Veronica

Popular questions and responses by Veronica
  1. 8th grade English/Language Arts

    1.)Why does the author of “Always to Remember” discuss Maya Ying Lin’s background? a.)to show that she experienced hardships b.)to appeal to Chinese-American readers c.)to show its influence on her design d.)to show her disinterest in architecture

    asked on October 28, 2014
  2. Chemistry

    Determine the concentration of CO32- ions in a 0.18 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.

    asked on June 18, 2014
  3. Chemistry

    What is the mass percent of an aqueous sodium hydroxide solution in which the molality of NaOH is 6.25m? The density of the solution is 1.2219 g/mL

    asked on May 31, 2014
  4. Math

    Every year in Delaware there is a contest where people create cannons and catapults designed to launch pumpkins as far in the air as possible. the equation y=15+110x-16x^2 can be used to represent the height, y, of a launched pumpkin, where x is the time

    asked on January 21, 2015
  5. Math

    Given the altitude of lakes in feet: –12, –9, –14, –39, –49, –49, –18, –43, find the mean, median, mode, and range

    asked on April 22, 2013
  6. scince

    as you drive down the highway you may see crows feeding on dead animals. as a result of this nutritional pattern,crows may be classified as

    asked on February 17, 2014
  7. Chemistry

    How many moles of KF are contained in 244 mL of 0.135 m KF solution? The density of the solution is 1.22 g/mL.

    asked on May 31, 2014
  8. Physics

    You are trying to overhear a juicy conversation, but from your distance of 15.0m, it sounds like only an average whisper of 25.0 dB. So you decide to move closer to give the conversation a sound level of 70.0 dB instead.How close should you come.

    asked on August 15, 2010
  9. math

    At a given time, Saturn was 9.1 x 10 to the 8th miles from the sun and the earth was 9.3 x 10 to the 7th miles from the sun. by what distance is one planet closer to the sun than the other planets?

    asked on January 14, 2015
  10. math

    an aquarium holds 6 1/4 gallons of water. the water level has dropped to 4/5 of this amount. how much water should be filled?

    asked on October 20, 2010
  11. Trigonometry

    Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then x=f^-1(y). Explain your

    asked on March 24, 2011
  12. Chemistry

    A sulfuric acid solution that is 65.0% H2SO4 by mass has a density of 1.55 g/mL at 20°C. What is the mass of h2so4 per liter of solution?

    asked on May 31, 2014
  13. Chemistry

    The potassium salt of benzoic acid, potassium benzoate, KC7H5O2, can be made by the action of potassium permanganate on toluene, C7H8. C7H8 + 2 KMnO4 --> 2MnO2 + KOH + H2O If the yield of potassium benzoate cannot be realistically be expected to be more

    asked on June 3, 2014
  14. Chemistry

    2Al(s)+3Cl2 = 2AlCl3 Limiting Reactant is Cl with 0.329mol. What is the maximum mass of aluminum chloride that can be formed when reacting 30.0g of aluminum with 35.0g of chlorine?

    asked on February 26, 2013
  15. Physics

    You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. You find that when a certain tool is pushed on a frictionless horizontal surface by a 12.2 N force, it moves 16.3 m in the first 2.30 s, starting from rest. You

    asked on September 19, 2006
  16. Physics

    A 56kg student runs at 5m/s, grabs a hanging rope and swings out over a lake. He releases the rope when his velocity is zero. The length of the rope is 10m, what is the angle when he releases the rope? (The person swings from the centre to the right).

    asked on May 16, 2016
  17. Chemistry

    Strontium metal is responsible for the red color in fireworks. Fireworks manufacturers use strontium carbonate, which can be produced by combining strontium metal, graphite (C), and oxygen gas. The formation of one mole of SrCO3 releases 1.220 x 103 kJ of

    asked on December 3, 2012
  18. chemistry

    what is the solubility of potassium nitrate (KNO3) in 100.0g of water at 80.0 degrees celcius?

    asked on April 7, 2011
  19. Chemistry

    How much 5 M KOH must be added to 1.0 L of 0.1 M glycine at pH 9.0 to bring its pH to exactly 10.0? The amino group of glycine has a pKa of 9.6.

    asked on October 1, 2017
  20. chemistry

    calculate the work done when 50.0g of tin dissolves in excess acid at 1.00 atm and 25 degrees c.

