Val

Popular questions and responses by Val
  1. math

    A pilot can fly an MD-11 2160 miles with the wind in the same time she can fly 1920 miles against the wind. If the speed of the wind is 30 mph, find the speed of the plane in still air.( Source: Air Transport Association of America)

    asked on December 4, 2012
  2. English Help Asap!!

    Selection 1 There is good news and bad news about grizzly bears in the American West. The good news? Their numbers have been increasing in recent years. In 1975, grizzlies made the threatened-species list under the federal Endangered Species Act. The bad

    asked on May 25, 2016
  3. Reading

    In which sentence about A Christmas Carol is the word meager used correctly? a) The Ghost of Christmas Future used his meager finger to point to Scrooge's tombstone. b) Scrooge gave Adam a meager amount of money to reward him for buying an enormous turkey.

    asked on May 16, 2016
  4. chemistry

    how many grams of potassium chlorate must be used to produce 30.0g of oxygen?

    asked on January 28, 2012
  5. james madison high school algebra

    Can anyone help me with Ashworth high algebra 1 part 2 I really need some help I'm not good with math

    asked on May 23, 2014
  6. Chemistry

    Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq). Refer to table 1 and table 2. (a) What is the initial pH of the 0.20 M C6H5COOH(aq)? Using ICE i found to be 2.46 The rest I do not know how to set up or solve... (b) What is the

    asked on March 12, 2010
  7. Chemistry--help!

    Given the equilibrium: HCN(aq) + H2O(l) ←→ H3O+(aq) + CN-(aq) ΔH >0; Ka = 4.0 x10-10 What happens to the concentration of hydrogen cyanide [HCN] when the following stresses are placed on the system at equilibrium? NaCl is added ---> Stays the Same but

    asked on March 9, 2010
  8. Math

    Area of an arc with diameter of 7cm and an angle of 60degrees

    asked on June 20, 2016
  9. College Chemistry

    how many liters of ethanol contain 1.5 kg of ethonal?

    asked on September 14, 2014
  10. Science

    Where is most of the surface water on earth found? a) as freshwater in rivers b) as frozen water near the pole c) as groundwater under the surface d) as salt water in oceans I think its either A or D. Am I correct?

    asked on May 12, 2016
  11. Math

    What is the surface area of the given figure? Side: 26 Side: 28 Height: 10 Width: 36 a) 2,564cm^2 b) 2,276cm^2 c) 2,184cm^2 d)1,160cm^2

    asked on May 12, 2016
  12. Physics

    After this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. The bird repeats the back and forth trips until the runner reaches the finish line. How far does

    asked on August 20, 2015
  13. Math

    Multiply each expression. 6(h-4) I know you multiply the numbers 6*4 but where do you go from there? I am so frustrated

    asked on February 2, 2015
  14. Chemistry

    Having some confusion with this question....I have the answers, just not able to reach them. A flask of volume 5L is evacuated and 43.8 g of solid N2O4 is introduced at 77K. The sample is then warmed to 298K during which the N2O4 vaporizes and some

    asked on April 24, 2010
  15. 8th grade algebra

    the length of a rectangular garden is 5 feet longer than its width. The garden is surrounded by a 2-foot-wide-sidewalk. The sidewalk has an area of 76 square feet. Find the dimensions of the garden

    asked on February 11, 2010
  16. Math

    The graph below was drawn with output on the vertical axis and input on the horizontal axis. What does the graph indicate about the relationship between the input and the output?

    asked on May 4, 2016
  17. Social Studies

    How are the cultures of South America like the cultures in Mexico? How are they different? I just need one sentence of how they are similar and different. Thanks :)

    asked on April 26, 2016
  18. Physics

    Tom is sladding down a hill. His sled starts from rest, and undergoes a uniform acceleration of 2.0 m/s2 down the slope. What is his speed after 1 second?, after 2 seconds? after 3 seconds?

    asked on September 4, 2015
  19. science

    How many kcal of heat energy are removed from the body with every 1 L of sweat?

