karla

Popular questions and responses by karla
  1. chemistry

    In a 1.0x10^-4 M solution of HClO(aq), identify the relative molar amounts of these species:HClO, OH-, H3O+, OCl-, H2O

    asked on October 12, 2012
  2. algebra 2

    f(x)={2x,x1} Given the piecewise functions shown below, select all of the statements that are true. A.f(5)=1 B.f(2)=4 C.f(-2)=4 D.f(1)=5

    asked on June 15, 2015
  3. Algebra

    in what form is the following linear equation written? 3x-2y=4 A.rise-run B.standard C.slope-intercept D.point-slope

    asked on June 16, 2015
  4. English

    In Marigolds how does the author use of tone help describe Elizabeth's perception of her childhood? -her tone sounds solemn at first showing that she was reflecting over her sad or hard childhood. Then it switches to matter of fact because she realizes she

    asked on October 27, 2016
  5. Physics

    A hollow, spherical shell with mass 2.00 kg rolls without slipping down a slope angled at 38.0 degrees. (a) Find the acceleration, the friction force, and the minimum coefficient of fricition needed to prevent slipping. You will find the moment of inertia

    asked on March 27, 2007
  6. Business Finance

    Assume a bank loan requires a interest payment of $85 per year and a principal payment of $1,000 at the end of the loan's eight-year life. a) How much could this loan be sold for to another bank if loans of similar quality carried a 8.5 percent interest

    asked on March 1, 2012
  7. Physics

    One end of a uniform meter stick is placed against a vertical wall. The other end is held by a lightweight cord that makes an angle, theta, with the stick. The coefficient of static friction between the end of the meter stick and the wall is 0.390. A. what

    asked on April 3, 2007
  8. math

    Greg has a dollar bill, quarters, and dimes. how many ways can he make $1.75?

    asked on November 9, 2015
  9. Algebra

    Solve the given polynomial equation. Use the Rational Zero Theorem and​ Descartes's Rule of Signs as an aid in obtaining the first root. 2 x cubed minus 5 x squared minus 5 x minus 1 equals 02x3−5x2−5x−1=0

    asked on November 11, 2016
  10. CHE1

    Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction: 2H2O2(l) → 2H2O(l) + O2(g) ΔH = -196 kJ Calculate the value of q (kJ) in this exothermic reaction when 4.60 g of hydrogen peroxide decomposes at constant

    asked on July 9, 2017
  11. Physics

    A woman with a mass of 50kg is standing on the rim of a large disk that is rotating at an angular velocity of .50 rev/s about an axis through its center. The disk has a mass of 110kg and a radius of 4.0m. Calculate the magnitude of the total angular

    asked on March 27, 2007
  12. Physics

    A cord is wrapped around the rim of a wheel .250 m in radius, and a steady pull of 40.0 N is exerted on the cord. The wheel is mounted on frictionless bearings on a horizontal shaft through its center. The moment of inertia of the wheel about this shaft is

    asked on March 27, 2007
  13. physics

    in a vessel of 40 cm3 of water at 4 ° C is introduced aluminum over 80g to 8 º C. neglecting the effect of the vessel, calculate final temperature

    asked on November 24, 2010
  14. Chemistry

    Find the pH during the titration of 20.00 mL of 0.2380 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54 10-5), with 0.2380 M NaOH solution after the following additions of titrant. (a) 0 mL Ive got the answer of 2.72 (b) 10.00 mL Ive got the answer of 4.81 I'm

    asked on April 2, 2007
  15. college chemistry

    When a solution containing 8.00 g NaOH in 50.0 g of water at 25 °C is added to a solution of 8.00 g of HCl in 250.0 g of water at 25 °C in a calorimeter, the temperature of the solution increases to 33.5 °C. Assuming that the specific heat heat of the

    asked on June 23, 2015
  16. algebra2

    how many solution are there to the equation below? 3x-10(x+2)=13-7x A.1 B.0 C.Infinitely many

    asked on June 10, 2015
  17. Chemistry - Solubility

    Calculate the solubility of copper(II) sulfide in a solution that is 0.150 mol L^-1 in NaCN. I am very confused on what to do. Since there are no common ions, I know that this is not the common ion effect. Also I do not believe this is a pH effect

    asked on March 16, 2015
  18. algebra

    The sqrt of 12x^4 sqrt12= sqrt(4*3)= sqrt4 * sqrt3 what is the sqrt4, and what is the sqrt x4 ? sqrt12= sqrt(4*3)= sqrt4 * sqrt3 what is the sqrt4, and what is the sqrt x4 ?

