# Kat

Popular questions and responses by Kat
1. ## Science - Please Look!

The senses are used to make which of the following? inferences predictions evaluations ((**observations**)) You walk into the kitchen and see a broken egg on the floor. Which of the following is an inference you can make based on this observation? ((**The

2. ## Chemistry

Which of the following reactions are spontaneous (favorable)? A] 2Mg(s) + O2(g) -> 2MgO(s) Delta G = -1137 kJ/mol .. B] NH3(g) + HCl(g) -> NH4Cl(s) Delta G = -91.1 kJ/mol ... C] AgCl(s) -> Ag+(aq) + Cl-(aq) Delta G = 55.6 kJ/mol .. D] 2H2(g) + O2(g) ->

3. ## Math

The coordinates A(0, 0), B(0, 3), C(4, 3) and D(4, 0) are graphed and connected together. What 3-dimensional shape will be created when this shape is rotated about the y-axis? Provide an explanation and proof for your answer to receive full credit. My

19. ## biology

Is sugar polar or nonpolar and why? I think it's nonpolar, but I don't really know why... Please help. Thank you.

27. ## Chemistry

The diagram shows an electrochemical cell with a gold strip (left) and aluminum glasses (right). In your response, do the following: • Label the cathode and the anode, including the charge on each. • Show the flow of electrons. • Describe what type

28. ## Driver's Ed

Driver's licenses can not be suspended for more than 365 days. A) True. B) False. In 2002, two out of every three drivers under the age of 21, involved in a single vehicle crash, were killed at night. A) True. B) False.

29. ## physics

an object weighs 10N on earth .what is the objects weight on a planet one tenth the earths mass and one half its radius?

30. ## Chemistry

Kp for the following reaction is 0.16 at 25°C. 2 NOBr(g) (reverse reaction arrow->

31. ## bioloy

Choose ONE animal species. Your goal is to describe the way in which an evolutionary change might occur for a particular characteristic (trait) of a population of that species as a result of natural selection. The characteristic (trait) could be something

32. ## S.S

What was a common theme shared by the maya and the aztec civilizations?

33. ## Social Studies

What do the 15th, 19th, and 26th amendments have in common? A. Voting Rights B. Religious Rights C. African American Rights D. Women's Rights

34. ## Physics

A 100 gram mass of metal at 106°C is placed in 100 grams of cool water at 22°C. The final temperature of the mixture is 25°C. What is the specific heat capacity of the metal?

35. ## Social studies

1. which is the most important effect of the Bessmer Process?

36. ## Chemistry

3. The diagram shows an electrochemical cell with a gold strip (left) and aluminum glasses (right). In your response, do the following: • Label the cathode and the anode, including the charge on each. • Show the flow of electrons. • Describe what

37. ## Algebra

Does the data in the table represent a direct variation or an inverse variation? x 1 3 4 7 y 5 15 20 35 Write an equation to model the data in the table

38. ## English12

In Pope's essay on Man, how does the speaker cast humankind's relationship to both God and His creation?

39. ## Math

Sam is 2 years and his mother is 28 years old. In how many years will Sam's mother be 3 times as old as he will be?

40. ## Astro

A newly discovered planet orbits a distant star with the same mass as the Sun at an average distance of 118 million kilometers. Its orbital eccentricity is 0.5. A.Find the planet's orbital period. B.Find the planet's nearest orbital distance from its star.

41. ## Chemistry

In a titration experiment involving an unknown concentration of HCl and a 0.100M solution of NaOH(aq), it was determined that it took 12.5mL of NaOH to neutralize 20.0mL of the HCl(aq). Write a balanced chemical equation for this reaction and determine the

42. ## Gen Science 2

lightning is actually an enormous display of the concept of? A) chemical heating B) solar energy C) magnetism D) groundind

5ft 3 in. – 2ft 9 in. = ??

44. ## Chemistry

2 Ch(aq) + Em(aq) + Is(s) + T(g) ⇄ Ry(aq) + 3 Ro(s) + 4 X(g) ΔHrxn=35.6 kJ/mol Name three things that you could do to make the equilibrium below run to the left. What direction would the reaction shift if you added water? Please help me!!