    asked on October 24, 2010
  21. science

    A box weighing 180 newtons is hanging by rope as shown in the figure. Find the tension T¿.

    asked on September 15, 2015
  22. Calculus (Urgent Help)

    Okay, I need major help! Can someone tell me if these statements are true or false ASAP please. Thank you. 1. If ƒ′(x) < 0 when x < c then ƒ(x) is decreasing when x < c. True 2. The function ƒ(x) = x^3 – 3x + 2 is increasing on the interval -1 < x <

    asked on July 25, 2008
  23. Chemistry

    Manganese trifluoride, MnF3,can be prepared by the following reaction. 2 MnI2 (s) + 13 F2 (g) ---> 2 MnF3(s) + 4 IF5(l) What is the minimum number of grams of F2 that must be used to react with 12.0 g of MnI2 if the overall yield of MnF3 is no more than

    asked on May 26, 2014
  24. Chemistry

    A 0.500L vessel initially contains 0.0125 mol of H2S2 . Find the equilibrium concentrations of H2 and S2. Kc = 1.67 x 10^-7 2 H2S 2 H2 + S2

    asked on June 7, 2014
  25. Chemistry

    Iron (III) Nitrate reacts with sodium carbonate to form a precipitate. Be sure to indicate oxidation states and the precipitate. Skeletal Equation: Ionic Equation: NET Ionic Equation: Balanced Equation: Spectator Ions: I got the skeletal equation, but I

    asked on January 21, 2020
  26. Trigonometry

    Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then x=f^-1(y). Explain your

    asked on March 24, 2011
  27. Chemistry

    What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.030 M CH3CO2Na? Assume that the volume of the solutions are additive and that a = 1.8 × 10-5 for CH3CO2H.

    asked on April 19, 2013
  28. Chemistry

    What is the maximum mass of aluminum chloride that can be formed when reacting 30.0g of aluminum with 35.0g of chlorine

    asked on February 26, 2013
  29. Physics

    A 56kg student runs at 5m/s, grabs a hanging rope, swings out over a lake. He releases the rope when his velocity is zero. The angl when he releases the rope is 29.25degrees. What is the tension in the rope just before he releases it? What is the maximum

    asked on May 16, 2016
  30. math

    A flagpole casts a 32-ft shadow. A boy who is 6 feet tall is standing near the flagpole casting a 16-ft shadow. They form similar triangles. How tall is the flagpole?

    asked on December 1, 2012
  31. Science

    A player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 m/s. What is the horizontal velocity component of the ball to the nearest tenth of a m/s?

    asked on March 17, 2010
  32. Chemistry

    Which of the following compounds has an atom with an unfilled valence shell of electrons? A) H3O+ B) BF3 C) CH3OH D) NaI

    asked on September 29, 2016
  33. Statistics

    In one study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one year after the treatment, and 32 were not smoking one year after the treatment. Use a 0.10 significance level to test the claim that among the smokers who

    asked on May 29, 2007
  34. algebra

    Translate the phase into an algebraic expression 8 more than twice Chau's age

    asked on November 25, 2018
  35. Chemistry

    I posted this question before and the answer is suppose to be 6.8 L but I keep getting 6.12 L dinitrogen pentoxide n2o5 decomposes by a first-order decomposition in chloroform solvent to yield NO2 and O2. The rate constant at 45°C is 6.2 x 10^-4 mins^-1.

    asked on June 3, 2014
  36. Chemistry

    How many grams of potassium nitrate, KNO3 are required to make 250 mL solution with a molarity of 0.40 M?

    asked on March 21, 2016
  37. Science

    Why are aboriginal clan systems considered human social systems?

    asked on September 6, 2014
  38. Chemistry

    I posted this last night, A 0.500L vessel initially contains 0.0125 mol of H2S2 . Find the equilibrium concentrations of H2 and S2. Kc = 1.67 x 10^-7 2 H2S 2 H2 + S2 I have come up with this equation so far, but I am lost now because I don’t even know if

    asked on June 8, 2014
  39. Chemistry

    If you take a 10.0-{mL} portion of the stock solution and dilute it to a total volume of 0.700 L, what will be the concentration of the final solution?

    asked on October 7, 2010
  40. Maths ... help

    Paloma has 3 jackets, 6 scarves, and 4 hats. Determine the number of different outfits consisting of a jacket, a scarf, and a hat Paloma can wear.