    asked on July 8, 2007
  19. Physics

    Forces F1=7.50N and F2=5.30N are applied tangentially to a wheel with radius 0.330 m. What is the net torque on the wheel due to these two forces for an axis perpendicular to the wheel and passing through its center? It depends upon whether or not the

    asked on March 27, 2007
  20. math

    Suppose you take out a loan for 180 days in the amount of $13,500 at 11% ordinary interest. After 50 days, you make a partial payment of $1,000. What is the final amount due on the loan?

    asked on October 23, 2014
  21. geonetry

    What is the area of sector CED when DE = 15 yd?

    asked on July 3, 2014
  22. algebra2

    How many solutions are there to the equation below? 145=10x-8x

    asked on June 10, 2015
  23. Math

    A bus is traveling at 79.7 kilometers Er hour east, how far does the bus travel 1.45 hours?

    asked on October 10, 2014
  24. math homework

    What is the perimeter of a triangle whose sides measure 21cm, 16cm, and 19cm?

    asked on April 17, 2014
  25. Chemistry

    If 45g of a 2.2% NaHCo3 solution is to be prepared how many grams of NaHCo3 are needed

    asked on April 16, 2013
  26. algebra 2

    how do i find the are of the region defined by |x|+|y| less than or equal to 5 and |x|+|y| greater than or equal to?

    asked on September 11, 2012
  27. science

    the patient reports numbness and tingling in the left lumbar area and pain in the contralateral femoral region

    asked on August 28, 2012
  28. math

    A new car comes in 5 exterior colors and 3 interior colors. How many different-looking cars are possible?

    asked on August 19, 2012
  29. math

    two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular

    asked on November 21, 2010
  30. English

    Either Chris or the new employee _________ the mail before Dolores or Charles ____. a. sort/arrives b. sort/arrive c. sorts/arrives d. sorts/arrive

    asked on May 30, 2018
  31. Math Estimating products

    Which Benchmark Fraction could you use to estimate the product of 36 x 11/16 ? PLEASE HELP ME ANSWER IM STUCK IDK

    asked on March 1, 2017
  32. Math

    Mr. Josie's investment decreased 25% in value. By what percent should its value increase so it can get back to its original value?

    asked on October 18, 2016
  33. math

    grant pays $0.10 per minute plus $5 per month for telephone long distance write an algebraic expression for m minutes of long distance calls in one month

    asked on October 1, 2015
  34. math

    a slice of pizza has 290 calories to find out how many write an algebraic expression to find out how many calories there are in a slices of pizza and b stalks of celery

    asked on October 1, 2015
  35. math

    the Nile River is the longest river in the world that 4160 miles a group of explorers travel along the entire now in xx days they traveled the same distance each day write an algebraic expression to find out each day's distance

    asked on October 1, 2015
  36. math

    the types of mini food players as it is triple plays in band is there in flute players write an algebraic expression to find out how many trumpet players there are

    asked on October 1, 2015
  37. algebra2

    is f(x)= x^3-x^2-9x+9 a one to one function

    asked on June 15, 2015
  38. algebra2

    How many solutions are there to the equation below? 220=2x-12x a.1 b. Infinitely many c.2

    asked on June 10, 2015
  39. Math

    There eight girls competing in an ice=skating competition. In how many ways can they finish in first, second and third place? 366 1,680 2,016 40,320 I think it is 2,016

    asked on May 17, 2015
  40. psychology

    PLEASE HELP LAST QUESTION.??? Among William James's contributions to the science of psychology is that he A. he wrote the first American text in psychology b.. developed a psychodynamic treatment for mental illness. c.experimented with classical

    asked on May 14, 2015
  41. chemistry

    A solution contains 3.10 g of solute in 10.4 g of solvent. What is the mass percent of the solute in the solution?

    asked on November 29, 2014
  42. math 5th

    in the following addition problem, each letter stands for a different digit. Find the value of X, Y, and Z XYZ + ZYX _______ YYZY

    asked on October 10, 2013
  43. Macroeconomics

    Consider the following data: The money supply in $1 trillion, the price level equals 2, and real GDP is $5 trillion in base-year dollars. What is the income velocity of money?

    asked on December 2, 2012
  44. College Physics

    Large boxes of pumpkins are set on a ramp to be unloaded out of a truck. The 300.0 lb boxes are set on the ramp which has an incline of 35 degrees. They must then be pushed to get started down the plane towards the bottom. If the coefficient of the static

    asked on August 30, 2012
  45. Physics

    Assume a block on unknown weight rests on an incline of 25 degrees and is initially not moving. What push (P) is required to start moving the block if the coefficient of static friction is 0.7?

    asked on August 30, 2012
  46. Physics

    Assume a block on unknown weight rests on an incline of 25 degrees and is initially not moving. What push (P) is required to start moving the block if the coefficient of static friction is 0.7?

