Popular questions and responses by Wendy
  1. Chem

    A flexible container at an initial volume of 5.12 L contains 7.51 mol of gas. More gas is then added to the container until it reaches a final volume of 18.3 L. Assuming the pressure and temperature of the gas remain constant, calculate the number of moles

    asked on December 10, 2014

    1) Which of these is a rational number? a. Pi b. Square root 3 ****** c. Square root 2 d. 1.3 (the # 3 has a line at the top) 2) Which of the following sets contains 3 irrational numbers? a. Square root 120 , n , Square root 3 ****** b. - Square root 256 ,

    asked on February 10, 2014
  3. Cybersafety and Photo Management ~CHECK MY WORK~

    1) Which term, as it relates to the Internet, means to act in an unthinking, unsafe, or disrespectful manner online? a. Irresponsible behavior b. Moderate-risk behavior ****** c. Low-risk behavior d. Responsible Behavior 2) Caley took a bunch of pictures

    asked on February 10, 2014
  4. Math

    The sum of multiples of 6 between 6 & 999? I got 83166, but my answer key says 82665.. Is my answer wrong? I used the term formula to find 166 terms multiples of 6, and then the sum formula to get 83166.

    asked on January 20, 2015
  5. Algebra 2

    the test score for a math class are shown below. 81,84,82,93,81,85,95,89,86,94 what are the mean, median, and mode of the data set?

    asked on May 19, 2014
  6. math

    Answer each question about the following series: 3 + 4.5 + 6 + 7.5 + 9 + 10.5. What is the common difference of the arithmetic sequence on which the series is based? d =

    asked on April 3, 2019
  7. Algebra/Math

    The difference of two numbers is 29. If five times the smaller number is twice the larger, the result will be one. What is the larger number ? Please help.. I need an answer in 10 days. Thank you, much appreciations.

    asked on April 15, 2016
  8. stats

    Assume that​ women's heights are normally distributed with a mean given by mu equals 63.4 in​, and a standard deviation given by sigma equals 1.8 in. Complete parts a and b. a. If 1 woman is randomly​ selected, find the probability that her height is

    asked on July 28, 2018
  9. English

    I am stuck on these two questions(can you check #1 one over for me?)! For the poem Annabel Lee; 1. What romanticized explanation does the speaker give for the death of his love, Annabel Lee? He tells us that angels from heaven were jealous of their love

    asked on May 25, 2015
  10. Chemistry

    Adding helium to a balloon increased its volume from 360.9 mL to 3.532 L. If the final number of moles of helium in the balloon is 22.3 mol, what was the initial number of moles of helium in the balloon? Assume the balloon contained only helium initially.

    asked on December 10, 2014
  11. Principles of Accounting

    E2-2 Selected transactions for D. Reyes, Inc., an interior decorating firm, in its first month of business, are as follows. Jan. 2 Invested $10,000 cash in the business in exchange for common stock. 3 Purchased used car for $4,000 cash for use in business.

    asked on January 21, 2010
  12. Math( Attn: Reiny)

    1. A rental business charges $12 per canoe and averages 36 rentals a day. For every 50-cent increase in rental price, it will lose two rentals a day. What price would yield the maximun revenue? I was told the answer by Reiny, but I couldn't get the right

    asked on January 25, 2015
  13. Biology

    In lactic acid fermentation, ______ is _______ a) lactate...oxidized b) pyruvate...reduced c) ethanol...oxidized d) NAD+...oxidized e) NADH...reduced

    asked on April 28, 2013
  14. music appreciation

    Clara Wieck Schumann's "Forward" was written for a/an?

    asked on February 21, 2012
  15. chemistry

    ihave two solutions. in the first solution , 1.0 moles of sodium chloride is disslved to make 1.0 liters of solution . in the second one, 1.0 moles of sodium chlorine is added to 1.0 liters of water.is the molarity of each solution the same?

    asked on February 13, 2012
  16. Maths

    The 10th term of an a.p is -27 and the 5th term is -12 what is the 18th term? Find also the sum of its 25 term

    asked on January 26, 2020
  17. economics

    Can South Africa afford to have totally free trade with the rest of the world?

