Jk

Most popular questions and responses by Jk
  1. precalculus

    find an hyperbola equation with foci (0, +/-8) and asymptotes; y=+/-1/2x?

    asked on April 16, 2015
  2. chemistry help

    A 15.00 mL sample of an unknown monoprotic weak acid solution is titrated with 0.35 M NaOH. The initial buret reading is 0.23 mL. The phenolphthalein indicator turns the solution light pink when the buret reads 29.58 mL. B. How many moles of NaOH were

    asked on April 1, 2015
  3. English

    1. A place that has experienced a cataclysm has a. diminished in size b. grown green and lush c. suffered violent change *** d. begun to give off rays of light 2. In which of the following sentences is the word conceivable used correctly? a. Your goal of

    asked on October 30, 2018
  4. Math

    What is the best estimate for the sum of 3/8 and 1/12?

    asked on March 27, 2019
  5. chemistry

    A 15.00 mL sample of an unknown monoprotic weak acid solution is titrated with 0.35 M NaOH. The initial buret reading is 0.23 mL. The phenolphthalein indicator turns the solution light pink when the buret reads 29.58 mL. A. what volume of 0.35 M NaOH was

    asked on April 1, 2015
  6. English

    Vinegar (by Roger McGough) sometimes i feel like a priest in a fish and chips queue quietly thinking as the vinegar runs through how nice it would be to buy supper for two (1967) Poem for Roger McGough (by Adrian Henri) A nun in a supermarket standing in

    asked on December 11, 2011
  7. math

    Sam bought a new car for $26,500. The car depreciates approximately 13% of its value each year. A) What is the decay factor for the value of this car? b)  Write an equation to model the decay value of this car? c)  What will the value of the car be in 10

    asked on June 27, 2014
  8. chemistry

    a 3.54 grams solid sample of an unknown monoprotic acid was dissolved in distilled water to produce a 47.0 mL solution at 25 degrees. This solution was then titrated with 0.2 M NaOH. The equivalence point was reached when 35.72 mL of 0.2 M NaOH was

    asked on April 1, 2015
  9. Math

    What is the value of the digit 9 in the number 597,184?

    asked on March 26, 2019
  10. math

    A ferris wheel is 35 meters in diameter,and can be boarded at ground level. The wheel turns in a counterclokcwise direction, completing one full revolution every 5 minutes. Suppose that a t=0 you are in the three o'clock position. Write a formula, using

    asked on August 13, 2010
  11. Math

    What is the quotient of 396 divided evenly by 12?

    asked on March 27, 2019
  12. chemistry help

    a 3.54 grams solid sample of an unknown monoprotic acid was dissolved in distilled water to produce a 47.0 mL solution at 25 degrees. This solution was then titrated with 0.2 M NaOH. The equivalence point was reached when 35.72 mL of 0.2 M NaOH was

    asked on April 1, 2015
  13. English

    What words are articles?

    asked on March 27, 2019
  14. Math

    What is the value of the following expression?

    asked on March 27, 2019
  15. COLLEGE CHEMISTRY HARD

    calculate the ph at the equivalence point for the titration of 0.01 M Ch3COOH with 0.1 M NaoH ka= Ch3Cooh 1.8E-5 idek how to do it?

    asked on March 28, 2015
  16. english

    Vinegar (by Roger McGough) Poem for Roger McGough (by Adrian Henri) sometimes A nun in a supermarket i feel like a priest standing in the queue in a fish and chips queue Wondering what it’s like quietly thinking To buy groceries for two. as the vinegar

    asked on December 11, 2011
  17. Math

    What is the value of the expression? 30 - (5 x 4) + 2

    asked on March 27, 2019
  18. chemistry

    calculate the ph at the equivalence point for the titration of 0.01 M Ch3COOH with 0.1 M NaoH ka= Ch3Cooh 1.8E-5 idek how to do it?

    asked on March 28, 2015
  19. Science

    How does earths rotation cause day and night?

    asked on February 13, 2019
  20. chemistry

    In the following questions, assume that no excess distilled water was added from a wash bottle during the titration of 10.00 mL of vinegar with your standardized solution of NaOH. A. calculate the pH of vinegar. B. what was the pH of the solution after

    asked on April 1, 2015
  21. chemistry

    Where is an electron in 3Py orbital most likely to be found and where does the probability it vanish?

    asked on December 26, 2013
  22. Math

    Three angles of a quadrilateral are in the ratio 1:2:3. The sum of the least and the greatest of these angles is 200°. Find all the four angles of the quadrilateral.

    asked on August 23, 2017
  23. math

    sinx+ siny/ (cosx+cosy)= tan 1/2 (x+y) prove this identity

    asked on August 13, 2010
  24. chemistry

    calculate the pH after 0.02 mol NaOH is added to 1.00 L of .1 M sodium propanoate NaC3H5O2

    asked on March 29, 2015
  25. chemistry

    calculate the ph at the equivalence point for the titration of .1 M NH3 and .1 M HCl. kb NH3= 1.8E-5 how you do it?

