Questions Asked on
January 21, 2018

  1. Biochemistry

    What volume (in milliliters) of 0.180 M NaOH should be added to a 0.135 L solution of 0.0230 M glycine hydrochloride (pKa1 = 2.350, pKa2 = 9.778) to adjust the pH to 2.73? Plz help, I'm not sure how to answer the question! Thank you!!

    asked by Deena12
  2. Honors English 10A

    Which of the following sentences contains a verb in the future progressive form? A. The fox was hiding behind the barn, waiting for a chance to attack. B. Housing prices have been slowly increasing over the last months. C. This class has been studying

    asked by Help Me Please!
  3. Algebra 2

    URGENT HELP PLEASE the temperature of a room during an experiment can be modeled by the function f(x)=23.7 cos (Pi x /60) +18. Where f(x) is the temperature F degrees and x is the number is hours into the experiment. What is the lowest temperature the room

    asked by Algebra 2
  4. Honors English

    Can somebody please let me know or show me a website that clarifies what the elements of the Restoration comedy are? Also how food consumption relates to the play "The Importance of Being Earnest"?

    asked by Kimberly
  5. Chemistry

    Magnesium can be used as a “getter” in evacuated enclosures to react with the last traces of oxygen. (the magnesium is usually heated by passing an electric current through a wire or ribbon of the metal) If an enclosures of 0.452L has a partial

    asked by Ricky
  6. Chemistry

    What is the maximum amount of magnesium chloride you can produce when 15 g of magnesium (Mg) reacts with 20 g of hydrochloric acid (HCl)? Mg + HCl → MgCl2 + H2

    asked by Malia
  7. physics

    the radius of earth is 6000km what will be the weight of a 120 kg body if it is taken to a height of 2000km above the surface of earth?

    asked by disha
  8. State history

    7. Describe ways in which the reservation system was beneficial to settlers but harmful to the American Indians.

    asked by Help please !
  9. Physics

    Calculate the frequency of an electron traveling at 1.85 X 10^7 m/s. Since the velocity and mass of the electron are known, I tried to use the De Broglie wavelength formula: let L = lambda, h = plancks constant L = h/mv and I got 3.94*10^-11 for the

    asked by Stesson
  10. English

    Identify the correct sentence. a) Please pick me up at five p.m. at night after work. b) Please pick me up at 5 p.m. after work. c) Please pick me up at 5 pm at night after work. d) Please pick me up at 5:00 p.m. after work. B

    asked by Kourtney
  11. Physics

    It is observed that 55.50 mL of water at 20 ∘C completely fills a container to the brim. When the container and the water are heated to 60 ∘C, 0.37 g of water is lost. Density of water at 60 ∘C is 0.98324 g/mL. What is the coefficient of volume

    asked by Marthin
  12. physic

    The figure shows the y-position (in blue) of a particle versus time. (a) What is the average velocity of the particle during the time interval t = 1.50 s to t = 4.50 s? (Express your answer in vector form.) Incorrect: Your answer is incorrect.

    asked by joy
  13. English

    Identify the sentence that is punctuated correctly. a) In December, 2013 I visited my aunt for Christmas in Allentown, Pennsylvania, for the first time in 20 years. b) In December 2013, I visited my aunt for Christmas in Allentown, Pennsylvania for the

    asked by Kourtney
  14. physics

    a water pump of 1.2kw rating pumps 480kg of water into overhead tank at the height of 5m at 30seconds.calculate the effiency of the pump

    asked by victoria
  15. Math

    What is 3 tens plus 52 and 11? Write your answer in 3 forms.

    asked by Damon
  16. Chemistry

    If an electric discharge produces 300 liters of ozone (O3), how many liters of oxygen (O2) are required? 3O2->2O3

    asked by Student
  17. Economics

    Suppose a university decides to alter its tuition schedule by separating its students based on how many years of college they have completed. Most university programs require four years to complete. First-year students would get a 13% tuition reduction.

    asked by Help me
  18. physic

    A particle's position is given by z(t) = −(8.10 m/s^2)t^2k for t ≥ 0. (Express your answer in vector form.) (a) Find the particle's velocity at t = 3.00 s and t = 6.00 s.