    asked on May 17, 2015
  20. Algebra help thx

    Pani says she should get $3 discount on the price of each shirt and $3 discount on the price of each pair of jeans. Part 1 write and simplify an expression to find the pint she would pay if this is true. Part 2 if you were the shop owner, how would change

    asked on January 7, 2015
  21. Algebra 1 thx

    Antonia is saving for a video game. On the first day, she saves two dollars in her piggy bank. Each day after that, she doubles the number of dollars she saved on the previous day. How many dollars does she save on the sixth day?

    asked on December 15, 2014
  22. Algebra 1 thx

    Hadley's softball team has a phone tree in case a game is canceled. The coach calls 3 players. Then each of those players calls 3 players, and so on. How many players will be notified during the third round of calls? Please help answer

    asked on December 15, 2014
  23. math

    How many feet will it take a car traveling at 120 mph to stop?

    asked on March 23, 2013
  24. calculus

    give an example of a function that has: a) only one point of discontinuity b) exactly two ponts of discontinuity c) an infinite number of discontinuity give an example of a function that is: a) continuous at every point b) discontinous at every point i am

    asked on September 25, 2011
  25. trig

    A tower is supported by a guy wire from the top of the tower to the ground 16 ft from its base. The wire makes an angle of 62 with the ground. The length of the wire is a. 30.09 ft b. 18.12 ft c. 28.41 ft d. 34.08 ft

    asked on August 12, 2011
  26. math

    Justin had 44 dollars before spending n dollars on jeans. How much money remains

    asked on May 16, 2010
  27. 4th grade math

    if a rug's perimeter is 17cm and the area is 13cm, what are the reasurments for the length and width?

    asked on April 19, 2010
  28. chemistry

    For the first-order reaction A => 3 B + C, when [ A]0 = 0.014 mol·L-1, the concentration of B increases to 0.017 mol·L-1 in 2.7 min. (a) What is the rate constant for the reaction expressed as the rate of loss of A? I found this to be .1923, which I know

    asked on March 31, 2010
  29. Chemistry

    When 442 mg of NO2 is confined to a 150. mL reaction vessel and heated to 300°C, it decomposes by a second-order process. In the rate law for the decomposition of NO2, k = 0.54 1/(M·s). A) what is the initial reaction rate? B) what is the reaction rate

    asked on March 31, 2010
  30. Chemistry --Need Help!!

    Ive posted twice, but no one's answered yet...I could really use any kind of guidance--particularly for the 1st question :) 1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the ƒ´E of the overall cell?

    asked on March 24, 2010
  31. Chemistry

    For the following electrochemical cell, what is the correct, balanced reaction? Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s) A. Cu(s) + Cu2+(aq) → Ag+(aq) + Ag(s) B. Cu(s) + Ag+(aq) → Cu2+(aq) + Ag(s) C. Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s) D. Cu2+(aq) +

    asked on March 21, 2010
  32. Chemistry

    Could someone explain the reasoning for this? 6) Which of the following is a false statement about ALL reactions in equilibrium? a) Increasing temperature shifts the reaction toward the products in an endothermic reaction b) Temperature effects on the

    asked on March 8, 2010
  33. Math

    Angle ab&c measures 120 degrees. It is divided into two smaller angles, which are labeled x & y. The value of x is 4 times the value of y, what is the value of x?

    asked on February 28, 2020
  34. Math

    How can a multiplication model help you solve problem 1

    asked on April 7, 2019
  35. Calculus 1

    At 2:00 pm a car's speedomoter reads 20 mph, and at 2:10 pm it reads 25 mph. Use the Mean Value Theorem to find an acceleration the car must achieve.

    asked on October 15, 2017
  36. Science (Biology)

    I think the answer is (e) but I'm not certain. In Drosophila melanogaster the genes for yellow body colour and white eye colour are linked this means that: a. They can produce only one phenotype b. They cannot separate c. They produce more parental types

    asked on June 23, 2017
  37. math

    toby buys a new mp3 player for a price of 45.50 what is the total amount of his credit card is charged if the sales tax is 7%

    asked on January 30, 2017
  38. Math

    Marie has scores of 65,72,80,74, and 85 on five math tests. The final will count as two tests in determining each students overall average. What score must Marie get on the final if she wants her overall average to Ben 80?

