Questions Asked on
March 3, 2018

  1. Chemistry

    What is the total molar concentration of all the ions in 0.0200 M solutions of the following salts in water? 0.0200 M KCl 0.0200 M CuSO4 0.0200 M CaCl2

    asked by Naomi
  2. physics

    An electron experiences an electric force of 0.70 nN . What’s the field strength at its location?

    asked by a
  3. Chemistry

    Lactic acid, a chemical responsible for muscle fatigue, is a monoprotic acid. When 0.578 g of lactic acid is titrated with 0.206 M NaOH, a volume of 31.11 mL of NaOH is used. What is the molar mass of lactic acid? HA + NaOH > NaA + H2O (also does the A

    asked by Naomi
  4. Social Studies

    Which of the following was among President Wilson’s Fourteen Points? A disarm all major powers B form a league of nations ** C create an alliance with Germany D make all European country learn their lesson What was the main purpose of President

    asked by Cole
  5. New Mexico History

    1. Based on the changes in New Mexico's population after World War II, which conclusion is supported? A.) Economic changes made new mexico a difficult place to make a living B.) New mexico climate was believed to be dangerous and unhealthy C.) people were

    asked by Anonymous
  6. Math

    There is 48 students in a class. 7 out of 8 are females what percent are females?

    asked by Jesse
  7. Calculus

    The total stopping distance T of a vehicle is shown below, where T is in feet and x is the speed in miles per hour. T = 2.5x + 0.5x^2 Approximate the change and percent change in total stopping distance as speed changes from x = 15 to x = 18 miles per

    asked by A
  8. MATH

    How many kilometers can a motorist travel from 8:55 AM to 10:10 PM at a rate of 60 km/hr?

    asked by HANHAN
  9. Chemistry

    A solution is created by dissolving 13.0 grams of ammonium chloride in enough water to make 265 mL of solution. How many moles of ammonium chloride are present in the resulting solution? When thinking about the amount of solute present in a solution,

    asked by Onye
  10. math

    the minute hand of a clock is 6cm long.how far does the end of the hand travel is 35minute

    asked by Samuel
  11. Physics

    a rocket of mass 1000kg containing a propellant gas of 3000kg is to be launched vertically. If the fuel is consumed at a steady rate of 60kg per seconds, calculate the least velocity of the exhaust gas if the rocket and content will just lift off the

    asked by Michael
  12. math Question

    classify the triangle by its angles and its sides. Explain how you knew which classifications to use. top of the triangle is 70 degrees, bottom right is 45 degrees and bottom left is 65.

    asked by Anonymous
  13. Optics

    A converging lens of focal length f1 = +22 .5cm is placed at a distance d = 60 .0cm to the left of a diverging lens of focal length f2 = −30.0cm. An object is placed on the common optical axis of the two lenses with its base 45.0cm to the left of the

    asked by Anon
  14. geometry

    Classify the triangle with angles with measures 48,62 and 70 as acute right or obtuse A acute B right C obtuse

    asked by oof
  15. MATH - NEED HELP ASAP PLZ

    Toshi works at a pet store. They sold 136 bags of dog food last month. To boost dog food sales, the store manager is going to give all the store clerks a bonus if they can increase dog food (bag) sales by 25% next month. How many bags of dog food do they

    asked by Ryleigh
  16. geometry

    name the angle that is supplementary to COB A.AOF B. COD C. BOF D. DOC

    asked by oof
  17. physics/electrical circuits

    A given wire has a resistance of 17.5 ohms. If its length is 560 m, how much length must be cut-off from the wire in order to reduce its resistance to 10 ohms?

    asked by dumon
  18. Math

    The two legs of a right triangle are in the ratio √3/2. If the hypotenuse is 10 units long, find the area (in square units) of the triangle.

    asked by K
  19. ElA / Who Knows if The Moons

    Which line from the poem best supports the idea that the moon might be a perfect place?

    asked by Cheater
  20. Physics

    If s=at^2+bt+c where is distance and is time, what will be the correct unit of a, b, and c

    asked by Queen
  21. Algebra

    a square painting is surrounded by a frame. the outside edges of the frame are x inches in length and the frame is 1 inch thick. what is the total area of the frame? A: -4x + 4**??** B: 4x - 4 C: x^2 + 4x + 4 D: x^2 - 4x - 4

    asked by BemoGeno
  22. English

    WILL GIVE BRAINLIEST 1. (Look) out of the window and tell me what you see. indicative imperative subjunctive 2. Yosemite National Park (is) a national treasure. indicative imperative subjunctive 3. If I (were) you, I’d hike up Bridal Veil Falls.

    asked by MSTV
  23. Math

    A soccer team played a total of 27 matches and the ratio wins to losses was 7:2. How many games did the team win and how many did it lose?

