Popular questions and responses by Brenda
  1. algebra

    how many grams of 2.5% hydrocortisone cream should be mived with 360 g of 0.25 to make a 1% hydrocortisone cream

    asked on June 2, 2013
  2. science

    When 90 kJ is removed from a 2-kg copper bar its temperature drops from 200 degrees celcius to 85 degrees celcius what is the specific heat of the iron?

    asked on March 22, 2011
  3. math

    If you diluted 230 ml of 8% benzocaine lotion to 5%, how much could you produce?

    asked on February 1, 2016
  4. Chemistry

    NaCl is soluble in water, but I2 is not. Explain

    asked on October 7, 2011
  5. math

    Find the amount of interest on a loan of $10,500, at 9% interest, for 124 days using the exact interest method.

    asked on December 13, 2015
  6. Chemisty

    How do I solve what is the mass of a 32.5 mL sample of ethanol if the density of ethanol is .789 g/mL. I know Mass = Density * Volume. So 32.5 mL * .789g/mL = the mass, but I don't know how to solve that.

    asked on August 26, 2013
  7. statostocs

    The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0°C at the freezing point of water. Tests on a large sample of these thermometers reveal that at the freezing point of water, some give readings

    asked on April 10, 2013
  8. Healthcare Finance

    Metropolis Health System has received a wellness grant from the charitable arm of an area electronics company. The grant will run for twenty-four months, beginning at the first of the next fiscal year. Two therapists and two registered nurses will each be

    asked on July 18, 2012
  9. physics

    A shotputter throws the shot with an initial speed of 15.5 m/s at a 32.0 degree angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.20 m above the ground.

    asked on September 22, 2010
  10. Physics

    A 123-cm-long, 5.00 g string oscillates in its n = 2 mode with a frequency of 200 Hz and a maximum amplitude of 4.50 mm. What is the tension in the string?

    asked on July 16, 2010
  11. Chemistry

    In the experiment 0.500 g of copper reacted with oxygen to give 0.563 g of copper oxide. What is the empirical formula of the oxide expressed as a chemical formula?

    asked on October 24, 2012
  12. algebra

    The value of a particular investment follows a pattern of exponential growth. In the year 2000, you invested money in a money market account. The value of your investment t years after 2000 is given by the exponential growth model A=7200e^0.045t A) How

    asked on November 24, 2019
  13. Physics

    A boy wishes to row across a river in the shortest possible time. He can row at 2m/s in still water and the river is flowing at 1m/s. At what angle should he point th efront of his boat? The answer is 90 degrees but I don't understand how to solve the

    asked on September 23, 2012
  14. science

    A grasshopper floating in water generates waves at a rate of three per second with a wavelength of two centimeters. (a) What is the period of these waves in seconds? (b) What is the wave velocity in m/s?

    asked on March 22, 2011
  15. Math

    Use the quadratic formula to find the real solutions of the equation 2x^2-3x=1

    asked on November 1, 2018
  16. Math

    A Ferris wheel has a diameter of 60 feet. When you start at the bottom of the Ferris wheel, you are 2 feet from the ground.The Ferris wheel completes one rotation in 2 minutes. Create a graph that represents your height relative to the center of the Ferris

    asked on June 3, 2016
  17. math

    A clothing company has budgeted $58,000 for the purchase of 7 sewing machines. The 7 sewing machines are to be chosen from two models, model X and model Y. If a model X sewing machine costs $8,000 and a model Y sewing machine costs $9,000, how many model X

    asked on May 8, 2016
  18. statistics

    Chapter 06, Problem 8 A tire manufacturer has been concerned about the number of defective tires found recently. In order to evaluate the true magnitude of the problem, a production manager selected ten random samples of twenty units each for inspection.

    asked on November 12, 2011
  19. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g) / 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond

    asked on January 16, 2011
  20. biology

    which of the following statements are true there are 2 polar covalent bonds in water there are 3 ionic bonds in water there is 1 ionic and 1 covalent bond in water electrons are less attracted to oxygen than hydrogen

    asked on August 28, 2009
  21. Physics

    What wil be the new area of 400cm square of a solid,if its temperature is raised by 10k.(L.E=19times 10raised to power 2

    asked on February 15, 2019
  22. Psychology

    The part of a person's self-conceop that is based on identification with a nation, culture, group or gender is called: A. Social identity B. Social stereotype C. Tacit identity D. Social concept I chose d is this correct

    asked on February 3, 2017
  23. Math- probabilities

    A gumball machine contains 6 red gumballs and 6 white gumballs. Two gumballs are purchased, one after the other, without replacement. Find the probability that at least one gumball is white. Express your answer as a decimal, rounded to the nearest

    asked on March 23, 2016
  24. math

    Mr. Mitchell deposited $40,000 in a bank and earned simple interest at 7% per anum for two years.calculate the amount he will receive at the end of the two year period

    asked on January 30, 2016
  25. physics

    What is the net gravitational field due the sun and earth at the center of the moon? You are given that the mass of the sun in 1.99 x 10^30 and the mass of the earth is 5.97 x 10^24. The distance from the center of the sun to the center of the earth is

    asked on February 4, 2015
  26. Math

    Write the ratio 2.7kg to 1.8kg as a fraction to the simplest form, with whole numbers in the numerator and denominator.