    asked by joy
  19. Math 6th Grade

    Jordan has 4/5 as many DVDs than Joseph. If Jordan has 56 DVDs, then how many does Joseph have?

    asked by William Tran from Connexus
  20. Chemistry

    A pyrotechnician mixes 280 g of black powder for a firework. Find the amount of oxygen, carbon dioxide, and sulfur dioxide generated when this firework bursts, if the oxidizing agent in the powder is saltpeter. How do I find their amounts?

    asked by Student
  21. math

    3/5 of a revolution represents approximately how many radians? Question 12 options: 6.28 3.14 3.77 108.00

    asked by mike
  22. English

    The quarterback, along with his teammates, __ congratulated following a dramatic victory. Which of the following options correctly completes the sentence above? A. was B. were C. have been D. were being

    asked by Kaye
  23. Physics

    The mass of ball A is 10kg and the mass of ball B is 5kg. If the initial velocity is set to 3 meters per sec for each ball, what is the final velocity of ball B if the final velocity of ball A is 2 meters per second? Use the elastic collision equation to

    asked by Anonymous
  24. Physical science b

    The mass of ball A is 10kg and the mass of ball B is 5kg. If the initial velocity is set to 3 meters per sec for each ball, what is the final velocity of ball B if the final velocity of ball A is 2 meters per second? Use the elastic collision equation to

    asked by Anonymous
  25. Chem -Bob Pursley ASAP Please Help!

    So I have to draw a couple of lewis structures for; (b) (CH 3 ) 2 S (c) KOCl For b I did H-C-C-S-H (Remaining Hs connected above and below C) and for c) I did [K]^+ O-Cl. Are either of the right?

    asked by ChemGuy
  26. English

    Jimmy you must leave the room shut the door and be quiet. Which of the following options correctly punctuates the sentence above? A Jimmy, you must leave the room, shut the door, and be quiet. B. Jimmy; you must leave the room, shut the door and be quiet.

    asked by Kaye
  27. Biology

    A heterozygous brown mouse is crossed with a homozygous white mouse. What are the genotypes and phenotypes of the offspring? If these mice had 3 offspring, what is the probability that all 3 would be white?

    asked by Jenna
  28. Chemistry

    In the equilibrium system CH3COOH(aq) + H2O(l) —> — H3O+ CH3COO-(aq) .

    asked by L
  29. Chemistry

    Hi this question is on my study guide and I want to make sure I get to the right answer and know why. Explain why the following reaction goes to completion instead of to equilibrium. Mg(s) + 2HCL(aq) -> MgCl2 (aq) + H2(g) (subscript 2 after MgCl2 and H2)

    asked by Lauren
  30. social studies

    how is life different now in the European Union (EU) than before it was formed.

    asked by Kate
  31. Java

    Design a flowchart for a program that prompts the user to enter ten numbers one at a time. After the user has entered all ten number the program will then print out the total of those ten number and quit.

    asked by Max
  32. Math

    Find graphing solutions to 4x-y=5

    asked by Krystal
  33. English

    The team __ is wearing the red jerseys is the one I came to see. Which of the following pronouns correctly completes the sentence above? A. who B. whom C. that D. which

    asked by Kaye
  34. Physics

    How does the electric potential energy (EPE) between two point charges depend upon their separation s? a. EPE ∝ 1/s b. EPE ∝ s c. EPE ∝ 1/s2 d. EPE ∝ s2 I want to say it's a. since it's part of the formula UE = kq1q2/s but I'm not too sure if that

    asked by Brian
  35. Physics

    As you travel through space, you find yourself moving into regions of ever-higher voltage. You are traveling . . . A) perpendicularly to the electric field. B) in exactly the same direction as the electric field. C) in a region with no electric field. D)

    asked by O
  36. Science

    A coach wants to find out the speed of the runners on the track team.Tell what simple equipment the coach need in order to do this and explain how it should be done.