45. ## Chemistry

Cyclohexane, C6H12, a hydrocarbon, can isomerize or change into methylcyclopentane, a compound of the same formula (C5H9CH3) but with a different molecular structure. The equilibrium constant is 0.12 at 25°C. If you had originally placed 0.036 mol of

46. ## Chemistry

2 NO(g) + 2 H2(g) --> N2(g) + 2 H2O(g) Reactant Concentration(mol/L) and Rate of Appearance of N2 [NO] [H2] (mol/L·s) 0.420 0.122 0.136 0.210 0.122 0.0339 0.210 0.244 0.0678 0.105 0.488 0.0339 What is the rate constant?

47. ## Trigonometry

Determine the number of triangles ABC possible with the given parts. b=60 a=82 B=100

48. ## osu

a 50.0 ml sample of a 15% (m/v) solution of H2SO4 is added to water to give a final volume of 250.0 ml. What would the final concentration be?

49. ## college physics

a 7500 kilogram rocket blasts off vertically upward from the launch pad with a constant acceleration of 2.25 m/s squared and feels no appreciable air resistance, when it reaches the height of 525 meter its engine suddenly fail so that the only force acting

60. ## civics

Research how your local government works. Briefly explain the process to pass a law (usually called an ordinance or code) in your city or county. To introduce the idea in my city or county, first I would

61. ## Chemistry

25.0 mL of an H3BO3 solution were titrated with 29.15 mL of a 0.205 M LiOH solution to reach the equivalence point. what is the molarity of the H3BO3 solution?

62. ## Chemistry

When it comes to something being spontaneous, what does it mean? I know its something that goes out without no outside force or something like that but what are example of something that is spontaneous ?

63. ## Chemistry

For the reaction: 2NO(g) + H2(g) N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. I wrote: [N2O][H2O] / [NO]2 [H2] This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75

64. ## Science

For the reaction: 2NO(g) + H2(g) N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75 mol/L, the concentration of H2 is 3.00

65. ## Chemisty

For the reaction: 2NO(g) + H2(g) N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75 mol/L, the concentration of H2 is 3.00

66. ## Chemisty

For the reaction: 2NO(g) + H2(g) N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75 mol/L, the concentration of H2 is 3.00

67. ## Math

The diameter of a car's tire is 60cm. While the car is being driven, the tire picks up a nail. At what times in two complete cycles is the nail at a height of 1cm above the ground. So far, I have calculated the circumference of the wheel (188.5) and I do

68. ## science

Specific heat capacity of solid ethanol is 2.419 J/g C. Melting point temperature of ethanol is -114.4 C/ 158.8 K. Enthalpy of fusion of ethanol is 106.4 J/g. Specific heat capacity of liquid ethanol is 2.440 J/g C. 44.0 g of solid ethanol at -134.4 C is

69. ## Managerial Accounting

Doughboy Bakery would like to buy a new machine for putting icing and other toppings on pastries. These are now put on by hand. The machine that the bakery is considering costs $78,000 new. It would last the bakery for ten years but would require a$9,000

70. ## Calculating and Reporting Healthcare Statistics

How do you: Calculate the total inches of documents filed per day for all clerks. Calculate the total documents filed per day for all clerks. Calculate the weekly total inches of documents filed per clerk (round to two decimal points). Calculate the weekly

1. Which phrase, in "The Prisoner Who Wore Glasses," best describes Brille? (1 point) easygoing and generous with his friends intelligent, yet shortsighted in his political views intuitive and calculating in his appraisal of others quick­thinking and

72. ## Algebra

You have been hired by a cell phone company to create two rate plans for customers, one that benefits customers with high usage. The cell phone rates may compare usage of minutes or usage of text messaging. At 500 minutes or 200 text messages, both plans

73. ## physics

a Baseball player throws a ball for the outfield horizontally such that it is released 1.5 meters above the ground. if the ball is to reach second base 20.0 meters away, how fast must the ball be thrown so that is does not bounce before reaching the base

74. ## geometry

Points D, E, and F are the midpoints of sides \overline{BC}, \overline{CA}, and \overline{AB} of \triangle ABC, respectively, and \overline{CZ} is an altitude of the triangle. If \angle BAC = 71^\circ, \angle ABC = 39^\circ, and \angle BCA = 70^\circ, then

75. ## English

What is the subject and the verb of the sentence : A police officer stepped into the street and stopped cars .

76. ## Biology

Hydrolysis uses a catabolic reaction. Explain what a catabolic reaction is and how it is useful in creating monomers from polymers.

