgs per quart, how many serving per gallon? i think 40

    asked by AnOnYmOuS1
  309. medical billing and coding

    you work in a physcians office performing billing. You notice that guidelines haven't been followed accurately in completing the claim form. what will happen if you don't correct the claim form?

    asked by kim
  310. EDU310

    please help me with this two questions I am in the hospital because i have a car accident please help 1- There are many groups that influence education in schools today. Who are these stakeholders and how do they impact the way children are educated in

    asked by luly
  311. need physics help

    d=2.1 a=? vi=0 and t=.60 and i have to use the formula d=vit+1/2at^2, how do i do this? can you please show work so i can understand.

    asked by mike
  312. Health

    what is the drug classification of inhalants?

    asked by hannah
  313. English

    Thank you very much. I still have a few questions. 1) Your sentences are confused and sometimes disconnected. Check the spelling in the dictionary before writing a word and make sure you are using tenses correctly. 2) White people failed (their mission)

    asked by Franco
  314. math

    For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f−1(8/5f(3/8) 

    asked by Suzy
  315. US History

    Do you think the Truman Doctrine would be a good model for conducting American foreign policy today? Why or why not ?

    asked by Bread
  316. general psychology

    What possible factors could be causing workplace stress for Felicia? Identify and explain methods she could use to cope with these sources of stress. Write your observations in a report.

    asked by TANYA
  317. social studies

    what were conditions like intenements

    asked by mama
  318. social studies

    What did abraham lincoln do that was important for the thanksgiving celebration?

    asked by Katherine