dina

Most popular questions and responses by dina
  1. geometry

    an angle is equal to one-third its complement what is the angle?

    asked on January 25, 2011
  2. math

    Gabriela has dinner at a cafe and the cost of her meal is $45.00Because of the service, she wants to leave a 15% percent tip. What is her total bill including tip?

    asked on February 22, 2018
  3. Chemmmm =(

    Which ion in each of the following pairs would you expect to be more strongly hydrated? (a) Na+ or Mg2+ Why? thanks!!

    asked on November 30, 2008
  4. Chemistry

    Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g) When 0.114 g of Zn(s) is combined with enough HCl to make 51.1 mL of solution in a coffee-cup calorimeter, all of the zinc reacts,

    asked on April 2, 2010
  5. chemistry

    was hoping someone can help me check if these answers make sense for a silver copper alloy lab. 3. Why don’t you have to weigh the sodium chloride on a sensitive balance? This one I am not sure about, It is because an excess of NaCl is needed to make

    asked on November 12, 2009
  6. Chemistry

    I have .8ml of 35% by weight hydrogen peroxide. The hydrogen peroxide density is 1.14 g/ml. how many moles of hydrogen peroxide are there?

    asked on February 8, 2014
  7. Chemistry1

    The questions asks to write a word equation and a balanced chemical equation for a reaction between aqueous copper (ii) sulfate and solid iron. Assume that iron forms the Fe2+ ion.) Include proper states of matter after each substance (s, l, g, aq). Here

    asked on February 22, 2016
  8. Chemistry pH

    What is the pH of 4.7 M CH3NH3Cl. mehyl-amine, CH3NH2, Kb = 4.4 × 10-4. Do I find Ka first then take the -log(Ka) to find the pH of 4.7M CH3NH3Cl? or do I need to make I.C.E. table?

    asked on April 22, 2014
  9. PHYSICS?

    1300 kg car rounds a banked curve of radius= 50m. If car traveling at 75 km/h and the coefficient of static friction between the tire and road is 0.45 ... 1.) what is the minimum angle of the bank needed to keep the car in the turn? 2.) If the car changes

    asked on March 21, 2016
  10. physics 1

    Problem 1) I don't understand how they got the answers for A) and B) : Ima Rushin can travel from Milwaukee Avenue to the school entrance gate at a constant speed of 22.5 m/s when the lights are green and there is no traffic. On Wednesday, Ima is stopped

    asked on December 20, 2015
  11. CHEM

    SAPPHIRE AND DIAMOND RING ,STAMPED 14K S&S WHAT DOES THIS MEAN?

    asked on September 24, 2011
  12. physics

    A tortoise and a hare are having a 1000-meter race. The tortoise runs the race at a constant speed of 2.30 cm/s. The hare moves at an average speed of 1.50 m/s for 10.0 minutes and then decides to take a nap. After waking up from the nap, the hare

    asked on December 21, 2015
  13. physical science

    A car travels through a school zone at a speed of 36 m/s was the 45 mi/h speed limit exceeded? yes or no

    asked on January 9, 2014
  14. chemistry

    how can i compare the dual nature of light how can i describe the phenomena that can be explained only by the particle model of light. how can i empoly the quantum theory to assess the amount of energy that matter gains and loses how did Einstein utilize

    asked on November 6, 2008
  15. geography

    a delta is a: a.wid river mouth where tides are experienced b.long narrow arm of the sea resulting from the submergence of a glaciated valley c.fan-shaped piece of land at the mouth of a river,resulting from deposition by the river d.funnel-shaped drowned

    asked on February 22, 2010
  16. Economic

    A Giffin good is not correctly described by which of the following? A)A Giffin good must be an inferior good. B)A Giffin good must be such that the income effect and the substitution effect move in opposite directions, and the income effect outweighs the

    asked on April 11, 2010
  17. math

    suppose walmart stock is selling at $59 a share and mattel stock is selling at $28 a share. Amy waller has a maximum of $6000 to invest. she wishes to purchase four times as many shares of walmart as of mattel. only whole shares of stock can be purchase.