    asked on March 28, 2015
  26. chemistry help

    In the following questions, assume that no excess distilled water was added from a wash bottle during the titration of 10.00 mL of vinegar with your standardized solution of NaOH. A. calculate the pH of vinegar. B. what was the pH of the solution after

    asked on April 1, 2015
  27. precalculus

    find the eccentricity to identify the conic, then sketch the conic and its directrix r=1/1-cos theta r=2/3+2 sin theta r=4/1-2 cos theta

    asked on April 22, 2015
  28. precalculus

    find the eccentricity to identify the conic, then sketch the conic and its directrix r=1/1-cos theta r=2/3+2 sin theta r=4/1-2 cos theta

    asked on April 22, 2015
  29. math - exponent laws

    evaluate -(11/17^-10/(9/5)^(1/10) answer from Reiny: (-11/-17)^-10 = 1/(11/17)^10 = 77.725... (I stored that in A on my calculator) (9/5)^(1/10) = 1.0605.. so -(11/17^-10/(9/5)^(1/10) = -77.725... /1.0605... = -73.28837824 --- do we need to reciprocal

    asked on February 10, 2015
  30. precalculus help

    Let z1=2(cos 2pi/3+isin 2pi/3) what are z1^(1/3)? do not even know how to apply demoivre theorem?

    asked on March 31, 2015
  31. SUPER HARD CHEMISTRY

    a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point

    asked on March 28, 2015
  32. HARD COLLEGE CHEMISTRY

    a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?

    asked on March 28, 2015
  33. Chemistry

    How many moles of oxygen atoms are contained in 1.86 x 10-2 mol CuSO4·5H2O

    asked on March 22, 2011
  34. chemistry

    what products would form after hydrogenation of 2-methyl-1-butene? after halogenation (cl2)?

    asked on April 26, 2015
  35. enlgish

    Last night, lucy and Neil met Morey in Gramercy Park. 1. The object of the verb is.? 2. the predicate of the sentence is?

    asked on September 2, 2009
  36. chemistry

    what products would form after hydrogenation of 2-methyl-1-butene? after halogenation (cl2)?

    asked on April 26, 2015
  37. precalculus

    use the discriminant to determine whether the equation is a parabola, an ellipse, or a hyperbola. Then identify the angle of rotation required to eliminate the xy-term. x^2+4xy+y^2=1 5x^2-6xy+5y^2-8x+8y-8=0 9x^2+24xy+16y^2=25

    asked on April 22, 2015
  38. Physics (mechanics)

    A u-control airplane of mass m is attached by control wires of length L and negligible mass to the "pilot" who controls the lift provided by the wing FL. The wires control the plane's elevator or angle of attack. The plane's engine keeps it moving at

    asked on July 9, 2013
  39. math

    Each student in a class contributed as many paise as number of student in the class.teacher contributed rs 13 to make total collection of rs 49.how many students were in the class?

    asked on May 27, 2017
  40. pre-calculus

    eliminate parameters of x=1+cos t y=1-sin t graph the parametric equations

    asked on April 22, 2015
  41. Understanding percent

    In the square, if part A is 1/4 of the square and part C is 1/10 of the square, what percent of the square is part B?

    asked on March 27, 2012
  42. math

    It takes 3/8 cup of powdered drink mix to make 1 quart of a flavored drink. The table shows the number of cups of powdered drink mix that Juanita has of each flavor. How many quarts of flavored drink can Juanita make for each flavor?

    asked on April 4, 2018
  43. precalculus

    how do you eliminate the parameters for x=1-t^2 and y=1+t?

    asked on April 22, 2015
  44. precalculus

    algebraically identify the symmetries of r=2sin(2theta)

    asked on March 31, 2015
  45. precalculus

    Let z1=2(cos 2pi/3+isin 2pi/3) what are z1^(1/3)?

    asked on March 31, 2015
  46. chemistry

    PH of gatorade and body sweat

    asked on March 29, 2015
  47. college chemistry HARD

    a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?

    asked on March 28, 2015
  48. chemistry

    a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?

    asked on March 28, 2015
  49. easy math

    √(100 - 20√5 + 5 + 15 - 6√15 + 9) solve.

    asked on March 31, 2015
  50. precalculus

    Let u= and v= A. what is the angle between u and v? B. find projvU C. reoslve u into u1 parallel to v abd U2 perpendicular to v.

    asked on March 31, 2015
  51. Math

    angles ABC and XYZ are complementary angles. if m < ABC is 18 more than three times m < XYZ, find < XYZ i have no idea how to do this i know that something has to equal 18+ 3m but i don't understand the (

    asked on June 15, 2014
  52. english

    I consider that cosmetic surgery is a personal option but in some cases it becomes a bad addiction because expand this please

    asked on January 19, 2016
  53. AP chemistry

    what products would form after hydrogenation of 2-methyl-1-butene? after halogenation (cl2)?

