Most popular questions and responses by Sharon
  1. Chem

    Complete the Bronsted lowry reactions HPO42-+H+ HPO42-+OH-

    asked on February 21, 2014
  2. science

    First, you will investigate purely vertical motion. The kinematics equation for vertical motion (ignoring air resistance) is given by y(t)=y0+v0t−(1/2)gt2, where y0=0 is the initial position (which is 1.2 m above the ground due to the wheels of the

    asked on November 29, 2015
  3. Life orientation

    Assess the extent to which bad road use has a direct impact on physical,emotional,social ,economic aspect to family,community,country

    asked on August 27, 2015
  4. Life Span Development

    Question 1 1-The quality of a children’s attachments has been found to affect a-what children expect social interactions to be like. b-whether children remember positive or negative aspects of events better. c-children’s concepts of themselves. d-all

    asked on December 16, 2014
  5. chemistry

    The complete combustion of ethanol, C2H5OH (FW = 46.0 g/mol), proceeds as follows: C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(l) ΔH = −555 kJ What is the enthalpy change for combustion of 15.0 g of ethanol

    asked on October 22, 2015
  6. phyics

    Four cars undergo acceleration as described by the data in the following table. Car Initial Velocity (m/s) Final Velocity (m/s) Time period (s) A 2.0 11.0 3.0 B -5.0 3.0 2.0 C 1.0 -5.0 2.0 D 0.0 25.0 10.0 Rank the accelerations from most positive to most

    asked on September 12, 2015
  7. Chemistry

    Indicate how each of the following would affect the value of the absorbance (too high, too low, or not effect) of the indicated solution. I really need help. I do not understand these questions! This is from a chemistry activity to determine the unknown

    asked on February 28, 2012
  8. physics

    a car with a mass of 1.50 x 10^3 kg starts from rest and acceleration to a speed of 18.0 m/s in 12.0 s. Assume that the force of resistance remains constant at 400.0 N during this time. What is the average power developed by the cars engine

    asked on November 9, 2016
  9. statistics

    It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific

    asked on August 22, 2010
  10. physics

    if a swimmer swims 85.4 yards in five minutes, how many meters will he swim in 70.0 seconds?

    asked on September 8, 2013
  11. Math Perimeter

    Draw a figure with 22 units

    asked on February 25, 2013
  12. algebra

    name the property that justifies (-2.6) +7 = 7+(-2.6)

    asked on January 29, 2011
  13. psychology

    My instructor assign me of one the "senses." This the one my instructor had assign to me= “The Skin Senses”: Which includes Touch, Pressure, Temperature, and Pain. The instruction is to (Briefly describe how The Skin Senses work and its importance.

    asked on June 15, 2011
  14. chem

    If 20g of CaCo3is treated with 20gm of HCl how many grams of CO2 can be generated CaCO3+2HCl gives CaCl+H2O+CO2

    asked on September 29, 2015
  15. probability

    A batch of 350 raffle tickets contatins 4 winning tickets. You buy 4 tickets. What is the probability that you have: a.) No winning tickets? b.) All winning tickets? c.) At least one winning ticket? d.) At least one non-winning ticket?

    asked on October 7, 2009
  16. Chemistry!

    1. Write balanced equations for each of the following processes. a. Chromium- 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture. b. Iodine-131, used to treat hyperactive thyroid glands, decays by

    asked on January 27, 2011
  17. physics

    You are pushing a 30-kg wooden crate across the floor. The force of sliding friction on the cate is 90 N. How much force, in newtons, must you exert on the crate to keep it moving with constant velocity?

    asked on October 17, 2011
  18. finance

    computing checking account balance. based on the following information,determine the true balance in your checking account. balance in your checkbook-$356 balance on bank statement,$472 service charge and other fees, $15 interest earned on account $4 total

    asked on February 11, 2012
  19. Child Psychology

    I need help, could someone please check my answers to these five questions below. If I answered any that were wrong, please help me to identify the right answer. Thank you. 3. Even though her mother-in-law insists she is wrong, Danielle knows that which of

    asked on July 20, 2011
  20. Chemistry

    For a solution that is 0.20 M HCN(aq) with a Ka=4.9x10^-10 a. calculate the [H+] b. calculate the [OH-] c. what's the pH? Please show your work on how to solve it. Thank you

    asked on January 27, 2011
  21. buisness

    I need help please: Because Saudi Arabia and Australia have ____ in production of crude oil and petroleum products and wool respectively, Saudi Arabia can specialize in the production of crude oil and petroleum products, and Australia can specialize in the

