# Katelyn

Popular questions and responses by Katelyn
1. ## Chemistry

What is the maximum mass, in grams, of NH3 that can be produced by the reaction of 1.0 g of N2 and 1.0 g of H2 using the reaction below? N2+H2→NH3 (not balanced) A) 0.60 g B) 5.7 g C) 1.2 g D) 2.9 g

2. ## Algebra

The school photography club charges \$10 for each photo in its annual pet photo contest. The club wants to save \$75 of its earnings for a pizza party. The club members also want to have at least \$50 left over after the pizza party to pay for other club

3. ## Chemistry

Classify the following reactions as precipitation reactions, oxidation-reduction reactions, or acid-base reactions. 1)2NaCl(aq)+K2H2Sb2O7(aq)==Na2H2SbO7(s)+2KCl(aq) 2)(CH3COO)2Cu(aq)+(NH4)2C2O4(aq)==CuC2O4(s)+2CH3COONH4(aq) 3)4Al(s)+3O2(g)==2Al2O3(s)

An object with an initial speed of 4.0 meters per second accelerates uniformly at 2.0 meters per second2 in the direction of its motion for a distance of 5.0 meters. What is the final speed of the object? Vi=4m/s a=2.0m/s*s d=5.0m Vf=? Vf©÷=Vi©÷+2ad

5. ## PHYSICS

A car is traveling 27 m/s when the driver sees a child standing in the road. He takes 0.8 s to react, then steps on the brakes and slows at 8.0 m/s2. How far does the car go before it stops? please help!! Since he's going 27 m/s, and he takes 0.8 s to

6. ## Algebra

during a sale at the local department store, you buy three sweatshirts and two pairs of sweatpants for \$85.50. later you return to the same store and but three more sweatshirts and four more pairs of sweatpants for \$123. what is the sale price of each

7. ## history

What reason was given by the federalists to support the constitution? Is it that the united states needed a strong government to establish economic stability, to maintain control over all its states, to define state boundaries, or in order to pass laws to

8. ## Chemistry

Hi, I'm doing a chem lab of the Percent Composition of Potassium Chlorate-A Gas Law Experiment and we need to calculate the percent of KClO3 in the sample volumetrically and gravimetrically. I need help calculating the Volumetric percent of KClO3 in sample

9. ## math

A \$15,000 debt is to be amortized in 12 equal semiannual payments at 5.5% interest per half-year on the unpaid balance. Construct an amortization table to determine the unpaid balance after two payments have been made. Round values in the table to the

10. ## American History

In a paragraph, analyze how the American Revolution worsened the economic condition for many citizens. Consider the people who raised concerns about economic problems. Include the steps citizens took to address their economic problems. I need help pleassse

11. ## physics

If the rotational speed of a CD changes from 550 rpm to 200 rpm as it plays 30 minutes of music, what is the CD's average rotational acceleration?

12. ## Chemistry

H2O (liquid) yields H2O gas delta H= +44kJ. How much heat is evolved when 9.0 grams of water vapor is condensed to liquid water?

13. ## physics

A 3 kg block (block A) is released from rest at the top of a 20 m long frictionless ramp that is 5 m high. At the same time, an identical block (block B) is released next to the ramp so that it drops straight down the same 5 m. Find the values for each of

14. ## Math

An ice cream shop offers 5 different flavors of ice cream and 9 different toppings. How many choices are possible for a single serving of ice cream with one topping?

15. ## Algebra

Andy and Sylvie each incorrectly simplified the expression -3 - 4(2x - 3). Andy wrote -14x + 21 and Sylvie wrote -8 - 6. Explain their errors and give the correct answer. My answer: What Andy did wrong is adding instead of subtracting and adding the

16. ## Chemistry

3NO2 + H2O = 2HNO3 + NO How many grams of nitrogen dioxide are required to produce 5.89 x 10 to the 3rd power kg HNO3 in excess water?

17. ## Physics

A wheel accelerates from rest to 59 rad/s at a rate of 58 rad/s^2 What is the angular displacement of the wheel??? A) 24 rad B) 38 rad C) 30 rad

18. ## Physics

Two identical boxcars (m = 14866 kg) are traveling along the same track but in opposite directions. Both boxcars have a speed of 5 m/s. If the cars collide and couple together, what will be the final speed of the pair?

19. ## algebra

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that?

