# sharon

Most popular questions and responses by sharon
1. ## Chem

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

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

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

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

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

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

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

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

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

10. ## physics

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

11. ## Math Perimeter

Draw a figure with 22 units

12. ## algebra

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

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.

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

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?

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

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?

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

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

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

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

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

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

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

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

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

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

28. ## Chemistry

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

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

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?

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

32. ## algebra

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

33. ## Statistics

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

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.

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

36. ## science

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

37. ## 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

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

39. ## probability

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

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

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

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

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

44. ## L.O

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

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?

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.

47. ## 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:

48. ## CHEMISTRY

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

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.

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

51. ## ECE Home,School, and Community

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

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?

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

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

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?

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.

57. ## Chem

Bronsted reaction HCO3-+HF acid?+base?

58. ## Math Perimeter

Draw a figure with the given perimeter, 10 units.

59. ## 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) =

60. ## 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

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?

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

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!

64. ## chemistry

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

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

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.

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?

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

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.

70. ## 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

71. ## 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

72. ## 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?

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.

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

75. ## 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

76. ## 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?

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.

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

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?

80. ## 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

81. ## 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

82. ## 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?

83. ## 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

84. ## 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?

85. ## 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

86. ## 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

87. ## 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.

88. ## 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

89. ## 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

90. ## Understanding Perimeter

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

91. ## 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

92. ## 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:

93. ## 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):

94. ## 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?

95. ## 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

96. ## 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

97. ## geometry

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

98. ## 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