    asked on November 27, 2008
  41. algebra

    a bag contains 4 red chips, 2 blue chips and 5 green chips. A chip is randomly removed from the bag, and then without replacing the first chip, a second chip is removed. What is the probability that both of the chips selected from the bag were blue?

    asked on May 3, 2011
  42. Trigonometry

    How do you express sin4x as a trigonometric function of x?

    asked on February 15, 2010
  43. Chemistry

    dinitrogen pentoxide n2o5 decomposes by a first-order decomposition in chloroform solvent to yield NO2 and O2. The rate constant at 45°C is 6.2 x 10^-4 mins^-1. Calculate the volume of O2 obtained from the reaction of 1.00 mol N2O5 at 45°C and 770 mmHg

    asked on June 3, 2014
  44. Chemistry

    dinitrogen pentoxide n2o5 decomposes by a first-order decomposition in chloroform solvent to yield NO2 and O2. The rate constant at 45°C is 6.2 x 10^-4 mins^-1. Calculate the volume of O2 obtained from the reaction of 1.00 mol N2O5 at 45°C and 770 mmHg

    asked on June 3, 2014
  45. Calculus

    Suppose that a car can accelerate from 30 mph to 50 mph in 4 seconds. Assuming a constant acceleration, find the acceleration (in miles per second squared) of the car and find the distance traveled by the car during the 4 seconds.

    asked on January 4, 2018
  46. Riddle

    There is one pond in which one lotus gets doubled everyday. In 20 days pond is half filled. so how many days it will take to get full completely? Thx the answer is 21?? yes. Double of half-full is full.

    asked on June 4, 2007
  47. earth science

    how are well-developed soils similar to young soils? how are they different?

    asked on January 24, 2009
  48. Chemistry

    How much 5 M KOH must be added to 1.0 L of 0.1 M glycine at pH 9.0 to bring its pH to exactly 10.0? The amino group of glycine has a pKa of 9.6.

    asked on September 30, 2017
  49. History

    What is the significance of the stupas and monasteries Asoka caused to be built throughout India? A. They were protested by many Hindus. B. They were public works that brought jobs to many. C. They honored ancestors that brought joy to Indians. D. They

    asked on December 5, 2019
  50. Physics

    During each heart beat, approximately 70cubic cm of blood is from the heart at an average pressure of 105mmHg. Calculate the power output of the heart, in watts, assuming 70 beats per minute.

    asked on May 17, 2016
  51. chemistry

    How would you prepare 500mL of 6.0M NaOH solution using solid NaOH pallets?

    asked on August 8, 2013
  52. math

    prove: 2sinx+sin2x = 2sin^3(x)/1-cosx

    asked on January 6, 2010
  53. English

    Does the following mean that the job is done on August 30, 2019? "Schedule: 30 hours per week, flexible, Monday through Friday, 8:30am to 5:00pm (through August 30, 2019)" Thanks!

    asked on June 22, 2019
  54. algebra

    Janet invested $23,000, part at 6% and part at 17%. If the total interest at the end of the year is $2,260, how much did she invest at 6%? Let x be the amount invested at 6% Then 23,000 - x is invested at 17%. 0.06 x + 0.17 (23,000 - x) = 2260. That

    asked on June 5, 2007
  55. Physics

    A Carnot engine uses a steam boiler at 100°C as the high-temperature reservoir. The low-temperature reservoir is the outside environment at 16.5°C. Energy is exhausted to the low-temperature reservoir at a rate of 185 W. (c) How much steam will it cause

    asked on October 12, 2011
  56. MATH

    A HUMMINGBIRD BEATS IT WINGS 53X SEC HOW MANY TIMES DOES THE HUMMINGBIRD BEATS IN 5 SEC

    asked on September 11, 2014
  57. English

    Can I use the term "out of town" to indicate that I am traveling to a different country?

    asked on August 10, 2019
  58. Chemisty

    A 0.411 g sample of powdered copper mixed with an inert, soluble additive was fully consumed by 23.4mL of 0.602M nitric acid, producing copper (II) nitrate, water, and nitric oxide. What is the percent copper by mass in the sample? 3Cu + 8HNO3 = 3Cu(NO3)2

    asked on June 17, 2014
  59. science

    a consumer-producer relationship is best illustrated

    asked on February 17, 2014
  60. Chemistry

    will acidic foods cooked in a cast iron skillet become Fe+2 enriched because of a reaction beteen the acidic food and the skillet?