    asked on February 11, 2012
  22. Chemistry

    If 0.630 grams of HNO3 (molecular weight 63.0) are placed in 1 liter of distilled water at 25 degrees C, what will be the pH of the solution? (Assume that the volume of the solution is unchanged by the addition of the HNO3.) A. 0.01 B. 0.1 C. 1 D. 2 E. 3

    asked on January 24, 2011
  23. Quantiative Methods

    Industrial Designs has been awarded a contract to design a label for a new wine produced by Lake View Winery. The Co estimates that 150 hours will be required to complete the project. The firm's three graphics designers available for assisgment to this

    asked on November 10, 2007
  24. Psychology

    If there is no conflict resolution in place, a career minded person must learn effective ways of resolving conflict in the workplace by becoming a better communicator and listening. These two steps are great preventive measures in conflict cases. Workers

    asked on October 23, 2011
  25. Pre-Calculus

    I need help with this problem: The bearing from the Pine Knob fire tower to the Colt Station fire tower is N 65 degrees E, and the two towers are 30 kilometers apart. A fire spotted by rangers in each tower has a bearing of N 80 degrees E from Pine Knob

    asked on April 2, 2008
  26. physics

    a force of 0.8N stretches an elastic spring by 2cm. find the force constant. f e = k=? f=ke 0.8=0.02 * k k=0.8/0.02 k=40N/m

    asked on May 11, 2017
  27. Chemistry

    How many moles of n2 are needed to react with 0.500 mol of lithium

    asked on October 7, 2010
  28. Chemistry; Please help

    Write formulas for the following. 1. potassium hexacyanoferrate(III) 2. sodium hexafluoroaluminate 3. Pentaaquabromomanganese(III) sulfate 4. hexaamminechromium(III) nitrate 5. sodium tetrahydroxochromate(III) 6.trans-dichlorobis(ethylenediamine)cobalt

    asked on January 26, 2011
  29. math

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

    asked on May 3, 2015
  30. probability

    The offices of president, vice president, seceretary, and treasurer for a club will be filled from a pool of 12 candidates. Five of them are members of the debate team. What is the probability that all the offices are filled by memebers of the debate team?

    asked on October 6, 2009
  31. physics

    an extreme skier starting from rest, coasts down a mountain that makes an angle 25.0¨¬with the horizontal. The coeffiecient of kinetic friction between her skis and the snow is 0.200. She coasts for a distance of 8.4m before coming to the edge of a

    asked on October 31, 2009
  32. algebra

    courtney walks three laps around a 1/4 mile track. How many feet does she walk? if 1mile = 5280ft

    asked on February 13, 2011
  33. Statistics

    If mean of 1, 2, 3, --------- n is 6n/11, then n is

    asked on July 27, 2011
  34. psychology

    Do I have the correct answer to this question? 1. The overarching Gestalt principle of perceptual organization is that of: is =D) similarity. A) complexity. B) simplicity. C) symmetry. D) similarity.

    asked on June 6, 2011
  35. english

    i have to take out embellishments, misquotations,false benefits and unethical tactics out of these sentence can some one help me 1. Storm damage done to water filtration plant #3 was mimimal. While we had to shut down temporily, servive resumed to meet

    asked on January 13, 2012
  36. Science in motion pHY 102

    Find the net force produced by a 30-N force and a 20-N force in each of these cases: (a) Both forces act in the same direction. The net force produced by 30-N force is 60-N The net force produced by 20-N force is 40=N Applied Forces Net Forces 30-N = 60-N

    asked on August 28, 2014
  37. science

    What is the pathaway and processes of ingestion involved when a person has eaten a buttered polony sandwish?

    asked on May 10, 2016
  38. life sciences

    Describe how the products of the light phase of photosynthesis are used to form a glucose molecule and how this molecule is then broken down in the cell of a plant to release energy

    asked on July 17, 2016
  39. probability

    How many ways can 12 people be seated about a round table?