    asked on May 8, 2019
  18. Chemistry

    The reaction are free radicals what are the product... 1)CH3-CH2-CH2 +CH3-CH2CH3 2)CH3-CH2-CH3 +CH3-CH-CH3 3)CH3-CH2-CH2 +CH3-CH-CH3 4)H+H

    asked on November 22, 2018
  19. Chemistry

    Given that 4NH3+5O2-4NO+6H2O ΔH= -906kJ. What is the Enthalpy change for NO +3/2H2O - NH3 +5/2 O2

    asked on August 28, 2018
  20. math

    The Gallup Poll uses a procedure called random digit dialing, which creates phone numbers based on a list of all area codes in America in conjunction with the associated number of residential households in each area code. Give a possible reason the Gallup

    asked on January 10, 2017
  21. math

    building A is 180 feet shorter than building B. The total height of the two building is1480 feet. find the length of each building

    asked on March 20, 2015
  22. chemistry

    What physical property of water and HCl allows us to separate them from the zinc chlorine compound produced in the reaction?

    asked on February 5, 2015
  23. physics

    (a) Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.490 kg·m2. (b) He reduces his rate of spin (his angular velocity) by extending his arms and increasing his moment of inertia. Find the value of his

    asked on July 17, 2013
  24. international business

    are retail investors or traders permitted to naked short a stock? Who is permitted to naked short a stock assuming there has been no suspension of this practice. following the sec suspension of naked shorting post june 2008 did other nations follw this

    asked on May 30, 2012
  25. Chemistry

    a. Exactly 4.000 mol of NH3 is burned in a constant volume (bomb) calorimeter immersed into 100.0kg of water. The temperature of water increases by 3.619 degrees C after the reaction. Calculate the heat released by the reaction. Neglect the heat capacity

    asked on March 18, 2012
  26. Physical Science

    When aqueous solutions of Na2CO3 and BaCl2 are mixed, the products are NaCl and?

    asked on April 3, 2011
  27. math

    Solve by elimination 8x-9y=8.5 7y-2x=-4.5

    asked on July 11, 2010
  28. Chemistry

    Nitroglycerin C3H5(NO3)2 is a common explosive which decomposes according to the equation. 4C3H5(NO3)2 - 12CO2 + 10H2O + O2 +6N2 ΔH= -5.720*10^3 KJ. Calculate the heat for the decomposition for the 10.6g of the Nitroglycerin.

    asked on August 28, 2018
  29. Science

    Ascorbic C3H7O4COOH,also known as VitaminC, is an essential Vitamin for all mammals. Among mammals, only humans, monkeys and guinea pigs cannot synthesis it in their bodies LA for ascorbic acid is 7.9*10^-5. Calculate [H3O+] and pH in a 0.110M solution of

    asked on August 26, 2018
  30. Science

    Find out the energy of emitted photon when an electron in Li2+ ion returns to its ground state from n=2 level.

    asked on August 21, 2018
  31. Chemistry

    How much heat is required to warm 122g of water by 23.0°C? Specific heat is 4.184 J/g° C. Please show work:(((

    asked on May 18, 2018
  32. Health

    Blood also passes through the small intestine and liver during which type of circulation pulmonary renal portal*** cardiac

    asked on May 26, 2016
  33. Math/Physics

    I am unsure of what exactly I am looking for in this problem... One of the highlights of the Calaveras Fair, besides the bullfrog jumping contest, is the watermelon seed spitting contest. The seed spitting is being done in the direction of s ⃗=5i ⃗+j

    asked on February 22, 2016
  34. Math

    Explain how you could use a map to estimate the actual distance between Miami, Florida, and Atlanta, Georgia.

    asked on November 30, 2015
  35. English

    Another question regarding the poem Annabel Lee. Can you check my response for me and help me elaborate on the rhythm explanation please; 1. What is the overall tone of the poem? How does the rhythm of the poem affect the tone? my ans: The tone of the poem

    asked on May 25, 2015
  36. English

    I have an essay and my topic is "our views of the past change as we mature". So I am stuck on what pieces of evidence I should write about. I am thinking of writing a narrative, and I want my "mature view" to be that the world doesn't evolve around me

    asked on January 19, 2015
  37. chemistry

    3Cl2 +6KOH->KClO3 +5KCl =3H2O write a conversion factor that could be used to convert between moles od potassium hydroxide and moles of potassium chlorate

    asked on November 5, 2014
  38. CRJ

    Which of the following is a "tendency to behave in certain ways in certain circumstances?" Question 5 options: Character trait Virtue Vice All of the above

    asked on July 27, 2014
  39. trg

    cot (pi/12)

    asked on April 29, 2013
  40. Pre-Algebra

    Complete the sentence below. Scatter plots are used to look for a pattern of association, or trend, between ____________ A) one set of values. B) two sets of values. C) three sets of values. D) four sets of values. My Answer: B) two sets of values.