    asked on November 3, 2011
  61. PHYSICS

    The velocity of a diver just before hitting the water is -8.7 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.89 s of the dive?

    asked on September 10, 2010
  62. statisitcs

    The combined math and verbal scores for students taking a national standardized examination for college admission is normally distributed with a mean of 560 and a standard deviation of 180. If a college requires a student to be in the top 40 % of students

    asked on October 23, 2014
  63. trig, precalc, math, algebra, trigonometry

    Rewrite: tan(cos^−1 (v)) as an algebraic expression in v. Please help me understand.

    asked on May 5, 2016
  64. English

    What does the following statement mean? "Late fee becomes due when rent is not received by the end of the 4th day of the rental period." Does this mean that, for example, if the monthly rental period is from September 1 to September 30, the late fee is due

    asked on August 5, 2019
  65. physics

    A cannonball is shot from a cannon on a cliff at a height of 18.9 m at a ship on the ocean. The cannonball is shot with an initial velocity of 15.1 m/s at an angle of 24.7 degrees above the horizontal. #1- What is the total maximum height of the cannonball

    asked on November 24, 2009
  66. AP Physics

    A car traveling 92 km/h is 130 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck?

    asked on September 5, 2014
  67. physics

    driving on a hot day causes tire pressure to rise. what is the pressure inside an automobile tire at 288, if the tire has a pressure of 30 psi at 318k? Assume that the volume and amount of air in the tire remain constant

    asked on November 21, 2011
  68. History

    what kind of social structure did the Huang he have? I cant find anything on the internet to help me dose anyone have an answer or an article I can read?

    asked on December 13, 2019
  69. math

    How did the angle lose his job?

    asked on June 17, 2019
  70. 6th grade

    what is an function

    asked on April 23, 2010
  71. maths,science,geography and life science

    What is restorative justice intention in process of human rights?

    asked on May 8, 2016
  72. Chemistry

    At 20°C, an aqueous solution that is 18.0% by mass in ammonium chloride has a density of 1.0512 g/mL What is the molarity of ammonium chloride in the solution?

    asked on May 31, 2014
  73. chemistry

    What is the molarity of a 200. mL solution in which 0.20 mole of sodium bromide is dissolved?

    asked on March 10, 2020
  74. Chemistry

    Based on the chemical reaction: N2(g) + 3H2(g) → 2NH3(g), which substance takes up the most space? a) 2NH3(g) b) 3H2(g) c) All of the substances have the same volume d) N2(g)

    asked on February 4, 2020
  75. math

    a factory produces 6 motorcycles in 9 hours write a proportion and solve it to find how many hours it takes to produce 16 motorcycles. help me please!

    asked on April 6, 2011
  76. Chemistry

    Consider the following equilibrium. 2 SO2 (g) + O2 (g) 2 SO3 (g) The equilibrium cannot be established when __________ is/are placed in a 1.0-L container.

    asked on June 9, 2014
  77. Chemistry

    Calcium carbonate, CaCO3(s), decomposes upon heating to give CaO(s) and CO2(g). A sample of CaCO3 is decomposed, and carbon dioxide is collected in a 250 mL flask. After decomposition is complete, the gas has a pressure of 1.3 atm at a temperature of

    asked on May 5, 2011
  78. PLEASE HELP ME! PLEASE!

    1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y = -7 9x + 2y = 38 Answer: (4,1) 3) 7r + 3s = 13 14r - 15s = -16 Answer: (1,2) 4) 2x - 7y = 42 4x - 14y = 64 Answer: No Solution ?? 5) 9x + 12y = 15 3x + 4y = 5 Answer: Identity ?? 6) 2 = 4s - 3t 2 = 12s

    asked on February 25, 2009
  79. calculus

    radioactive Carbon 14 in a dead organism decays according to the equation A=A e^.000124t where t is in years and A0 is the amount at t=0. Estimate the age of a skull uncovered in an archeological site if 10% of the original Carbon 14 is still present.

    asked on July 3, 2015
  80. chemistry

    To what volume should 100ml of any weak acid (HA) with a concentration of 0.2M be diluted to double the percentage ionization?

    asked on April 19, 2013
  81. Chemistry

    Objectives To determine the molecular weight of a volatile liquid. Discussion [This laboratory exercise was adapted from one in Beran and Brady's Laboratory Manual for General Chemistry , John Wiley & Sons, 1982] The Dumas Method for determining the

    asked on November 27, 2012
  82. Chemistry

    How many moles of HNO3 are present in 35.0 mL of a 2.60 M solution of nitric acid?