    asked on July 31, 2013
  27. chemistry

    what is the percentage of alcohol in a misture containing 1500 mo of witch hazel (14% alcohlol), 2000 ml of glycerin, and 5000 mls of 50% alcohol?

    asked on June 2, 2013
  28. n-clex RN

    which book is good to study for n-clex rn

    asked on May 10, 2013
  29. Economics

    Would Wells Fargo's market structure be Monopolistic competition?

    asked on October 27, 2012
  30. Economics

    What is the difference between microeconomics and macroeconomics? Discuss and contrast the two theories.

    asked on September 20, 2011
  31. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g) / 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond

    asked on January 25, 2011
  32. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g) 200.9 226.7 H2(g) 130.7 0 C2H6(g) - - -84.7 Bond Bond Energy

    asked on January 15, 2011
  33. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g 200.9 226.7 H2(g) 130.7 0 C2H6(g) -- -84.7 Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 If the value of the standard entropy change, ∆Sº for the reaction is

    asked on January 12, 2011
  34. Computer programming

    The code below is supposed to calculate the average for a student using 10 grades. It contains several errors. Rewrite the code using the correct naming conventions and turn in the full solution and discuss using this topic. Dim arrGrades(10) as integer

    asked on August 17, 2010
  35. algebra

    Soybean milk is 12% protein; cornmeal is 6% protein. How many pounds of each should be mixed together in order to get 240 pound mixture that is 8% protein?

    asked on June 27, 2010
  36. biology

    which of the following has a basic ph lemon juice milk of magnesia tomatoes hydrochloric acid

    asked on August 28, 2009
  37. math

    a train is 50 miles from Seattle. It is traveling away from Seattle at a speed of 60 mph. In how many hours will the train be 290 miles.

    asked on May 8, 2016
  38. math

    a solution must contain at least 30% orange juice but not more than 20% ginger ale in addition to its other ingredients. If the punch bowl is to hold 400 cups of this solution, what are the amounts of orange juice and ginger ale?

    asked on May 8, 2016
  39. MATH Please Help Please

    Algebra 2 There is a graphs of the sequence f(n)=2n-3 and a graph of the function f(x)=2x-3 What difference exist between the two graphs? What accounts for the differences between the graphs in terms of domain and range? Help please I don't understand

    asked on May 6, 2016
  40. Math

    - 2 1/4 cups all purpose flour - 1 teaspoon of backing soda - 1 teaspoon of salt - 1 cup (2 sticks) of butter softened - 3/4 cups of sugar - 3/4 cup of packed brown sugar -1 teaspoon of vanilla extract -2 large eggs -2 cups of chocolate chips -1 cup of

    asked on October 4, 2015
  41. science

    which of the following properties of water explains its characterization as the universal solvent. a)kinetic energy of liquid water molecules b)high specific heat c)polarity of water molecules d)high surface tension I chose C

    asked on August 26, 2015
  42. accounting

    On December 31, 2013, University Theatres issued $500,000 face value of bonds. The stated rate is 8%, and interest is paid semiannually on June 30 and December 31. The bonds mature in 15 years. If required, round your answers to the nearest whole dollar.

    asked on April 22, 2014
  43. Statistics

    How do I plug this into the Binomial Probability Formula? prob(lost) = 5/1000 = 1/200 prob(not lost) = 199/200 prob( 2 of 22 are lost) = C(22,2) (1/200)^2 (199/200)^20 = .005224..

    asked on March 9, 2014
  44. Accounting II

    calculate the total dividends and the per-share dividends declared on each class of stock for each of the six years.

    asked on May 22, 2013
  45. math

    n points are arranged on a cirlce and all the chords drawn. Let I(n) be the number of intersection points inside the circle if no 3 chords are concurrent. Find a formula for I(n).

    asked on February 2, 2013
  46. math

    What is an example of a quintic polynomial function that has exactly four zeros?