    asked on March 25, 2013
  41. Chemistry

    A 6.00 ft cylinder has a radius of 26 in. It contains 189 lb of helium at 25 celsius. Express the volume of the cylinder (V=ðr²h) in liters, the amount of helium in moles and the temperature in Kelvin.

    asked on September 27, 2012
  42. Chemistry

    What is the empirical formula for a compound which contains 67.1 percent zinc and the rest is oxygen

    asked on January 23, 2012
  43. chemistry

    a bottle of 12.o M HCL has only 49.8 ml left in it. What is the molarity of the hcl if the solution is diluted to 350ml.

    asked on October 14, 2011
  44. Chemistry

    Calculate the mass in grams for a gold sample that absorbs 245J to change its temperature from 19 degrees to 49 degrees

    asked on March 5, 2011
  45. science

    what is the electrical output of a wind turbine with a diameter of 25metres when the wind speed is 10 metres per second?

    asked on January 6, 2011
  46. economics

    Which economic system is used to handle a crisis of epic proportions, such as natural disaster?

    asked on July 10, 2010
  47. Psychology

    Where can I find information on how our culture, defines our relationships?

    asked on May 17, 2010
  48. geometry

    Ray QS is the angle bisector of angle pqr. Pqr has a bisecotor qs and angle pqs is 40 degrees. What would be the two angle measures not given in the diagram?

    asked on August 31, 2011
  49. Finance

    An AT&T bond has 10 years until maturity, a coupon rate of 8 percent, and sells for $1,100. a. What is the current yield on the bond? b. What is the yield to maturity?

    asked on October 18, 2007
  50. Mathematics

    In a class,30 offer Biology,21 offer Chemistry and 22 offer Physics.15 offer Physics and Biology,10 offer Physics and Chemistry and 13 offer Biology and Chemistry.2 offer Physics only,3 offer Chemistry only and 7 offer Biology only. a.illustrate this

    asked on May 12, 2020
  51. Algebra

    The length of a rectangle is twice the width. If the area is 64^2cm, find the dimensions of the rectangle. Use the table or a calculator if necessary. Round to the nearest hundredths. I do not know how to set the problem up. Thank you for your help.

    asked on May 5, 2020
  52. Math

    The lemonade stand sells cone-shaped cups of lemonade for $0.25 each .How will it cost you to fill the thermos of lemonade you chose in par a

    asked on April 27, 2020
  53. math

    Let R be the region bounded between the plane z = 1 and the cone z = 2 − p x 2 + y 2 . Describe region R using spherical coordinate

    asked on August 18, 2019
  54. Math

    mr. kebu spends 1/8 of his monthly salary in school fees and a third of the remainder on rent. he spends 3/4 of what remained after paying school fees and rent on food. if he remains with 1470 calculate his monthly salary

    asked on April 12, 2019
  55. Physics

    An electric motor is used to lift a load of bricks through a vertical height of 20m.the tension in the cable attached to the electric motor is 2000N.calculate work done by the electric motor on the bricks

    asked on March 18, 2019
  56. Pre-Calc

    Sock Drawer had 10 white socks and 4 black socks. List and count possible combinations: 1) of two socks, if order matters 2) of two socks, if order doesn't matter 3) of three socks, if order matters 4) of three socks, if order doesn't matter

    asked on October 25, 2018
  57. Chemistry

    Some plants require acidic soils for healthy growth. Which of the following could be added to soil around such plants to increase the acidity of the soil? 1.iron(ii)sulphate 2. sodium sulphate 3.aluminum sulphate 4.iron(iii)sulphate 5.caesium sulphate.

    asked on August 13, 2018
  58. Chemistry

    Calculate hydroxyl ion concentration, ph and the percent hydrolysis for 0.1M solution of sodium cyanide (hints know for cyanide ion is 2.5*10^-5).

    asked on August 13, 2018
  59. Chemistry

    Determine the vapour pressure lowering at 25 degree Celsius of 1.25molality sucrose solution assume the solution behaves ideally (sucrose is C12H22O11). The vapour pressure of pure water at 25 degrees Celsius is 23.8torr ( hint 50.0g of sucrose was used).

    asked on August 13, 2018
  60. Chemistry

    The density of a 15.00% by mass aqeous solution of acetic acid is 1.0181g/mL What(i)the molarity (ii)molality (iii) the mole fraction of each component?