20. ## Calculus

Given the equation xy = 2, set up an integral to find the length of path from x = a to x = b and enter the integrand below. I did the integral from b to a and set it equal to the sqrt(1+4/x^4), because I found y to equal 2/x and the derivative to be

21. ## Math help

a \$6000 principal earns 8% interest compounded semi annually after 35 years what is the balance

22. ## Physics

Jane and John, with masses of 50 kg and 60 kg, respectively, stand on a frictionless surfact 10 m apart. John pulls on a rope that connects him to Jane, giving Jane an acceleration of 0.92 m/s^2 toward him. (a) What is John's acceleration? (b) If the

23. ## physics

A 1.3- block of ice is initially at a temperature of -3.5. If 6.6×105 of heat are added to the ice, what is the final temperature of the system? Find the amount of ice, if any, that remains. Suppose the amount of heat added to the ice block is doubled. By

24. ## PHYSICS

A truck is traveling at 16 m/s to the north. The driver of a car, 500 m to the north and traveling south at 25 m/s, puts on the brakes and slows at 3.5 m/s2. Where do they meet? please help!! Let the truck position be X1 and the car position X2, measured

25. ## science

A loaf of bread weighs 1,362 g. The weight in kilograms is Select one: a. 1,362 kg. b. 0.01362 kg. c. 0.1362 kg. d. 1.362 kg. Next

26. ## physics

3 kg block (block A) is released from rest at the top of a 20 m long frictionless ramp that is 5 m high. At the same time, an identical block (block B) is released next to the ramp so that it drops straight down the same 5 m. Find the values for each of

27. ## physics

A 1200 kg car traveling north at 14 m/s is rear ended by a 2000 kg truck traveling at 25 m/s. If the truck and car lock bumpers and stick together, what is their speed immediately after the collision?

28. ## math

Find the area of a parallelogram with base b and height h. b = 82 cm h = 16.6 cm .1,361.2 cm2 .6,724 cm2 .137.78 cm2 .98.6 cm2

29. ## Math

A rectangle is 2.8 meters wide and 3.5 meters long. What is the area?

30. ## Trigonometry

A car wheel has a 13-inch radius. Through what angle does the wheel turn when the car rolls forward 4 ft?

31. ## Economics

Which of the following firms caould raise prices and expect an increase in revenues? A)a firm product has an elasticity of 1 B)a firm whose product has an elasticity of 0.31 C)a firm whose product has an elasticity of 3.1 D)all firms regardless of the

32. ## Math

The measure of (Angle)D is 5 times the measure of (Angle)E. The two angles are supplementary. Find the measure of each angle. My Method: x+x*5=180 I tried this but it didn't work, any correct steps?

Solve using substitution. y = x – 2 x + y = 10 7x + 2y = - 8 8y = 4x Solve using elimination. 2x + 3y = 12 2x – y = 4 5x – 2y = - 19 2x + 3y = 0

34. ## Science

Suppose you buy a new pair of shoes. They come in a box. You take the shoes out of the box to wear them. How do the mass and the volume of the shoe box compare before and after you take the shoes out?

35. ## chemistry

4NH3+7O2 yields 4NO2+6H2O If 8g of NH3 reacted with excess O2, how many g of H2O will be produced?

36. ## Physics

1.Given that 1g of hydrogen combines completely with 8g of oxygen to form water, how much water can you make with 9g of hydrogen and 32g of oxygen?

37. ## physics

A cube of ice, 28 cm on each side, is melted into a measuring cup. What is the volume of the liquid water? ------cm3

38. ## Trigonometry

Two wheels are rotating in such a way that the rotation of the smaller wheel causes the larger wheel to rotate. The radius of the smaller wheel is 4.4 centimeters and the radius of the larger wheel is 20.9 centimeters. Through how many degrees wil the

39. ## Physics

an airplane flies sue west at 185 km/h with respect to the air. there is a wind blowing at 85 km/h to the northeast relative to the ground. what is the planes speed and direction with respect to the ground answers. // our class is literally stuck in this

40. ## Science

If you lift a 15 °C unsaturated air bubble from the surface to 1 km height, what would be its final air temperature?

41. ## Algebra

Multiple Choice What is the simplified form of 3 a superscript 4 baseline b superscript negative 2 baseline c superscript 3 baseline question mark A. Start Fraction 81 a superscript 4 baseline c superscript 3 baseline over b superscript 2 baseline End

42. ## Math

Brandy plans to frame a picture with a sheet of construction paper. Her picture is 8 inches wide and 13 inches long. She wants the frame to extend 1 inch beyond the picture on all sides l. How wide and long should the frame be? What is the perimeter of her

43. ## physics

If the momentum of one object changes in a system that is subject to no net external force, what else must happen? 1) Collisions with other objects will change its momentum back. 2) The momenta of the other objects in that system change in the same way. 3)

44. ## Physics

1. A fisherman's scale stretches 3.6 cm when a 2.5-kg fish hangs from it. What will be the frequency of oscillation if the fish is pulled down 2.7 cm more and released so that it oscillates up and down? 2. Two trains emit 518 Hz whistles. One train is

45. ## Trig

A pulley with a diameter of 24 inches is driven by a belt which is moving 1045 ft/min. How many revolutions per minute are made by the pulley?