    asked on August 30, 2012
  47. chemistry

    25mL of tap-water is titrated with .00500 M EDTA. 7.95mL of EDTA is required for complete reaction, Whatis the molarity of that total water hardness in the 25mL sample

    asked on May 1, 2012
  48. Chemistry

    At standard temperature a gas has a volume of 275ml if the temperature is increased to 130C buit the pressure is held constant what is the new volume?

    asked on April 19, 2011
  49. statistics

    John drives to work each morning and the trip takes an average of  = 38 minutes. The distribution of driving times is approximately normal with a standard deviation of  = 5 minutes. For a randomly selected morning, what is the probability that John's

    asked on April 17, 2011
  50. College history

    Explain the meetings that resulted in the Japanese seeing "Rolls-Royce,Rolls-Royce,Ford" and how was this part of Americans "clamoring for the outlawry of war? I need help with this question because I don't understand the question and what exactly it is

    asked on February 10, 2011
  51. algebra

    6x-7x=20 what is the value of x-

    asked on November 30, 2010
  52. physics

    the mean radius of the earth is 6,000,000 meters. Express this value in kilometers

    asked on September 18, 2010
  53. math

    From a point on a straight road, two cars are driven in opposite directions, one at 44 miles per hour and the other at 35 miles per hour. In how many hours will they be 237 miles apart?

    asked on September 13, 2010
  54. Science help plz

    1. In an experiment, you remove the nucleus from an amoeba. Predict what will happen to the amoeba and explain why. plz help What does the nucleus do? Those functions would be absent. Since this is not my area of expertise, I searched Google under the key

    asked on October 16, 2006
  55. Algebra

    The school that Cody goes to is selling tickets to the annual dance competition. On the first day of ticket sales the school sold 13 adult tickets and 8 child tickets for a total of $108. The school took in $106 on the second day by selling 2 adult tickets

    asked on May 4, 2020
  56. Philosophy

    If there is no flood and we still have to evacuate, then the hurricane must pose other dangers. Turn into symbolic form Would the answer be: (~p & q) -> r

    asked on September 27, 2018
  57. Philosophy

    The harness does not fit tightly, the belay device is broken, and the bolts are loose. Turn into symbolic form Would the answer be: (~p & q) & r

    asked on September 27, 2018
  58. English

    Identify each as fragment, run-on, comma splice, or sentence. One legend has it that an old lady tried to dry off her sopping wet dog by putting it in the microwave this legend also predates the microwave oven. a. fragment b. run-on c. comma splice d.

    asked on July 22, 2018
  59. Chemestry

    What is the molecular mass of a gas that has a density of 0.897 g/L if it exerts a pressure of 1.35 ATM and is that a temperature of 43.5°C?

    asked on May 15, 2018
  60. health

    how to achieve a nutrition?

    asked on October 2, 2017
  61. Math

    There were 49 students in a gym class.if 3/7 were boys and the rest were girls, how many boys were in the gym

    asked on August 21, 2017
  62. physics

    a store advertises carpet that costs $ 18.95 per square yard. how much does that carpet cost per square meter?

    asked on July 5, 2017
  63. math

    Alana picked p peaches. Michelle picked 18 times as many peaches as Alana. Write an expression that shows how many peaches Michelle picked.

    asked on May 24, 2017
  64. math

    Tucker bought 2 bags of beans. There are b beans in each bag. Write an expression that shows how many beans Tucker bought.

    asked on May 23, 2017
  65. Math

    Mr. Hernandez asked his students to estimate the area of the circular garden in front of the school. If the radius of the garden is 7 feet, which statement is closest to the area of the garden

    asked on January 31, 2017
  66. math

    ratio 1/3

    asked on November 30, 2016
  67. Math

    The point C(4 , -2 ) , D(2,1) and E(-1,-1) are translated onto C' and D' and E' by the vector find the coordinates of C' D' and E'

    asked on October 30, 2016
  68. math

    11 increased by twice Vanessa's age

    asked on October 25, 2016
  69. Math

    Mandy runs 4 km in 18 minutes if she planes to run in a 15 km race how long will it take her to complete the race

    asked on May 6, 2016
  70. Chemistry-nudge the

    A 4.30 g nugget of pure gold absorbed 298 J of heat. The initial temperature was 22.0°C. What was the final temperature? °C

    asked on February 25, 2016
  71. Chemistry

    A 4.30 g nugget of pure gold absorbed 298 J of heat. The initial temperature was 22.0°C. What was the final temperature? °C

    asked on February 25, 2016
  72. Chemistry

    Assuming ideal behavior, determine the mole fraction of acetone in a solution of acetone and water if the vapor pressure of acetone changed from 750mmHg to 735mmHg.

    asked on February 15, 2016
  73. Math

    Genrald and Michelle went on a 24-mile bike ride. They rode 1/4 of the distance before stopping. By lunchtime, they rode 5/8 of the total distance. How many miles did they have left to ride after lunch?