    asked on August 13, 2018
  61. Chemistry

    What must be a concentration of benzoate ion in a 0.55M benzoic acid solution so that the ph is 5.00?

    asked on August 13, 2018
  62. I love math science

    Label all the part of speech in the sentence

    asked on January 29, 2018
  63. math

    Naya has a number riddle for you to solve: The number has two digits, it is less than 40, you say it when you count by fives and the sum of the digits is 25.

    asked on November 28, 2017
  64. chemistry


    asked on August 23, 2017
  65. chemistry

    1,2 of carbon combined with 0,1 grams of hydrogen to form a compound . a.FIND THE EMPIRICAL FORMULA OF A COMPOUND b.ITS Mr WAS FOUND TO BE 78 ,FIND THE MOLECULAR FORMULA

    asked on August 23, 2017
  66. stats

    Suppose we had two families, where Family A included 5 children and Family B included only 1 child. If we randomly chose a child from the families, what is the probability that the child came from Family A?

    asked on January 12, 2017
  67. Calculus

    Thank you - (Enter your answers using interval notation. If an answer does not exist, enter DNE.) y = 4x + [5/sin x], (−π, π) concave upward (x,y)- concave downward (x,y)-

    asked on September 28, 2016
  68. Pre-cal

    Solving the principle values of x of the equation 4cos^2x-3=0

    asked on May 25, 2016
  69. Life science, Life science and History

    I want to be a doctor (immunologist) I'm not sure about the last subject should it be history or Geography

    asked on May 13, 2016
  70. helpppp

    Write an equation of the line passing through (3,21)and (-4,-35) in the form of A x + B y = C. Where A, B and C are real numbers

    asked on April 26, 2016
  71. algebra

    A national home improvement store's revenue y (in millions of dollars) during the years from 1996 to 2007 is given by the equation y=15x+55 where x is the number of years after 1996. a)Use the equation above or a graph of the equation to complete the

    asked on April 26, 2016

    The fourth month this year, you have $368 saved. At the twelfth month this year, you have saved $504. What is your savings rate?

    asked on April 25, 2016
  73. algebra HELP PLEASE

    A city is considering building a commuter train. The steepest section of track has a fall of 72.8 feet for a horizontal distance of 280 feet. What is the grade of this section of track? The downgrade of this section of track as a reduced fraction is?

    asked on April 21, 2016
  74. math

    A is 100m away from headquarters. B is 8m away from headquarters. A runs twice as fast as B. How far away from headquarters will B be when A arrives at headquarters. I drew a number line and did a jump of 16 for A and a jump of 8 for B. This brings A to

    asked on April 16, 2016
  75. algebra

    A local salesman receives a base salary of $900 monthly. He also receives a commission of 7% on all sales over $1000. How much would he have to sell in a month if he needed to have a monthly income of $2900?

    asked on April 12, 2016
  76. math

    We are planning a reception for our daughter. The hall that we are renting charges a $70 cleanup fee. In addition to the cleanup fee, they charge $28 per guest for food and drinks. If we have $1,800.00 available, what is the maximum number of guest we can

    asked on April 11, 2016
  77. Math

    Wendell is making punch for a party. the recipe he is using says to mix 4 cups pineapple juice, 8 cups orange juice, and 12 cups lemon-lime soda in order to make 18 servings of punch. a. How many cups of punch does the recipe make? b. if Wendell makes 108

    asked on November 23, 2015
  78. Math

    You score 15,16,17,14, and 19 points out of 20 possible points on five tests. what must you score on the sixth test to have of at least 16 points?

    asked on November 11, 2015
  79. Math

    Mr. Lee invested some money. Lost 4% in a stock and gained 3.2% in a bond. Overall he lost 11.2$. If he invested the amount in the stock to the bond vice versa, then he wouldve gained $3.2, how much is in the bond and how much is in the stock? I am so

    asked on May 26, 2015
  80. Chemistry

    I posted this question earlier but the person that answered did not include how to find the moles of the problem When 80.0 mL of HCl is added to 80.0 mL of NH3OH, the temperature increases 2.5 celsius. Assuming the final solution has the same specific heat

    asked on February 22, 2015
  81. Chemistry

    When 80.0 mL of HCl is added to 80.0 mL of NH3OH, the temperature increases 2.5 celsius. Assuming the final solution has the same specific heat capacity as liquid water, the heat produced in the reaction between two solutions is: I don't know how to find