    asked on October 7, 2010
  83. Physics

    A plutonium- 239 nucleus initially at rest undergoes alpha decay to produce a uranium-235 nucleus. The uranium-235 nucleus has a mass of 3.90 x 10^-25 kg and moves away with a speed of 2.62 x 10^5 m/s. Determine the minimum wage electric potential

    asked on May 22, 2017
  84. Chemistry

    The of hydroxylamine, , is . A buffer solution is prepared by mixing 120 of a 0.34 hydroxylamine solution with 60 of a 0.25 solution.Solve for the PH

    asked on April 19, 2013
  85. Algebra

    A high school has 900 students, 40% of whom are drama majors. A second high school has a 75% drama majors population. The school board plans to merge the two schools into a Performing Arts magnet school that will then have a 52.5% drama majors student

    asked on August 31, 2009
  86. Chemistry

    If 150 mg of aspirin are rinsed with three portions of 10 mL of water at 25 degrees Celsius, how much aspirin is recovered? Solubility of aspirin in water at 25 degrees Celsius is one gram of aspirin per 300 mL of water.

    asked on May 20, 2014
  87. Math

    A swing has a maximum height of 2 m and a minimum height of 0.5 m and it takes 3 seconds to get from the maximum height to the minimum height. Approximate the instantaneous rate of change 1 second into the fall using the difference quotient when h is 0.01.

    asked on November 29, 2013
  88. statistics

    Suppose a random sample of 80 measurements is selected from a population with a mean of 65 and a variance of 300. Select the pair that is the mean and standard error of x.

    asked on February 26, 2013
  89. Chemistry

    What are the independent and dependent variables when determining the percentage water in hydrated copper sulfate salts, while designing the experiment? The question states 'Select sensible amounts to make the independent variable the limiting reagent and

    asked on March 8, 2010
  90. simple intrest

    My daughter brought home a work sheet and I have no clue where to begin to help her and she seems to have no clue either. the questions are 1. Find the final balance in each account. $800 at 4.25% simple intrest for 6 years 2. $2,000 at 6% compounded

    asked on February 20, 2007
  91. Physics HELP!

    a rock is thrown vertically upwards with an initial velocity of 30 m/s. Neglecting air resistance, calculate a) the maximum height reached b) the time taken to reach maximum height PLEASE help with this

    asked on October 7, 2006
  92. Chemistry

    (Use the information in the table below. Show the half reactions and the potentials for each half reaction.) Determine whether the following redox reaction is spontaneous as written. 2Al(s) + 3Zn2+(aq) → 2Al3+(aq) + 3Zn(s) Reduction Potentials at 25°C

    asked on May 8, 2020
  93. chemistry

    A hot metal cylinder is placed in water at room temperature in a closed system. Which statement is NOT true concerning heat flow? a) The metal exhibits an endothermic change. b) The final temperature of the metal and the water will be the same. c) Water

    asked on March 24, 2020
  94. Informal logic

    Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater. The reasoning above is flawed because the evidence does not suggest

    asked on July 14, 2013
  95. Chemistry

    100g of a saturated solution of sodium nitrate at 43°C is cooled quickly with stirring to 10°C. How many grams of the solute will crystallize?

    asked on April 8, 2012
  96. chemistry

    The following reaction: SO2 (g) SO3 (g) + NO (g) having reached a state of equilibrium, was found to contain 0.40 M SO3, 0.30 M NO, 0.15 M NO2, and 0.20 M SO2. Calculate the equilibrium constant for this reaction. Describe the direction ad extent of a

    asked on April 17, 2020
  97. chemistry

    Show how to calculate the pH of pure water or a neutral solution.

    asked on April 28, 2020
  98. algebra 1

    The perimeter of a triangle is 62 cm. If the second side is twice as long as the first side, and the third side is 12 cm longer than the second side, what is the length of the longest side of the triangle?

    asked on April 21, 2011
  99. Trigonometry

    Okay, Assume the triangle has the given measurements. Solve for the remaining sides and angles. A = pi/6; a = 17.4; b = 19.6

    asked on April 27, 2011
  100. grammar

    Farmers soon plant some vegetables what is adverb

    asked on March 27, 2008

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