    asked on January 28, 2013
  47. Physics

    How do I find the instantaneous acceleration of the earth orbiting the sun? Everything I am trying is incorrect. I am using 1 second as my time and get 1.99E-7 rads/second. First I tried: acceleration = theta x t / radius Where: theta = 1.99E-7 rads radius

    asked on October 23, 2012
  48. Physics

    Trying to find escape speed from a planet and I am given the radius and gravitational field - g = 18 m/s^2. I have the conservation of energy, final energy is zero, I have the formula for V = sqrt 2GM/r, u = mgy. I have too many unknowns...I can't solve

    asked on October 23, 2012
  49. physics

    A large air-filled rubber ball is tethered to the bottom of a swimming pool. The tension in the tether is 100N. The mass of the rubber in the ball itself is 2kg while pwater=1000kgm(-3) and pair=1.2 kgm(-3). What is the volume of the ball?

    asked on September 27, 2012
  50. business

    I am having problems understanding cost variance model; Can you give me a simplyfied formula to determine budgetary variance models? I have an example.

    asked on July 22, 2012
  51. math 121

    1. A college offers three different psycology . courses, four different history courses, and six different business courses. If a student is required to take one course in each of those three subjects, how many different ways are there for the student to

    asked on January 24, 2012
  52. math

    Given the following information, determine the sample size needed if the standard time estimate is to be within 5 percent of the true mean 99 percent of the time. Work Element Standard Deviation (minutes) Mean Observed Time (minutes) 1 0.20 1.10 2 0.10

    asked on December 3, 2011
  53. business writing

    I have to write a business letter, a memo and an e-mail on one document regarding human resources administrative assistant organizing seminar on sexual harrassment.

    asked on November 2, 2011
  54. geometry

    draw two points r and s then sketch rs add a point t on ray so that s is beetween r and t

    asked on October 20, 2011
  55. Algebra

    Maria bicycles 8km/h faster than Dennis. In the same time it takes Dennis to bicycle 33km, Maria can bicycle 37km. How fast does each bicyclist travel?

    asked on October 7, 2011
  56. chemistry

    a 52g piece of ice at 0 degree is added to a sample of water at 6 degree all the ice melts and the temp of the water decreases to 0 degrees how many grams of water were in the sample?

    asked on September 17, 2011
  57. History

    The biography of nelson mandela

    asked on September 11, 2011
  58. Geometry

    if a quadrilateral has both pair of base angles congruent---- can you prove that the shape is a trapezid

    asked on May 24, 2011
  59. Statistics

    Suppose that more than a decade ago high levels of lead in the blood put 81 percent of children at risk. A concerted effort was made to remove lead from the environment. Suppose, according to a survey, only 5 percent of children in the United States are at

    asked on April 17, 2011
  60. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g)/ 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond

    asked on January 15, 2011
  61. chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g 200.9 226.7 H2(g) 130.7 0 C2H6(g) -- -84.7 Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 If the value of the standard entropy change, ∆Sº for the reaction is

    asked on January 13, 2011
  62. Chemistry

    C2H2(g) + 2 H2(g)--> C2H6(g) Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 Calculate the value of the C C (triple bond) energy in C2H2 in kJ/mole.

    asked on January 11, 2011
  63. marketing

    Can someone please help me with this? I really just do not know where to start researching for the answer, where are some good places to look? Develop a research proposal in the form of a PowerPoint presentation of 8–15 slides. Your proposal should

    asked on December 11, 2010
  64. Honors Biology - URGENT!!!

    ATP is used to power the movement of your muscles as you turn the pages of a book. Where did the energy in the ATP come from? Trace the energy in the ATP molecule back to the sun.

    asked on December 8, 2010
  65. Childcare Mangment

    i have 2 questions 13. Following the nutritional label on a jar of peanut butter, you determine that 1 ounce of the peanut butter contains 115 calories and 9 grams of fat. What percent of the calories come from fat? A. 30 C. 70 B. 40 D. 80 i think is B 5.

    asked on December 7, 2010
  66. Chemistry

    How many lone pairs are on the central atom in BCl3

    asked on November 30, 2010
  67. psychology

    Consider the divied consciousness. Write 1-2 page discussing how hypnosis and meditation fosters health.

    asked on November 10, 2010
  68. catering

    when would you use a parchment frill

    asked on November 7, 2010
  69. Physical Science

    Explain why ionic compounds are formed when a metal from the left side of the periodic table reacts with a nonmetal from the right side. Give two examples of such compounds.

    asked on November 5, 2010
  70. AMath

    Write a polynomial function of minimum degree in standard form with real coefficients whose zeros include those listed 2, 3 and i.

    asked on October 27, 2010
  71. PSY 230

    Psy 230 Personal Narrative

    asked on June 21, 2010
  72. Medical Terminology

    The patient reports smoking three packs of cigarettes per month. She denies drug and alcohol use. This statement is an example of A. social history B. family history C. physical examination D. chief complaint

    asked on March 26, 2010
  73. Medical Terminology

    A 65-year-old patient has a murmur over the apex of the heart. What does the term apex represent? A. Tip B. Nearest the middle C. Front D. Back

    asked on March 26, 2010
  74. Medical Terminology

    A patient visits the doctor's office with abdominal pain of two days' duration. Medical history is significant for tonsillectomy and hypertension. The patient denies alcohol and drug abuse. The rectal examination confirms heme-negative stool. Impression:

    asked on March 26, 2010
  75. chemistry

    what is the pressure of H2 if the hydrogen gas collected occupies 14L at 300K and was produced upon reaction of 4.5 mol of Al?

    asked on March 14, 2010
  76. English Lit.