    asked on February 22, 2015
  82. Chemistry

    When 80.0 mL of HCl is added to 80.0 mL of NH3OH, the temperature increases 2.5 celsius. Assuming the final solution has the same specific heat capacity as liquid water, the heat produced in the reaction between two solutions is: I don't get how to find

    asked on February 22, 2015
  83. chemistry

    What will be the final temperature of 650 g of water initially at 5.5°C if it is heated by burning 7.5 g of carbon to carbon dioxide. The molar heat of reaction is -393.5 kJ/mol. I do not understand how to do this question

    asked on February 16, 2015
  84. Math

    1. If the point (-3,30) is on the graph y=(x-1)^2+14, where will the point be on y=(x-8)^2-6? I don't understand what this is asking and how I can find this. 2. A rental business charges $12 per canoe and averages 36 rentals a day. For every 50-cent

    asked on January 25, 2015
  85. Math

    Which decimal value is equivalent to 7/11? _ __ _ A. 0.63 B. 0.63 C. 0.675 D. 0.7 "B" is what I chose.

    asked on December 11, 2014
  86. Physics

    A vector representing 170 N is oriented at 30 degrees with the horizontal. What is the magnitude of its horizontal component? Answer in units of N.

    asked on November 2, 2014
  87. AP Physics

    A jogger runs in a straight line with an average velocity of 7.7 m/s for 4.5 minutes, and then with an average velocity of 2.8 m/s for 2.8 minutes. What is her total displacement? Answer in units of m.

    asked on September 4, 2014
  88. Social Studies--Check My 1 Answers Please--

    What was "Manifest Destiny"? a. the idea that Americans of European descent were superior to Native Americans b. the idea that woman were destined to attain political equality with men c. the idea that America was destined to expand to cover the entire

    asked on February 26, 2014
  89. chemistry

    The density of gold is 19.31g/cm3 and the density of platinum is 21.43 g/cm3. If equal masses of gold and platinum are transferred to equal volumes of water in separate graduated cylinders which graduated cylinder would have greatest volume change

    asked on February 19, 2014
  90. Math ~ Check Answers ~

    Which best names the quantity 1/2 in the linear equation shown? y = -2x + 1/2 a.) The y-intercept ******** b.) The slope c.) The dependent variable d.) The x-intercept Kevin plotted a linear equation on a graph with 18 as the y-intercept. Which of

    asked on February 19, 2014
  91. Science ~CHECK MY WORK PLEASE~

    Felipe made a toy boat out of clay, but it kept sinking in water. He changed the boat's design by making it slightly wider than before. Why did Felipe's newly designed boat float on water? A. He decreased the density by increasing the volume. B. He

    asked on January 28, 2014
  92. Science ~CHECK MY WORK PLEASE~

    Both carbon dioxide and water are pure substances. How are they similar to each other? A.) both substances have a set ratio of atoms that cannot be separated by physical means. B.) both substances have a set ratio of atoms that can be separated by physical

    asked on January 28, 2014
  93. Math

    Triangle ABC has coordinates A(1,4); B(3, -2); and C(4, 2). Find the coordinates of the image A'B'C' after a reflection over the x-axis.

    asked on November 6, 2013
  94. physics

    A 1.80 m radius playground merry-go-round has a mass of 120 kg and is rotating with an angular velocity of 0.300 rev/s. What is its angular velocity after a 22.0 kg child gets onto it by grabbing its outer edge? The child is initially at rest.

    asked on July 17, 2013
  95. economics

    what is the south african government providing to whom?

    asked on May 19, 2013
  96. Marketing

    1. How should Cathay develop and market its global im-age without diminishing its local/regional identity as the Hongkong (and China) carrier? 2. Should cathay focus on China by attempting to develop it further or instead focus on the overall global

    asked on April 15, 2013
  97. Social Studies

    1) Which U.S. region has the smallest states by land area? a. West b. Midwest c. Northeast d. South My Answer: 1) C NORTHEAST

    asked on March 11, 2013
  98. finance

    describe the difference between the substance and form of financial statements and give an example of each

    asked on January 29, 2013
  99. world history

    A key technological development that began around 500 B.C.E. in sub-Saharan Africa was ?

    asked on September 10, 2012
  100. Chemistry

    how many moles of silver nitrate are required to react with 24.8 mL of 1.15M calcium chloride in a metathesis reaction Thanks!

    asked on April 23, 2012


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