    asked on October 8, 2009
  40. Healthcare Finance

    Jane Smith currently holds tax-exempt bonds of Good Samaritan Healthcare that pay 7 percent interest. She is in the 40 percent tax bracket. Her broker wants her to buy some Beverly Enterprises taxable bonds that will be issued next week. With all else the

    asked on September 13, 2013
  41. Chemistry

    1. Write balanced equations for each of the following processes. a. Chromium- 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture. b. Iodine-131, used to treat hyperactive thyroid glands, decays by

    asked on January 26, 2011
  42. Physics

    A 300 g bird flying along at 6.2 m/s sees a 10 g insect heading straight toward it with a speed of 27 m/s (as measured by an observer on the ground, not by the bird). The bird opens its mouth wide and enjoys a nice lunch. What is the bird's speed

    asked on March 28, 2011
  43. Quantiative Methods

    Western Family Steakhouse offers a variety of low-cost meals and quick service. Other than management, the steakhouse operates with two full-time employees who work 8 hours per day. The rest of the employees are part-time employees who are scheduled for 4

    asked on November 10, 2007
  44. L.O

    Critically discuss 5 ways in which in which xenophobia imapact on the community?

    asked on May 6, 2013
  45. math

    5 basketball teams are in a tournament and each team will play each other one time how many games will be played at the end?

    asked on October 10, 2010
  46. social studies

    What are some major differences between the ancient kingdom of Aksum and modern-day Ethiopia? Be sure to mention the geographic region and the names of both along with making at least three comparisons in your answer.

    asked on January 3, 2012

    The volume of air in a persons lungs is 615 mL at a pressure of 760 mmHG inhalation occures at the pressure in the lungs drops to 752 mmHG, to wha volume did the lungs expand I got 615*760=V2*752=621 i keep getting 621 and the answer is 620 what i'am i

    asked on July 24, 2011
  48. math STEVE

    Mr. Corbin is a salesman. He gets a 5% commission on all sales between $100 and $500 and a 10% commission on all sales above $500. His commission on sales of $783 was:

    asked on August 19, 2014
  49. math

    1. Mr. Corbin is a salesman. He gets a 5% commission on all sales between $100 and $500 and a 10% commission on sales of $783 was: 2. Of the students who tried out for the baseball team, 1/8 tried out as catchers, 1/3 as infielders, and 1/4 as outfielders.

    asked on August 19, 2014
  50. math

    Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 ½ hours. How quickly can all three fill the pool together? A. 12 minutes B. 15 minutes C. 21 minutes D. 23 minutes E. 28

    asked on March 19, 2009
  51. ECE Home,School, and Community

    Describe three issues related to role confusion that a teacher may feel or communicate

    asked on October 23, 2010
  52. Microbiology

    . If you counted 20 colonies from a 0.01-ml inoculum of a 1:10 dilution of urine, how many organisms per milliliter of specimen would you report? Is this number significant?

    asked on January 16, 2018
  53. Physics

    A pulley system has a velocity ratio of 4 and an efficiency of 80%.calculate the value of the effort required to raise the load of 480N

    asked on February 11, 2016
  54. MATH(HELP)

    The ratio of guppies to angelfish in a shop was 2:3. The number of angelfish was 2/3 the number of gold fish. The shoe keeper decided to replace 1/4 of the guppies with some angelfish. The number of angelfish she added was equal to the number of the

    asked on August 7, 2014
  55. Chemistry

    What is the percentage yield for a reaction if you predicted the formation of 21 grams of C6H12 and actually recovered only 3.8 grams?

    asked on March 8, 2015
  56. statistics

    When a parachute is inspected, the inspector is looking for anything that might indicate the parachute might not open. - State the null and alternative hypotheses for this situation.

    asked on January 19, 2018
  57. Chem

    Bronsted reaction HCO3-+HF acid?+base?

    asked on February 21, 2014
  58. statistics

    A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are randomly selected, one at a time, with replacement, and x is the number of defectives in the sample of two. Explain why x is a binomial random variable. & For the

    asked on December 26, 2017
  59. Math Perimeter

    Draw a figure with the given perimeter, 10 units.

    asked on February 25, 2013
  60. Early Childhood Psychology

    Can someone please let me know if I chosen the right answers for my six questions below? If I did not choose the right answers could you please let me know which answer is the correct one? Thanks 1) In Piaget's theory, a symbol is closest to a(n) =

    asked on July 29, 2011
  61. math

    Ahmed earns $1.50 for every video game he sells. When he sells one carton of 30 video game, he earns an additional $10. What is the minimum number of video games he has to sell in order to earn $450?

    asked on August 6, 2014
  62. maths

    y is 60km away from x on a bearing of 135 degree.Z is 80km away from x on a bearing of 225 degree find (a)distance of z from y (b) bearing of z from y

    asked on February 24, 2019
  63. English 12

    this question is based on the epic of gilgamesh. How important is Enkidu's role in the battle with Humbaba? please don't post links to sites..I checked everywhere already!