46. ## Physics

A 45.0 g ball of copper has a net charge of 2.3 µC. What fraction of the copper's electrons have been removed? (Each copper atom has 29 protons, and copper has an atomic mass of 63.5.)

47. ## Trigonometry

A bicycle with a 26-inch wheel(diameter) travels a distance of 700 feet. How many revolutions does the wheel make?

48. ## Physics

You exert a force of 26 N on the head of a thumbtack. the head of the thumbtack has a radius of 7 mm.? What is the pressure on your thumb? -------- atm

49. ## physics

If a hair dryer is rated at 900 W, how much energy does it require in 5 minutes?

50. ## Science

If you lift a 15 °C air bubble from the surface to 1 km height and the environmental temperature at 1 km is 10 °C, what stability does the atmosphere demonstrate at this level?

51. ## Chemistry

nitrogen reacts with oxygen to form 2 compounds. Compund A contains 2.8 g of nitrogen for each 1.6 g of oxygen. Compound B contains 5.6g of nitrogen for each 9.6g of oxygen. What is the lowest whole number mass ratio of nitrogen that combines with a given

52. ## ela

Underline the appositive in each sentence. Circle the noun it describes. 3.Genes, sections of DNA, govern all of life's processes. 4. Each gene, the structural unit of inheritance, is a segment of a DNA molecule with a specific purpose. Thanks everyone. I

53. ## Chemistry

nitrogen reacts with oxygen to form 2 compounds. Compund A contains 2.8 g of nitrogen for each 1.6 g of oxygen. Compound B contains 5.6g of nitrogen for each 9.6g of oxygen. What is the lowest whole number mass ratio of nitrogen that combines with a given

54. ## statistics

Randomly selected cans of Coke are measured for the amount of cola in ounces. The sample values listed below have a mean of 12.18 ounces and a standard deviation of 0.118 ounces. Use DataDesk to find a 99% confidence interval for the mean volume of Coke in

55. ## math

A pendulum swings through an angle of 14 degrees each second. If the pendulum is 17cm in length and the complete swing from right to left lasts 3 seconds, what area is covered by each complete swing?

56. ## algebra 1

write an algebraic expression for each verbal expression. Then write a real-world situation that could be modeled by the expression. 10 more than y

57. ## Math

Two circles have circumferences of pi and 3 pi. What is the ratio of the area of the circles? The diameters? The radii?

58. ## math

Obesity is defined as a body mass index of 3 kg/m2 or more. A 95% confidence interval for the percentage of U.S. adults aged 29 years and over who were obese was found to be 22.4% to 22.5%. What was the sample size?

59. ## math

two scores and 7 years ago is equivalent to how many years

60. ## statistics

A new medication has been created to treat osteo-arthritis inflammation and pain. Doctors prescribing the drug claim that the drug is not as effective for women as men since women taking the medication have higher pain levels than men. The pharmaceutical

61. ## Statistics

A scientist in Smallville tested the cholesterol of a random sample of 35 town residents. He constructed the following confidence interval: t-interval for μ: with 99.00% Confidence: 188 < μ(Cholesterol) < 206 What is the margin of error? A) 18 B) 9 C)

62. ## Algebra

Amy has some money in her checking account. If she writes a check for \$40.50, her checking account will be overdrawn by \$21.50. Find how much money is Amy’s checking account now. My Answer (please correct if wrong): 40.5 - (-21.50) = x

63. ## physics

What happens to centripetal force when speed decreases, in the special case that the object continues moving in a circle of the same radius? A) The radius cannot stay the same. B) The force also decreases. C) The force increases. D) Speed does not affect

64. ## Pre-Calculus

Find the equation in standard form for the hyperbola that satisfies the given conditions: transverse axis has endpoints (5,3) and (-7, 3) and conjugate axis has a length of 10. I found the distance of the transverse axis to be 12. For the formula, I have

65. ## Math

The measure of (Angle) A is 4 degrees greater than the measure of (Angle) B. The two angles are complementary. Find the measure of each angle. (I tried 41+45 but that didn't work out, anyone got any steps to solve this?)

66. ## Chemistry

The principal quantum number (n): A) specifies the subshell of the orbital. B) specifies the principal shell of the orbital. C) specifies the 3-D shape of the orbital. D) specifies the maximum number of electrons. E) none of the above

67. ## physics

Two identical boxcars (m = 14866 kg) are traveling along the same track but in opposite directions. Both boxcars have a speed of 5 m/s. If the cars collide and couple together, what will be the final speed of the pair?