    asked on October 25, 2016
  39. Physics

    What is physics

    asked on July 30, 2016
  40. Chemistry

    For the system, H2(g) + X2(g) 2HX(g), Kc = 24.4 at 300 K. A system was charged with 2.00 moles of HX in a 3.00 liter container. The catalyst was introduced using a remote unit, and the system was allowed to come to equilibrium. How many moles of H2(g) will

    asked on July 20, 2016
  41. Math

    Order the volumes from least to greatest. 1) 56.18 2) 43.75 3) 9 4) 10.92

    asked on June 8, 2016
  42. Reading

    Read this sentence. For people who are more comfortable with just one method to do something, this can seem a bit much. Which is the MOST vivid phrase to replace the last three words. a) rather overwhelming b) more than is necessary c) quite funny d) too

    asked on June 2, 2016
  43. Writing

    I'm trying to write a compare and contrast essay about animal cells and plant cells. I need differences and similarities between them. Could anyone please help me? Oh, and it would be nice if you started me off with a few sentences so I would continue it.

    asked on May 26, 2016
  44. Math

    Which is the best display for the set of numbers of daily 911 calls made in a month, if you want to be able to identify the mode? a) histogram with intervals of 5 b) histogram with intervals of 3 c) line graph d) line plot I think its either A or D

    asked on May 18, 2016
  45. Math

    Which is the best display for the set of numbers of daily 911 calls made in a month, if you want to be able to identify the mode? a) histogram with intervals of 5 b) histogram with intervals of 3 c) line plot d) line plot I think its either A or D

    asked on May 18, 2016
  46. Math!!

    Find the lateral area for the square pyramid. Height: 22 Base: 8 Side: 8 I know the answer, I just want someone to show me how to actually calculate it to find the answer. Thanks :)

    asked on May 12, 2016
  47. Math Help!!

    The time between a lighting flash and the following thunderclap may be used to estimate, in kilometers, how far away the storm is. How far away is the storm if 12 seconds elapse between the lighting and the thunderclap? a) 4 kilometers b) 5 kilometers c)

    asked on May 9, 2016
  48. math

    find the distance (0,0) and (5,8) round the answer to the nearest hundred how do you calculate distance

    asked on May 5, 2016
  49. Science

    Hello, I was just wondering what it means when something says "a white flower is crossed with a red flower" Could anyone please tell me?

    asked on May 4, 2016
  50. Reading

    In which of these lines is the meaning of the word "intercede" best expressed? A) the attacker interceded between the goal and the goalie. B) In court cases, attorneys intercede on their clients behalf.**** C) If you don't agree with someone, you should

    asked on April 28, 2016
  51. Physics

    A person weighs 600 N on Earth. What is the person's mass?

    asked on December 17, 2015
  52. Physics

    In the hydrogen atom, the distance between the electron and the proton is 5x10^-11m. a)Compute the magnitude of the gravitational force FG between the electron and the proton b)Compute the magnitude of the electrical force FE between the electron and the

    asked on December 14, 2015
  53. psychological test and measurements

    if the range of one or both variables is restricted, the resulting correlation coefficient will likely: a.be decreased b. be increased c. remain the same d. either increase or decrease depending on the calculations. i chose c

    asked on September 28, 2015
  54. psychological test and measurements

    the majority of assessment information collected by most teachers comes from

    asked on September 25, 2015
  55. psychology

    _is often considered the father of mental test and measurements. a. Carl Gauss, b. Clark Wissler c.Sir Francis Galton d.Alfred Binet. My answer is c

    asked on September 25, 2015
  56. maths

    a man swims at a speed of 50 m/min in stil water, swims 100m against the current and 100m with the current. if the difference between the two times is 3 m 45 s, find the speed of the current

    asked on July 21, 2015
  57. Algebra 1

    Please list five numbers that have 3, 5, and 7 as prime factors. Please help answer thanks

    asked on January 5, 2015
  58. Algebra please help answer

    Brandon has 32 stamps. He wants to display the stamps in rows, with the same number of stamps in each row. How many different ways can he display the stamps? Please help answer and explain

    asked on January 5, 2015
  59. Algebra 1

    The square tile shown has a side length of 10.5 inches. What power can you write to represent the area of the tile? Write the power as an expression with a base and exponent, and then find the area of the square.