    asked on December 17, 2007
  64. chemistry

    What hybrid orbitals are used by nitrogen in the following species a) NH3 b) H2N-NH2 c) NO3

    asked on December 1, 2011
  65. business calculas

    An apple orchard has an average yield of 38 bushels of apples/tree if the density is 24 trees/acre. For each unit increase in tree density, the yield decreases by 2 bushels. Letting x denote the number of trees beyond 24/acre, find a function in x that

    asked on September 13, 2007
  66. Chemistry

    Refer to the net ionic equation below to answer the following questions: Co(H2O)6^+2 + 4Cl- CoCl^-2 + 6H2O 1. In what direction was the equilibrium shifted by: a. Addition of HCl b. Addition of water c. Addition of AgNO3 d. Increasing the temperature e.

    asked on January 21, 2011
  67. probability

    A box contains 4 red and 3 blue poker chips. What is the probability when 3 are selected randomly that all 3 wil be red if we select chips with replacement? a.) Without replacement?

    asked on October 6, 2009
  68. Science

    DNA can copy itself easier than RNA because? A. its a double helix B. polymer of nucleotide C. its confined to nucleus D.its supported by histone proteins I have no idea

    asked on February 17, 2016
  69. statistics

    According to American Airlines, Flight 215 from Orlando to Los Angeles is on time 90% of the time. Suppose 150 flights are randomly selected. Find the probability that few than 125 flights are on time.

    asked on October 22, 2012
  70. probability

    If a box contains 4 red poker chips and 3 blue. What is the probability that all 3 will be red if we randomly select each chip with replacement? Woould it be 4/7*4/7*4/7 because there are 4 red or would it 3/7* 3/7*3/7 because they only want 3 of the 4?

    asked on October 8, 2009
  71. Intro to Computers

    your brother just lost his job and wants to build an online profile with a social media site geared at possible employers and HR recruiters. He asks you if you have a suggestion as to where to go. what do you tell him? A. WordPress B. LinkedIn C. Facebook

    asked on April 7, 2014
  72. Chemistry

    The boiling point elevationof an aqueous sucrose solution is found to be 0.39 degrees Celsius. What mass of sucrose (molar mass=342.30g/mol) is contained in 500g of the solution? Kb (water)=0.512degrees C/m

    asked on November 8, 2010
  73. Principles of Accounting

    Secret Trails received payment in full within the credit period for horse boarding for $900 plus 6% sales tax. terms of the sale were 2/10, n/30. which entry is required to record this payment? a. Debit Cash, $900; credit accounts receivable sales $900 b.

    asked on June 1, 2014
  74. Physics

    A 1.500m long uniform beam of mass 30.00 kg is supported by a wire as shown in the figure. The beam makes an angle of 10.00 degrees with the horizontal and the wire makes and angle of 30.00 degrees with the beam. A 50.00 kg mass, m, is attached to the end

    asked on November 15, 2012
  75. Algebra

    A reduced fat cookie contains 12g of fat per serving. In order for food to be termed reduced fat it must have at least 20% less fat than the regular item. What can you conclude about how much fat is in a serving of the regular cookie?

    asked on March 9, 2012
  76. Algebra II

    A store sells rings with birthstones selected from the 12 different months of the year. The stones are arranged in a row. Part A: Mary wants a ring with a topaz, a sapphire, and a ruby set in a line. Write and evaluate an expression to show how many ways

    asked on May 27, 2012
  77. geometry

    If four angles of a convex pentagon measure 120°, 93°, 108°, and 101°, find the measure of the fifth angle. Show equations and work that lead to your answer.

    asked on January 7, 2012
  78. Child Psychology

    I need someone to check my answers, to make sure that I have answered them correctly. My answers are marked with xxxx next to my choice out of the four choices. 1. Edwin is doing his doctoral work in the area of gifted education. One of the major

    asked on July 14, 2011
  79. probability

    A pizza shop offers nine toppings. No topping is used more than once. What is the probability that the toppings are pepperoni, onions, olives, and mushrooms?