    How do you correctly add source card info to your report?

    asked on December 20, 2009
  77. Socials Studies

    1. What would be the modus operandi for john locke 2.John Locke's Major influence(Who did he admire and study) 3. John Locke's political views?

    asked on December 6, 2009
  78. Statistical Application

    What are the major differences between practical and statistical significance?

    asked on November 6, 2009
  79. statistics

    A researcher interested in relationships developed a questionnaire that measures the degree of affection adult men feel for their fathers. She has found that for the general population the distribution is skewed to the right, the mean degree of affection

    asked on November 4, 2009
  80. COM140

    Suggest two tips for creating academic documents not mentioned in the resource information. Which guidelines do you think are most important for formatting papers? Which guidelines appear less important to the message of a business document but more

    asked on September 2, 2009
  81. math

    Mark use 1pt. 9fl. oz. them 2pt. 10 fl oz from a container of film developer that hold 3qt. How much of the developer remains?

    asked on September 3, 2008
  82. science

    where in a angiosperm would you find the reproductive organs?

    asked on March 13, 2008
  83. Algebra 2

    I am trying to factor a 4th degree polynomial that does not have any rational roots. I need to somehow get it factored into two quadratics. Anyway know of a method to use. 3x^4 - 8x^3 - 5x^2 + 16x - 5

    asked on March 8, 2007
  84. Math

    Shopping centres X, Y and Z are such that Y is 12km south of X and Z is 15km from X, Z is on a bearing 330 from Y. Calculate the bearing of Z from X.

    asked on June 5, 2020
  85. Math

    There are six boys and four girls of equal ability trying out for four players school bowling team. How many teams will consist of two boys into girls? How many all boy teams can be formed?

    asked on December 16, 2019
  86. social studies

    how did monopolies hinder the free enterprise system.

    asked on June 13, 2018
  87. Math

    Find the ratio of the first number to the second number and simplify?

    asked on June 21, 2017
  88. Pre-Calculus

    If sinx=-1/2 and x terminates in the third quadrant, find the exact value of tan2x.

    asked on June 7, 2017
  89. statistics

    In a study of red/green color blindness, 850 men and 2500 women are randomly selected and tested. Among the men, 81 have red/green color blindness. Among the women, 5 have red/green color blindness. Test the claim that men have a higher rate of red/green

    asked on April 28, 2017
  90. Statistics

    Based on sq foot and home prices :Create an inferential statistics (hypothesis) test using the research question and two variables your learning team developed for the Week 2 Business Research Project Part 1 assignment. Include: The research question Mock

    asked on March 5, 2017
  91. Math

    Centimeter for grid, draw possible rectangles with 16 cm with lengths are whole centimeters po

    asked on January 25, 2017
  92. Algebra 6


    asked on January 16, 2017
  93. Math

    Two guy wires are attached to a cell tower. The first one is 15 ft long and at an angle of elevation on the ground of 55 degrees. The second wire is 22 ft long an angle of elevation on the ground of 63 degrees. Both wires secured same location on ground.

    asked on January 16, 2017
  94. math

    Rewrite the set Q by listing its elements. Make sure to use the appropriate set notation. Q={x|x is an integer and -4

    asked on January 5, 2017
  95. introduction to psychology i

    one advantage of using tests in research rather then laboratory observation is the usefulness of

    asked on December 13, 2016
  96. math

    A punch recipe calls for cups of 1 2/3 orange juice, cup of 3/4 pineapple juice, and cups of 1 1/2 mango juice. How many total cups of fruit juice does the recipe make?

    asked on November 20, 2016
  97. math

    A chord subtends an angle of 68 degrees at the center of a circle of radius 200mm.find the chord length.

    asked on June 21, 2016
  98. English

    Which sentence is appropriate should the word be launch or launching? Since the launching of phishing campaign, a number of staff along with yourself have been identified as clicking on multiple phishing links. Since the launch of phishing campaign, a

    asked on June 17, 2016
  99. math

    The equation y = 55x + 85 describes the amount of money a plumber charges, where y is the total amount he charges and x is the number of hours he works.

    asked on May 22, 2016
  100. Math

    I need help please. Add the opposite of -13 to the reciprocal of 9

    asked on May 12, 2016


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