    asked by Anonymous
  24. Math

    There is a school that has 6,190 students there is already 216 how many more teachers are needed

    asked by Jesse
  25. math

    The state lottery (which has a 6% lottery tax) offers to pay winnings in 25 annual payments or one lump sum, sometimes called a cash-out option. This week’s lottery has a jackpot of $30 million and a cash-out value of $18.2 million. Granted that the odds

    asked by sarah
  26. Maths

    In the rectangle OABC, M is the midpoint of OA and N is the midpoint of AB. OB meets MC at P and NC at Q. Show that OP=PQ=QB Many Thanks

    asked by Peirs
  27. Chemistry

    10. Write out the precipitation reaction formulas: NaOH(aq)+MgCl2(aq)> a. Complete ionic reaction: b. Net ionic reaction: c. Molecular reaction: *Please could some explain step by step why and how you solve this problem I do not understand at all . Thanks

    asked by Naomi
  28. Lab Physic

    If T=2π√L/8 Then given that L=100.0±0.1cm(limit standard errors) and T=2.01±0.01s(limit standard error) Calculate the value of g and its standard error. Pls I need answer to that

    asked by Nomis
  29. Math

    When a marathon runner completes 3 round around a circular track he covers a distance of 66 km.find the radius of track.

    asked by Ujjwal gautam
  30. Chemistry

    Calculate what Mass of CO2 is produced when 34.6g of C8H18 is burned in the air

    asked by Maiboe
  31. american government

    All of the following are modern polling methods except: a. pollster interviews b. mail questionnaires c. in-person interviews d. telephone interviews I can't find this answer anywhere in my textbook. Help!

    asked by huncho jack
  32. Statistics

    (GRAPH) Sketch a normal curve that has a mean of 15 and a standard deviation of 4. On the same x-axis, sketch another normal curve that has a mean of 25 and a standard deviation of 4. Describe the two normal curves.

    asked by Sylvia
  33. physics

    A 32 kg girl runs up a flight of stairs that is 30 m high. How much work does this require? Not sure how to even start

    asked by si
  34. Physics

    You are standing 7 feet from one speaker and 10 feet from another. Both speakers are producing the same sound. If the combined sound from both speakers is barely audible at your location, which of the following could be the wavelength of the sound? Choose

    asked by Shae
  35. geometry

    Which of the following of the complement and the supplement of an angle with a measure of 20˚

    asked by oof
  36. Statistics

    Find the area under the normal curve in each of the following cases. 1. Between z = 0 and z = 1.63 2. Between z = 1.56 and = 2.51 3. Between z = -0.76 and z =1.35 4. Between z= -0.26 and z = -1.76 5. To the left of z = 2.35 6 To the right of z = -1.31 7.

    asked by Sylvia
  37. Chemistry

    The half life of tritium is 12.3 yr. If 62.2mg of tritium is released from a nuclear power plant during the course of an accident, what mass of this nuclide will remain after 105 yr?

    asked by TP
  38. HELP ME WITH MATH

    find the value of x in the triangle | x \ | \ | \ | \ | \ |_ 54 \ |_|________________________________\ A 126 B 234 C36 D144

    asked by tengo
  39. physics/electrical circuits

    a wire has a resistance of 1 ohm if the length is increased four times and the area is double the original, find the new resistance of the wire.

    asked by dumon
  40. physics/electrical circuits

    a heater wire length 50cm and a 1mm^2 in cross section carries a current of 2A when connected across a 2 V battery. what is the resistivity of the wire?

    asked by dumon
  41. physics/electrical circuits

    two identival 3v, 1 ohm batteries are connected in parallel with like polarity to like. the norton equivalent circuit of this combination is?

    asked by dumon
  42. science

    A boy moves 100m towards North then 70 my towards East then what is its displacement

    asked by kamran
  43. Algebr

    what is the simpler form of the expression (5d+2)(3d^2+8d-3) A: 15d^3 + 46d^2 + 1d - 6 B: 15d^3 + 34d^2 - 1d - 6 C: 15d^3 - 34d^2 + 1d - 5 D: 15d^3 + s4d^2 - 1d - 5 My answer is A or B.

    asked by BemoGeno
  44. physics/electrical circuits

    if there are eleven resistors of 33k ohms each in parallel, what is the total resistance?

    asked by dumon
  45. Physics

    Due to interference, a thin film reflects no orange light...it appears dark. If you double its thickness and illuminate it again with orange light, what will you see? Choose one answer only. It will appear dark again. It will appear bright (strongly

    asked by Shae
  46. Physics,,,,,,,How do I solve this?

    Red light always has a lower frequency than blue light. (a) In a vacuum, these two colors are known to travel at the same speed. How do their wavelengths compare in vacuum? Choose one answer only. wavelength of blue > wavelength of red wavelength of red =

    asked by Shae
  47. Physics,,,,,,,How do I solve this?