A truck is traveling at 16 m/s to the north. The driver of a car, 500 m to the north and traveling south at 25 m/s, puts on the brakes and slows at 3.5 m/s2. Where do they meet? The truck has constant velocity of 16m/s. The car is 500m away, has velocity

69. ## statistics

An automobile shop manager times six employees and found that the average time it took then to change a water pump was 18 minutes. The SD of the sample was 3. Find the 99% of the interval of the true mean.

70. ## chemisty

five characteristics of life

71. ## Math

Scores on the GRE​ (Graduate Record​ Examination) are normally distributed with a mean of 554 and a standard deviation of 120. Use the 68-95-99.7 Rule to find the percentage of people taking the test who score between 434 and 674

72. ## physics

A solid ball with a volume of 0.1 m3 is made of a material with a density of 2800 kg/m3. What is the mass of the ball? -----kg

73. ## physics

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3? -----°C

74. ## Chemistry

What is the maximum mass, in grams, of NH3 that can be produced by the reaction of 1.0 g of N2 and 1.0 g of H2 using the reaction below? N2+H2→NH3 (not balanced) What is the maximum mass, in grams, of that can be produced by the reaction of 1.0 g of and

75. ## Statistics

A state survey investigates whether the proportion of 8% for employees who commute by car to work is higher than it was five years ago. A test on employee commuting by car was done on a random sample size of 1000 and found 100 commuters by car. Test an

76. ## Physics

Hillary kicks a ball so that it is in the air for 3.2 s. The ball lands down field 56 m from its starting point. a. Determine the x and y velocities of the ball.

77. ## Chemistry

The given actual molarity of sulfuric acid was .08M. How do I calculate the absolute error and percentage error? Your question isn't complete? Did you experimentally measure the molarity? Or was it somthing else? If you measure the value experimentally,

78. ## physics

What is the acceleration due to gravity at a distance of one Earth radius above the Earth's surface

79. ## Biology

You have a population where the percentage of homozygous dominant individuals is 27%. Use the equation to fill this table.

80. ## Statistics

Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls

81. ## Statistics

A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 5%. the type of alternative hypothesis is: left-tailed right-tailed or two-tailed Is this right-tailed?

82. ## Statistics

Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls

83. ## US Hist

How did the Seven Years' War lead to the American Revolutionary War?

84. ## physics

A hunter aims horizontally at a target 120 m away. If the bullet travels the gun at a speed of 250 m/s, by how much will it miss the target?

85. ## Anology

4 letter word starting with scr spr or str - brother is to mother as fly is to - - - - Well, scry, stry, and spry are all words, but I guess spry works the best.??? I can't find scry or stry in my dictionary. I don't see the analogy between spry and fly.

86. ## social studies

What language is used to describe the roll of the Senate in Supreme Court Nominations? Although the role of the Senate can probably be described using other languages, it is given in English. Here are some possible web sites:

87. ## physics

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3? ______ °C

88. ## Trigonometry

A pendulum of length 17.6 inches swing 1 degree and 5 minutes to each side of its vertical posisition. To the nearest hundreth of an inch, what is the length of the arc through which the end of the pendulum swings?

89. ## Algebra

simplify 9to 6th power times 3 to the 7th power all over 9 to the 8th power times 3 to the 6th power

90. ## English

what would be a good thesis statement on why do people dream?

91. ## Math

Scores on the GRE are normally distributed with a mean of 541 and a standard deviation of 89. Use the 68-95-99.7 rule to find the percentage of people who score between 363 and 541

92. ## physics

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3? _____°C

93. ## Statistics

Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adult women by IBR

94. ## geometry

what is the circumference of the circle to the nearest tenth d=1/2

95. ## English

In paragraph 3 of Swimming Strokes by Lee Carroll, I found 3 errors in subject-verb agreement and 3 errors in parallelism. Are these answers correct because all the errors in the passage range from 0 errors to 3 errors and nothing higher than 3 errors in

96. ## physics

You have a friend who is an archer and she wants to know how fast the arrows leave her bow. You have her launch an arrow horizontally, 1.5 m above the ground, and find that the arrow lands 33 m away. What is the initial velocity of the arrow as it leaves

97. ## Physics

Three liters of nitrogen combine with 9 L of hydrogen to form 6 L of ammonia. If the molecules of nitrogen and hydrogen have two atoms each, how many atoms of hydrogen and nitrogen are there in one molecule of ammonia? ____ atoms of hydrogen ____ atoms of

98. ## Coop

Pharmacy technician: 1) Required skills: a) job specific skills b) Transferable skills 2) Male to female Ratio

99. ## Co-op

I have been given a cooperative education placement and career research assignment... Basically I have to do research of my career by giving its information, where I work research, What I do research, What I learned research, Related course connection