    asked on December 15, 2014
  60. college physics

    A block of mass 21.5 kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 3.79 m/s2. what is the tension in the cable? what is the magnitude of the net force acting on the mass?

    asked on July 1, 2014
  61. college physics

    A block of mass 21.5 kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 3.79 m/s2. what is the tension in the cable? what is the magnitude of the net force acting on the mass?

    asked on June 30, 2014
  62. dynamics of catering

    It's sometimes permissible to eat _____ with your fingers. A.fried clams B.soft boiled eggs C.hot dogs D.asparagus

    asked on March 17, 2014
  63. math

    the sample of selected men have the average weight of 180 lb with the standard deviation of 30 lb. For a 0.95 degree of confidence find confidence interval for the mean of the whole population, assuming the normal weight distribution and the following

    asked on August 13, 2013
  64. science

    property of muscle in which the strength of its contraction can vary from weak to strong

    asked on January 31, 2013
  65. science

    nerve fiber control over muscle or gland effector activity

    asked on January 31, 2013
  66. biology

    property of muscle in which the strength of its contraction can vary from weak to strong

    asked on January 31, 2013
  67. biology

    nerve fiber control over muscle or gland effector activity

    asked on January 31, 2013
  68. chem

    What is the pH of a 0.22 M solution of HClO4?

    asked on December 6, 2012
  69. math

    In January 2010, the Burj Khalifa Tower officially became the tallest building in the world. This tower has a curtain wall (the exterior skin of the building) that is approximately 133,500 square yards. Convert this to square feet.

    asked on December 5, 2012
  70. math

    In January 2010, the Burj Khalifa Tower officially became the tallest building in the world. This tower has a curtain wall (the exterior skin of the building) that is approximately 133,500 square yards. Convert this to square feet.

    asked on December 5, 2012
  71. math

    Currently, the Toyota Corolla is the best selling car in the world. Suppose that during a test drive of two Corollas, one car travels 224 miles in the same time that the second car travels 175 miles. If the speed of the first car is 14 miles per hour

    asked on December 5, 2012
  72. math

    Currently, the Toyota Corolla is the best selling car in the world. Suppose that during a test drive of two Corollas, one car travels 224 miles in the same time that the second car travels 175 miles. If the speed of the first car is 14 miles per hour

    asked on December 4, 2012
  73. math

    Currently, the Toyota Corolla is the best selling car in the world. Suppose that during a test drive of two Corollas, one car travels 224 miles in the same time that the second car travels 175 miles. If the speed of the firstvcar is 14 miles per hour

    asked on December 4, 2012
  74. math

    what is the dross product of c/28=49/16

    asked on November 30, 2012
  75. math

    2*6=4, 4*1=7 8*3=1 find value of 5*5

    asked on August 20, 2012
  76. Statisics

    The state lottery claims that its grand prize is $1 million. The lucky winner will receive $50,000 upon presentation of the winning ticket plus $50,000 at the end of each year for the next 19 years. Why isn't this really a million-dollar prize? What would

    asked on July 19, 2012
  77. Statisics

    The state lottery claims that its grand prize is $1 million. The lucky winner will receive $50,000 upon presentation of the winning ticket plus $50,000 at the end of each year for the next 19 years. Why isn't this really a million-dollar prize? What would

    asked on July 18, 2012
  78. Statistics

    The state lottery claims that its grand prize is $1 million. The lucky winner will receive $50,000 upon presentation of the winning ticket plus $50,000 at the end of each year for the next 19 years. Why isn't this really a million-dollar prize? What would

    asked on July 15, 2012
  79. Enviromental Anthro.

    1. How do Fairhead and Leach explain the forest-savanna mosaic in West Africa? a) villagers planted trees and told stories about them b) corporations began logging and mining in the region c) the state prohibited slash and burn farming and created a

    asked on May 7, 2012
  80. Enviromental Anthro.