    Objects A, B, and C lie in the next room hidden from direct view of the person shown in the diagram. A plane mirror is placed on the wall of the passageway between the two rooms as shown. Which of the objects will the person be able to see in the mirror?

    asked by Shae
  48. stats

    Is the chi squared test used for continuous/discontinuous data? I think its continuous.

    asked by Anonymous
  49. Math

    There is a school that has 6,190 students there is already 216 how many more teachers are needed?

    asked by Rena
  50. Social

    it is possible to be part of multiple nations simultaneously. however, in times of crisis, it is essential that loyalty to your country of residence take priority over any other loyalties.  To what extent should we embrace the perspectives reflected in

    asked by Sarah
  51. Chemistry

    Study the balanced equation. 3O_2=2O_3 When 4.26 x 1016 mol of oxygen (O) are converted into ozone, how many mol of the pollutant (O3) are formed?

    asked by Summer
  52. physics/electrical circuits

    hevenin resistance Rth is found [ ] (A) by removing voltage sources and replace with their internal resistances (B) by short-circuiting the given two terminals (C) between any two open terminals (D) between same open terminals as for Eth

    asked by dumon
  53. Great Cities Past and Present

    Answer the following questions in a few sentences. Shanghai Questions 1. How did Shanghai merge East and West in the era of colonialism? Who do you think benefited most from the city as it existed at that time? 2. How was Shanghai transformed in the

    asked by Saif
  54. Science

    A simple of oxygen gas at room temperature and 1.03atm occupies a volume of 22dm³. Find the volume of the oxygen gas at STP?

    asked by Exzive nanzii
  55. Science

    I am a world of five letter People eats me If u remove my first letter i will be a form of energy If u remove my 2nd i will be needed 4 living If u remove my 3rd letter i will be a preposition If u remove my 4th letter i will be frink 4 u Ans if u r

    asked by Chandrakant
  56. Statistics

    A. In a given normal distribution, the sample mean is 75 and the sample standard deviation is 4. Find the corresponding standard score of the following values: 1. 69 2. 85 3. 70 4. 65 B. In a given normal distribution, the population standard deviation is

    asked by Sylvia
  57. English

    I was wondering if anyone could give me an idea for this essay prompt? Describe a situation in which you have made a direct impact on the life of someone else. I just have no idea where to start or write about...

    asked by Jack
  58. Maths

    Sorry In the rectangle OABC, M is the midpoint of OA and N is the midpoint of AB. OB meets MC at P and NC at Q. Show that OP=PQ=QB

    asked by Edwas
  59. american government

    Which of the following is NOT true in U.S. elections? a. A third party candidate can cause the candidates in a dominating party to lose votes. b. Third parties give those voters who do not support the political views of either dominating party a chance to

    asked by huncho jack
  60. Maths

    In the rectangle OABC, M is the midpoint of OA and N is the midpoint of AB. OB meets MC at P and NC at Q. Show that QP=PQ=QR. Thanks in advance

    asked by Edwas
  61. Chemistry (mol)

    How many particles are in 9.22 x 10–37 mol of iron(III) oxide (Fe2O3)? 5.55 * 10^-13 mol Fe2O3 5.54 * 10^12 mol Fe2O3 1.47 * 10^-23 mol Fe2O3 1.60 * 10^23 mol Fe2O3

    asked by Summer
  62. american government

    How would the work of lobbyists be affected if there were no political parties? So I wrote about how there would be a lot of chaos if there weren't any political parties and how everyone would be divided. But I can't figure out this part about the

    asked by huncho jack
  63. Science, chemistry

    Electrophilic substitutions reaction of pyrrole

    asked by Pronob
  64. college of education Kangere bauchi state

    3×a√1x= 27-x find x

    asked by sulaiman abdullahi
  65. Math

    1) if the polynomial p(x) has factories of 12, (x-5), and (x+4), which of the following must also be a factor of p(x)? 2x^2 + 8 4x^2-20 6x^2 -6x-120 x^2-10x+25 2) IF f(x)= -x+7 and g(f(x))= 2x+1, what is the value of g(2)? ^I got 11 The square of a

    asked by Aline
  66. physics/electrical circuits

    there are two wires a and b. if the resistance of B is R and the diameter of A is twice of B, the length and the nature of the material is the same, find the resistance of A.

    asked by doffy
  67. physics/electrical circuits

    five resistors each has a resistance R ohms and are connected in parallel. if the equivalent resistance is 20 ohms. find the ohmic resistance of each resistors.

    asked by dumon
  68. Electronics

    I have an amplifier and an attenuator in cascade. I know that when dealing with amplifiers in cascade, the overall gain is A=A1*A2*A3..., but how do I compute the overall attenuation when dealing with more than one attenuator? How do I compute the overall

    asked by Cascade Amplifier and Atenuator
  69. Math

    The two legs of a right triangle are in the ratio √3/2. If the hypotenuse is 10 units long, find the area (in square units) of the triangle. Please provide COMPLETE solution and FINAL ANSWER.

    asked by K
  70. Math

    First tray apple is 1/5 bad, second tray apple is less 5 apples and 1/4 bad apple, write equation tray 1 in terms of x and solve x

    asked by Anonymous
  71. New Format?

    Did Jiskha get a site-wide formatting update? I would suggest next to add buttons that say "B" for bold, "U" for underline, and "I" for italics. Nice!

    asked by Anonymous