    asked on October 8, 2009
  80. Finance

    Caluating opportunity cost. what is the annual opportunity cost of a checking account that requires a $500 minimum balance to avoid service charges? Assume an interest rate of 3 percent

    asked on February 11, 2012
  81. Chemistry

    1. Write balanced equations for each of the following processes. a. Chromium- 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture. b. Iodine-131, used to treat hyperactive thyroid glands, decays by

    asked on February 17, 2011
  82. Middle Childhood Psychology

    Could someone please check my answers to make sure that they are correct. If any of my answers are wrong, please provide me with the correct answer? Thank you! 1. Marabella knows that a given amount of spaghetti remains the same whether the spaghetti is in

    asked on July 29, 2011
  83. health

    How are the data elements contained in the HIPAA 837 claim form similar to the CMS-1500, and how does each form relate to the claims process? In your opinion, do the similarities between HIPAA 837 and CMS-1500 complicate or simplify the claims process?

    asked on July 10, 2009
  84. Statistics

    The same supervisor in the scenario above agreed to increase the salary of the employee to $15.00 per hour once she passed her RHIT exam. Three months after beginning her employment , the employee passed her RHI exam. What will the new budget be for salary

    asked on October 23, 2015
  85. Math

    Ms. Fisher is using 64 carpet tiles to make a reading area in her classroom. Each tile is square that measures 1 foot by 1 foot. What is.the length and width of the rectangular area she can make with the smallest possible perimeter?

    asked on February 27, 2014
  86. Finance

    The yield curve is typically _____________, meaning that the annualized interest is higher for debt securities with longer terms to maturity. A. Upward B. vertical C. Downward D. Horizontal

    asked on October 26, 2013
  87. Science

    Identify cliamte and topographical factors that(a)intensify air pollution and (b) help reduced air polluction. What sources of water pollution can you identify? How are people and the environment affected by the physical and economic effects of the air and

    asked on March 14, 2007
  88. statistics

    Suppose a box of marbles contains an equal number of red marbles and yellow marbles but twice as amny green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilitites to the elements.

    asked on September 24, 2009
  89. psychology

    I chose the answer that I believe to be correct. I need help from an expert to indicate if the answers that I chose are right or wrong answers and indicate the correct letter or answer needed. Question 1 1. Counselors use Bronfenbrenners model most

    asked on October 15, 2014
  90. MATH(HELP)

    The ratio of guppies to angelfish in a shop was 2:3. The number of angelfish was 2/3 the number of gold fish. The shopkeeper decided to replace 1/4 of the guppies with some angelfish. The number of angelfish in the end. How many guppies were in the shop in

    asked on August 7, 2014
  91. Understanding Perimeter

    When finding the perimeter of a figure on a grid, why do you not count the spaces inside the grid?

    asked on February 25, 2013
  92. medical records

    Compare cost control strategies of employer-sponsored (employers buy from insurance companies) to self-funded (employers cover costs of benefits) health plans. Include the following factors: Riders Enrollment periods Provider networks Third party

    asked on July 27, 2009
  93. math

    On a plane trip, baggage over 41 pounds is charged at the rate per pound of 1% of the one-way fare. The charge for a bag weighing 52 pounds on a trip where the one-way fare is $98 is:

    asked on August 7, 2014
  94. statistics

    If GMAT scores for applicants at Oxnard Graduate School of Business are N(500, 50) then the top 5 percent of the applicants would have a score of at least (choose the nearest integer):

    asked on October 27, 2013
  95. probability

    A batch of 350 raffle tickets contains 4 winning tickets. You buy 4 tickets. What is the probability you have no winning tickets? b.) all winning tickets? c.) at least 1 winning ticket? d.) At least 1 non-winning ticket?

    asked on October 6, 2009
  96. Math

    You are skier A, the first skier in a skiing event with three other skiers. Compared to your time, skier B is slower, by a time of +00:28. Skier C has a time of +2:13, and skier D has a time of -01:24. 1. Who is the fastest skier? 2. Since all times are

    asked on October 12, 2016
  97. college physics

    An ultrasonic motion sensor sends very short pulses for ultrasound to measure the distance to an object . The sensor cannot send another pulse until the echo form the previous pulse is detected. What is the maximum possible number of individual

    asked on June 19, 2014
  98. geometry

    Find the length of the diagonals of the isosceles trapezoid if AC = x + 1 and DB = 2x - 3

    asked on January 15, 2012
  99. Geometry

    You have purchased a scale model of a car. The scale factor is 1:24. The model is 2.9 inches high, 2.75 inches wide, and 6.4 inches long. Find the dimensions of the car in feet. If the rear cargo area of the actual car has a volume of 12.5 cubic feet, what

    asked on May 13, 2011
  100. Algebra

    If an object is thrown upward with an initial velocity of 96 feet/sec, it's height after t sec is given by h=96t-16t^2. Find the number of seconds before the object hits the ground.

    asked on July 30, 2010


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