    What effects do herding in East Africa and ranching in North America have on those two environments?

    asked on May 7, 2012
  81. trig

    cos x/1+sin x + 1+sin x/ cos x= 2sec x

    asked on March 12, 2012
  82. bilology

    peroxidase cannot be used to break down chemicals such as starch. why?

    asked on January 30, 2012
  83. chemistry

    how many grams of potassium chlorate must be used to produce 30.0g of oxygen?

    asked on January 28, 2012
  84. health

    You have been hired as an administrator in an ambulatory care setting. What factors would you expect to encounter and how would you deal with them?

    asked on September 3, 2011
  85. statistics

    For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: (a) a sample of 10 with a mean of 44, (b) a sample of 1 with a mean of 48. The

    asked on June 19, 2011
  86. math

    What is the greatest and least possible product you can make using the digits 1,3,5,6 and 7 in the multiplication problem below? Use each digit only once,

    asked on February 24, 2011
  87. physical science

    change 85 kilograms to grams change 45 meters to centimeters change 70 nanometers to meters

    asked on November 20, 2010
  88. Physical science

    Acceleration is F/S A=F/M this is: direct inverse not sure both direct &inverse

    asked on November 20, 2010
  89. Physical science

    determine the velocity of a toy jeep if it has a distance of 80 meters and a time of 8 seconds?

    asked on November 20, 2010
  90. Physical Science

    force of a toy jeep if the mass=50kg & is traveling at 4m/s& the radius is 50 centimeters.

    asked on November 20, 2010
  91. 6th Grade English

    Hello, I am looking at the subject of no-count nouns. Which says that it does not have a singular or a plural form. The school book gives Paper for an example. But since you can say "papers" which is plural. How can paper be a non-count noun?

    asked on October 3, 2010
  92. physics

    A stone thrown off a bridge 20 m above a river has an initial velocity of 12 m/s at an angle of 450 above the horizontal. a. What is the range of the stone? b. At what velocity does the stone strike the water? (magnitude and direction)

    asked on September 26, 2010
  93. 6th Grade Math

    How can you find an unknown factor in a multiplication problem? Is the answer: divide the two numbers that you have?

    asked on September 2, 2010
  94. Biology

    A mutation has occurred in one chromosome of a spermatogonium. This mutation will show up in how many of the gametes produced from this cell? Choices: A. None B. Two C. All Four D. Cannot be determined I believe it is 2....If the mutation occurs in the

    asked on May 9, 2010
  95. Chemistry

    Could someone walk me through this problem? 6CO2 + 6H2O --> C6H12O6 + 6O2 partial pressure of CO2 is .26Torr, temp is 25 celsius, calculate volume of air to prouduce 10g glucose I keep getting confused with stoichiometry....my thinking: convert 10 g

    asked on April 24, 2010
  96. Chemistry

    X(g) + 2 Y(g) + 2 Z(g) -->3 M(g) + 2 N(g) I've already found the orders for the following to be: X is 2nd, Y is 1st, Z is 0 and overall of course is 3. But I am confused about the below question. I initially guess that No it doens't occur in one step..but

    asked on April 1, 2010
  97. Chemistry

    The hydrolysis of sucrose (C12H22O11) produces fructose and glucose (each C6H12O6). Two mechanisms are proposed: I) Step 1: C12H22O11 --> C6H12O6 + C6H10O5 (slow) Step 2: C6H10O5 + H2O--> C6H12O6 (fast) II) C12H22O11 + H2O--> C6H12O6 + C6H12O6 Would these

    asked on April 1, 2010
  98. Chemistry

    2A-->B+C given that the initial concentration of A is .022M and that at 69 s, the concentration of B increases to .0095M, what is the rate constant? i know I need to find the new concentration of A at 69s, but I am having trouble with findthing this. I

    asked on March 31, 2010
  99. Chemistry

    The half-life for the second-order reaction of a substance A is 55.8 s when concentration of initial A = 0.69 M. Calculate the time needed for the concentration of A to decrease to the following values. (a) 1/8 of its original value (b) 1/9 of its original

    asked on March 31, 2010
  100. Chemistry

    I need to find the rate constant. I know that it takes 2A to make B, but I am mixed up on how to figure out how to find the concentration of A at 69s

    asked on March 31, 2010

Pages

  1. 1
  2. 2