    asked on April 26, 2015
  54. precalculus

    find a hyperbola equation with vertices (o,+-4) and passes through the point (3,-5)

    asked on April 16, 2015
  55. precalculus

    Let u have a length of 20 and direction of 60 degrees, and v= 5i-3j what is u? what is abs(2v-u)?

    asked on March 31, 2015
  56. precalculus

    Let z1=2(cos 2pi/3+isin 2pi/3) what are z1^(1/3)?

    asked on March 31, 2015
  57. precalculus

    Let u= and v= A. what is the angle between u and v? B. find projvU C. reoslve u into u1 parallel to v abd U2 perpendicular to v.

    asked on March 31, 2015
  58. precalculus

    Let u have a length of 20 and direction of 60 degrees, and v= 5i-3j what is u? what is abs(2v-u)?

    asked on March 31, 2015
  59. physics

    exercise 4.1 suppose the pilot start agin from rest

    asked on March 17, 2013
  60. geometry

    there are 4 cirlces in an equilateral triangle with sides equal to 16cm. what is the radius of the big circle and the little circles

    asked on February 25, 2013
  61. math

    2 Years before,average age of 8 numbers of family was 20yr.if present average of family even on inclusion of 1 child,remains same.present age of child is?

    asked on May 31, 2017
  62. math

    Distance between 2 villages A and B is 165km.a scooter rider starts from A to B at 75km at speed of 320km/hr.at the same time another scooter rider starts from B towards A at speed of 25km/hr.find when they will cross each other? ( 10 am)?

    asked on May 26, 2017
  63. Maths

    Find x such that the point (x,4) is 10 units from (-2,-2)

    asked on February 3, 2016
  64. Algebra

    For the function f(x) = 5/x+4 find the average rate of change of f from 1 to x:

    asked on November 3, 2015
  65. MATH - exponent laws

    how do you evaluated this? (-)sign ↓ _ __________( -11/-17)^-10 line is divide (9/5)^1/10

    asked on February 9, 2015
  66. physics

    jk

    asked on October 2, 2012
  67. Algebra 1

    Nico drives from school to the store at 25 miles per hour. He drives back to the school (along the same route) at 35 miles per hour, and the returns to the store (via the same route) travelling at 40 miles per hour. Find the average rate for the three

    asked on October 30, 2010
  68. French

    Is "je suis allé souvent" correct or should it be "je suis souvent allé?" Thanks

    asked on January 4, 2009
  1. social studies

    k

    posted on May 28, 2019
  2. Health

    Thank you 😘 all my jiskha helpers/fans!! BIG SHOUTOUT!! Too you all, love you guys 😍😚🙂!!!

    posted on April 4, 2019
  3. Math

    33

    posted on March 27, 2019
  4. Math

    12

    posted on March 27, 2019
  5. Math

    1/2

    posted on March 27, 2019
  6. English

    The, a, an

    posted on March 27, 2019
  7. Math

    Please thumbs up me!

    posted on March 27, 2019
  8. Math

    Please thumbs up me!

    posted on March 26, 2019
  9. Math

    90,000 is the correct answer. It is the best answer ever because it is the rightest.

    posted on March 26, 2019
  10. Math

    90,000

    posted on March 26, 2019
  11. Math

    1x3=3 3x4=12 2x3=6 6x4=24

    posted on March 26, 2019
  12. math

    280 miles Multiply by 40

    posted on March 26, 2019
  13. geometry

    1.cube that has 2x2x2cm 2.sphere that has a diameter of 2cm 3.cylinder that has a height of 2cm and diameter of 2cm Simply find the volume and surface area of each one.

    posted on February 22, 2019
  14. educational technology

    lol yes A B D is correct for all you Connexus users....lol dont listen to the rest of these aholes

    posted on October 30, 2018
  15. English

    Ok thx What about my other answers are they correct?

    posted on October 30, 2018
  16. I need help!

    someone helping u is 100%correct use his or her way

    posted on April 9, 2018
  17. art

    thnxs

    posted on March 30, 2018
  18. identity theft

    yup 100% b a a

    posted on March 29, 2018
  19. english 11

    no

    posted on October 24, 2017
  20. geometry

    T

    posted on October 9, 2017
  21. Chemistry

    799

    posted on September 6, 2017
  22. Probability

    27

    posted on February 12, 2017
  23. Calculus

    oi

    posted on February 6, 2017
  24. 10th grade algebra

    5

    posted on January 14, 2017
  25. science

    21

    posted on November 28, 2016
  26. Finance

    102,857

    posted on November 2, 2016
  27. Math

    998

    posted on November 1, 2016
  28. math

    50

    posted on August 16, 2016
  29. math

    1.4 because u have to divide 5 divide 7.

    posted on February 18, 2016
  30. Science

    Thanks Kiki!!!!

    posted on January 20, 2016
  31. Physics Help

    velocity

    posted on December 31, 2015