    asked by Mel
  37. English

    The surgeon---------------------operated on the patient has a great reputation. Which of the following options correctly completes the sentence above? a) whom b) that c) who d) which

    asked by Kaye
  38. Chemistry

    Hi this question is on my study guide and I want to make sure I get to the right answer and know why. Calculate K for the synthesis of ammonia at 400°C N2(g) + 3 H2(g) —> 2 NH3(g)

    asked by Lauren
  39. Physics

    The tube of a mercury thermometer has an inside diameter of 0.130 mm. The bulb has a volume of 0.270 cm^3. How far will the thread of mercury move when the temperature changes from 13.5 ∘C to 32.5 ∘C? Take into account expansion of the Pyrex glass.

    asked by Marthy
  40. Maths

    A map has A scale of 1.25000.two towns are 15cm apart on the map.how far apart in real life ? answer in metres ?

    asked by Sam
  41. Geography

    Assess the extent to which the ethical consumption trends may have reduced the negative consequences of globalisation. Thank you.

    asked by Adam
  42. advanced algebra 2

    (5y^4-23y^3+24y^2-7)/(y-3)

    asked by bret
  43. Math

    Find the perimeter of a rectangular area with a length of 13 inches and a width of 7 inches. Calculate with and without distribution

    asked by Darkdream
  44. Math

    A monkey climb 3metre in 1second but slip 1metre. How will take time climb 60metre

    asked by Pawan
  45. Physics

    As you travel through space, you find yourself moving into regions of ever-higher voltage. You are traveling . . . A) perpendicularly to the electric field. B) in exactly the same direction as the electric field. C) in a region with no electric field. D)

    asked by O
  46. Chemistry

    List the most i mportant (strongest) intermolecular force(s) that must be overcome to (a) vaporize liquid CH 3 OH (b) remove water of hydration from NiSO 4 • 7H 2 O (c) melt solid KBr so for a Isaid H bonding, for b I said ion-dipole (not sure about this

    asked by Adam
  47. Java

    The Daily Gazette accepts classified ads in several categories. For most ads, the newspaper charges 10 cents per word for the first 50 words, and 8 cents per word for every word after that. Design the Javascript for a program that accepts data about an ad:

    asked by Max
  48. Social Studies

    What is the goal of the European Union

    asked by Tyler
  49. Chemistry

    How do you find a reaction order?

    asked by Student
  50. Physiology

    1. Two molecules of ____ are produced by glycolysis. Each molecule has ____ carbons. C A. Oxaloacetate...4 B. Citrate...3 C. Pyruvate...3 D. Acetate...4 2. Oxaloacetate combines with acetyl coA at the beginning of. D A. Electron transport chain B.

    asked by Hayley
  51. physics

    a car of mass(m)800kg initially at rest is accelerated at rate of 4m/s calculate the k.e @ 5seconds

    asked by victoria
  52. Further Mathematics Arithmetic Progression

    I have a problem solving the question below could someone help me solve it or at least give me a hint on how to solve it ? If you can help here is the question ; p,q,r are three consecutive terms of an A.P whose sum is 21. The ratio p:r = 6:1 , Find p:q:r.

    asked by Ini
  53. BIOLOGY

    Wat is Enterobacteria including Fluoroquinolones

    asked by PEREKUN KING HEZEKIAH ESKAYXZY IYANU
  54. Pre-Calculus

    So I'm given a general equation and am expected to get the location on the unit circle, the period, and the general solution to it. The equation is (3cot^2)2x-1 = 0. I've gotten it down to (cot^2)2x = 1/3 but I have no clue what to do next. Please help!

    asked by Mariam
  55. Math

    In​ 2009, a diabetic express company charged ​$39.95 for a vial of type A insulin and ​$30.49 for a vial of type B insulin. If a total of ​$1446.64 was collected for 40 vials of​ insulin, how many vials of each type were​ sold?

    asked by Erin
  56. Math

    A rectangular parking lot has an area of 7/8 of a square kilometer. The length is 1/4 kilometer. What is the width, in kilometer, of the parking lot?