    asked on November 10, 2015
  74. maths

    How many red beads would there be in a pattern with 78 blue beads?

    asked on September 28, 2015
  75. math

    The greatest integer function ,shows below, is defined to be greatest________less than or equal to x. f(x)=[[x]]

    asked on June 15, 2015
  76. algebra2

    !@#$%^& many solutions are there to the equations below? 8x+47=8(x+5)

    asked on June 10, 2015
  77. algebra2

    how many solutions are there to the equation below? 6x+30+4x=10(x+3) I want to know how to do this problems Please and Thank you

    asked on June 10, 2015
  78. Algebra 2

    What is the solution to this equation? 4(x-8)+10=-10

    asked on June 10, 2015
  79. Science

    What kind of substance has properties that reflects light very well, warms up in my hand, flattens out when it hits with a hammer and conducts electricity?

    asked on March 16, 2015
  80. Trigonometry

    Can you please help me verify these? >sin7x-sin5x= tanx(cos7x-cos5x) >(1-cosx)cot(1/2x) = sinx >1+tanx tan(x/2) = secx Its very confusing because of all the double-half angle formulas >_

    asked on February 3, 2015
  81. Math: Finance

    Need help solving these finance questions? PV = C/r PV= C/r-g P= D/r-g 1st: Tom is 30 years old today. His salary next year will be $20,000. He forecasts salary growth of 5%/year and plans to retire at 60. 1) If the discount rate is 8%, what is the PV of

    asked on October 8, 2014
  82. chemistry

    how many moles of H2O are produced when 5.00 mols of oxygen gas are used

    asked on March 25, 2014
  83. math

    Finney & Company purchased $1,800 of merchandise on 5/6. The terms were 2/15 EOM. The sneakers were received on 5/20, sent FOB Shipping Point. Freight charges amounted to $45. What payment must be made by that date to take advantage of the discount?

    asked on March 16, 2014
  84. math

    Bert wants to make a larger version of a drawing he saw in a magazine. The drawing fits into a square with each side measuring 7 cm. If Bert makes his copy twice the size of the square measured in the original drawing, how much space will it cover on the

    asked on February 17, 2014
  85. physics

    f a police car is traveling along at 40 mi/hr and speeds up to 90 mi/hr to catch a speeder and it takes a total time of 1hr to finally catch the speeder. what was the police car's acceleration?

    asked on September 9, 2013
  86. Math

    Cepheid variables are vital for measuring the distances of relatively nearby galaxies. What is the probability of finding a cepheid variable star? State ALL your assumptions

    asked on April 30, 2013
  87. math

    ms.joliet gave a math quiz to see how her small group was doing. what score would make the median 90, the mode 85, and the range 20 if she had the numbers listed below 85,85,90,?,100,85,80,100,90

    asked on February 8, 2013
  88. Math

    Sally bought 3 tickets to the observation deck at the top of a skyscraper. She paid with a five-dollar bill and got 50 cents change. What was the cost of each ticket?

    asked on January 28, 2013
  89. English

    What public health issue starts the escalation of misery in "top of the food chain"?

    asked on December 26, 2012
  90. Business math/Finite

    How long to the nearest year, will it take an investment to double if it is continuously compounded at 4% per year

    asked on November 28, 2012
  91. World Geography

    When attacking Russia in 1941,Germany...

    asked on October 25, 2012
  92. physics

    How many significant figures are in 24.010

    asked on October 22, 2012
  93. physics

    a car skids to a halt at a rate of -9.4 m/s2. the skid marks measure 34 m. what speed was the car going when it slammed on the brakes?

    asked on September 17, 2012
  94. algebra 2

    how do i find the are of the region defined by |x|+|y| less than or equal to 5 and |x|+|y| greater than or equal to?

    asked on September 11, 2012
  95. Physics

    Large boxes of pumpkins are set on a ramp to be unloaded out of a truck. The 300.0 lb boxes are set on the ramp which has an incline of 35 degrees. They must then be pushed to get started down the plane towards the bottom. If the coefficient of the static

    asked on September 4, 2012
  96. science

    the patient reports numbness and tingling in the left lumbar area and pain in the contralateral femoral region

    asked on August 28, 2012
  97. math

    If Christopher wants to have the same number of hot dogs and buns, what is the minimum number of hot dogs he will have to buy?

    asked on July 30, 2012
  98. economics

    What do brokerage firms charge fees on

    asked on April 17, 2012
  99. Math

    I'm having a hard time with this problem. The book tells you the answer is 5, but I don't know how they got there. log(x+25)= 1+ log(2x-7)

    asked on April 9, 2012
  100. ap world history

    Can you compare North American racial ideologies and their effects on society with Latin American/Caribbean racial ideologies and their effects on society in 1500-1830?

    asked on March 21, 2012

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