77. ## Chemistry

The activation energy of a certain reaction is 34.9kJ/mol . At 23 ∘C , the rate constant is 0.0190s−1. At what temperature in degrees Celsius would this reaction go twice as fast?

78. ## chemistry

By how much will the vapor pressure of water decrease if a solution at 40.0°C is produced by dissolving 16.0212 g of K3PO4 (formula mass = 212.30 g/mol) with 40.8480 g of water. The vapor pressure of pure water at this temperature is 55.30 mmHg. If the

79. ## Computer hardware

What circumstance would be the only reason for one to toil with processor and system bus frequencies? A. Purchasing a multi core processor B. Purchasing a chip with static ram C. Overclocking a processor D. Purchasing an AMD chipset I think it's c, but I

80. ## chemistry

an aspirin contains .324 g of aspirin. how many pounds of aspirin are in a 500 aspirin of bottle

81. ## Math 11

Is it possible to construct a rectangle whose length is 1cm less than twice its width, and whose area is 40cm^2? If your answer is yes, determine the dimensions of the rectangle to the nearest tenth of a centimetre. If your answer is no, explain why it is

82. ## science

A golfer takes two putts to sink his ball in the once he is on the green. The first putt displaces the ball 6.00 m east, and the second putt displaces it 5.40 m south. What displacement would put the ball in the hole in one putt? and how do I show this

83. ## physics

A 10.8 kg block of metal is suspended from a scale and immersed in water, as in the figure below. The dimensions of the block are 12.0 cm 10.4 cm 10.4 cm. The 12.0 cm dimension is vertical, and the top of the block is 5.00 cm below the surface of the

84. ## math

A car rents for $40 per day plus .20 cents per mile. your budget is$92 daily.What mileage will allow you to stay in budget?

85. ## chem

Is there any simple way to predict the volume of a second back titration done on a particular antacid substance after completing a titration the first time around?..Thank you every one for responses.

86. ## Chemistry

2 L(g) + An(aq) + 3 Gw(s) + 2 I(g) 2 Gd(aq) + 3 A(g) + Y(s) What direction would the reaction shift if the volume of the container was increased? left or right? What direction would the direction shift if some additional water was added? left or right? and

87. ## Chemistry

NH4HS(s) reverse reaction arrow NH3(g) + H2S(g) Using Le Chatelier's principle, explain how increasing the temperature would affect the equilibrium.

88. ## Chemistry

The reaction O2 ⇄ 2 O has a K=1.2x10-10. If a 1.7 L container holds 3.8 moles of O atoms (and nothing else), what will the concentration of O be when equilibrium is reached? So far, I have 1.2x10^-10 = 2.2^2 / 0 but I don't know how to do the rest. When

89. ## Chemistry

Use Hess' Law to calculate the heat of the following equation. Show all work including the reactions that you use, in the form that you use them. 2 C + 2 NO2 ---> 2 CO 2 + N 2

90. ## Social Studies Paper

I have to write a paper about my neighborhood (east flat rock NC) using 3 of the 5 themes of geography. The 3 that I used were: Place, Location, and Human-Environment Interaction. I need some help on some ideas I could use for human-environment

91. ## writing process part 2

i need help on writing an eight sentence paragraph. i get a great idea(thought)about what to write and when i do start writing i freak out and go blank.

92. ## french

Hi, if I want to say: I will go to China, Greece, and Egypt. ...would this be correct?: J'irai en Chine, la Grece, et l'Egypte. Or would I just list them? Thanks!

93. ## Physics

At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at rest, slides without friction, and descends through a vertical height of 2.28 m, what is her speed at the bottom of the slide?

94. ## math

whts d answer 4 d pizzazz workseet that says "did u hear about...."

95. ## physics

A beam of negligible mass of length 3 m is suspended by a string attached to a wall such that the angle between beam and string is 30 degree, and the beam is held horizontal with a sky weight. Find the tension in the string? Find the compression force on

96. ## trig

an airplane leaves the airport and flies due west 150 miles and then 240 miles in the direction 200°40'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?

97. ## Geometry-properties of tangents of a circle

Circle L has segment LJ and segment LK as radii. Those 2 segments are perpendicular. Segment KM and segment JM are tangent to circle L. Is triangle JLM congruent to triangle KLM? Please explain.

98. ## chemistry

When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced. CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq) What mass of limestone

99. ## chemistry

When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced. CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq) What mass of limestone