    asked by Anonymous
  57. Physiology

    Will someone look at these again please? There are 2 wrong but can't figure out which 2 1.During which stage of cellular respiration is most ATP made? C  A. Glycolysis  B. Chemiosmosis  C. Electron Transport Chain  D. Citric acid Cycle  2. The

    asked by Hayley
  58. Math

    The only way to get to Ship Island is to take a boat, which is free for 2 and under, $17 for children 3 to 10 years old, $25 for seniors 62 and over and $25 for everyone else. Debbie paid $116 for 6 people in her family to go to the island for the day. Is

    asked by Kris
  59. Physiology

    1. Atp synthase is an enzyme in the. D A. NUCLEUS B. CELL MEMBRANE C. MITOCHONDRIAL MEMBRANE D. MITOCHONDRIAL MATRIX 2. Each condon on a(n) ____ molecule encodes for ___ amino acids. A A. mRNA...one B. mRNA....three C. tRNA...three D. tRNA...one

    asked by Hayley
  60. Math

    A farmer harvested 144 bags of maize in one season. In the second season the yield increased in the ratio 4:3. The farmer supplied all the bags of maize harvested in the second season equally to three millers. How many bags of maize did each miller get?

    asked by Elis
  61. Math

    rectangular water tank whose base is 1.5 m by 0.5 m is to be filled with water 50 litre containers. How many such containers will be required to fill the tank to a height of 1 meter?

    asked by Elis
  62. Math

    A watch loses 30 second hour. If the watch was set right on Sunday at 11:30 p.m. What day and time did it show after 10 hours?

    asked by Elis
  63. Math

    The height of an isosceles triangle is 4 cm. Each of the two equal sides measure 5 cm. What is the area of the triangle?

    asked by Elis
  64. Math

    1 x (4)-8 x 9/-3 This is a question from khan academy and it says the answer is 20. When it shows their work, it shows they are doing the 9/-3 division first, is that correct? Isnt the -8x9 first?

    asked by Javier
  65. Chemistry

    Trichloromethane consists of10.05% carbon 0.83% hydrogen and 82.12% chlorine.Its relative molar mass is 119.5% .Find its molecular mass(Cl=35.5,C=12,H=1)

    asked by Morgane
  66. Math

    I am a little confused with this trigonometry question. It says that sin0=O. I understand that because It says sin it means quadrant 1 and 2. The possible answers are 0, 90, 180, and 270. I know 270 is not correct but the others are confusing me. Angles 0,

    asked by Ineedhelp
  67. Math

    Hi! I'm Julia Nae and I need help in this question: In a class of 50 students, 19 are girls. What percent of the class are boys? Pls. Just answer this quickly because I really need this tomorrow (Jan.22,2018). I'm living in the Philippines and tomorrow is

    asked by Julia Mae
  68. Physics

    A 68.6 kg solid aluminum cylindrical wheel of radius 0.45 m is rotating about its axle in frictionless bearings with angular velocity ω = 45.5 rad/s. If its temperature is then raised from 21.0 ∘C to 88.0 ∘C, what is the fractional change in ω?

    asked by Marthy
  69. math

    is 8square root 2 + 2square root 2 equal to 10square root 2? Sorry, I don't know how to type that on my computer. So 8 next to the square root symbol with 2 underneath it + 2 next to the square root symbol with 2 underneath it. I'm thinking those are like

    asked by carly
  70. Chemistry(Photoelectric effect)

    I've got this question wrong 2 times now... Which of the following statements about the photoelectric effect are correct? I. If electrons are being ejected, the number of electrons ejected increases with increasing light intensity. II. The minimum energy

    asked by John
  71. Algorithms

    Consider a very large undirected graph of Email Networks. The nodes (or vertices) represent email addresses, and an edge represents the fact that there was at least one email in at least one direction between the two addresses. Which technique will you use

    asked by Learner
  72. Maths

    Determine the two consecutive integers that each irational number lies between 56,45and6

    asked by Pertunia
  73. Math

    A survey shows that 15% of men in a cerain are tall if a man is chosen in the street one afternoon what is the probability that he is short

    asked by Seun
  74. Physiology

    1.During which stage of cellular respiration is most ATP made? C A. Glycolysis B. Chemiosmosis C. Electron Transport Chain D. Citric acid Cycle

    asked by Hayley