    asked on October 12, 2011
  18. k12

    which of the following assessments types has the greatest effect on your overall

    asked on August 18, 2015
  19. Algebra

    You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story

    asked on January 15, 2015
  20. physic

    A pig slides down a 29° incline in twice the time it would take to slide down a frictionless 29° incline. What is the coefficient of kinetic friction between the pig and the incline?

    asked on October 26, 2014
  21. physics

    What is the change in kinetic energy of a baseball as it accelerates from rest to 45.0 m/s? The mass of a baseball is 145 grams. answer in joules

    asked on March 7, 2011
  22. Chemistry

    How many grams of ice at -14.0 degree Centigrade can be completely converted to liquid at 13.7 degree Centigrade if the available heat for this process is 5.91×10^3 kJ? For ice, use a specific heat of 2.01J/(g.degree Centigrade}) and H2 = 6.01 kJ/mol.

    asked on April 3, 2010
  23. english- please help me edit

    Hi I was wondering if anyone can help me edit/proofread my english essay =)

    asked on May 1, 2008
  24. math

    suppose walmart stok is selling at 59 dollars a share and mattel stock is selling at 28 a share. amy waller has a maximum of 6000 dollars to invest. she wishes to purchase four times as many shares of walmart as of mattel. only whole shares of stock can be

    asked on October 14, 2011
  25. physic

    As discussed in Example 4-7, the archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth. Suppose the archerfish squirts water with a speed of 1.4 m/s at an angle of 50.0° above

    asked on September 28, 2014
  26. Probability

    Consider a deck of 52 cards with the following characteristics: 13 red cards, numbered 1 through 13 13 blue cards, numbered 1 through 13 13 green cards, numbered 1 through 13 13 black cards, numbered 1 through 13 1. Describe the steps necessary to

    asked on October 13, 2012
  27. 9th grade

    Simplify the expression. 3 [ (15 - 3)^2 / 4] a. 36 b. 108 c. 18 d. 9

    asked on September 20, 2010
  28. Chem again sorry

    A solution of sodium chloride in water has a vapor pressure of 18.3 torr at 25°C. What is the mole fraction of NaCl in this solution? __________ What would be the vapor pressure of this solution at 45°C? The vapor pressure of pure water is 23.8 torr at

    asked on November 30, 2008
  29. Chemistry

    3. suppose a gas at STP. Calculate its pressure at 25 degrees celcius if volume remains unchanged 5. suppose 1.11 L of an unknown gas in a rigid container constant volume is cooled from 22 deg. C to -55 deg C. Calculate the new pressure of the gas 6.)

    asked on March 2, 2016
  30. business

    A person with type A behavior: is always in a hurry. gets a heart attack at an early age. is impatient and angry. wants success at any price

    asked on October 22, 2010
  31. chemistry; Lab questions help=)

    was hoping someone can help me check if these answers make sense for a silver copper alloy lab. 3. Why don’t you have to weigh the sodium chloride on a sensitive balance? This one I am not sure about, It is because an excess of NaCl is needed to make

    asked on November 12, 2009
  32. chemistry

    Hello, I am having problem with two lab questions and was wondering if someone can help! 1. Calculate the percentage of the empty space in a face-centered cubic lattice, and show that it does not depend on the edge length of the unit cell ot on the size of

    asked on February 3, 2010
  33. Calc

    As I solve this problem, it is undefined. Can you explain how you get 3 or 0. One of this is the answer but I'm not sure. lim as y approaches 0 6x^2 (cot y) (csc2y): A. 3 B. 0

    asked on August 30, 2018
  34. Chemistry

    What mass of water is needed to completely react a 8.1 g packet of magnesium

    asked on November 9, 2016
  35. Physics

    This is another question I had too and didn't understand as well. Vector Addition: Use the head to tail method to determine the resultant vector of the following velocity vectors. V1= 540m/s @66 degrees V2= 12m/s @182 degrees V3= 96m/s @312 degrees V4=

    asked on February 2, 2016
  36. Math

    A herd of 100 deer is introduced onto a small island. At first the herd increases rapidly, but eventually food resources dwindle and the population declines. Suppose the number of deer, N(t), after t years is described by the polynomial function: N(t)+

    asked on October 16, 2015
  37. math

    The amount of paint an electric paint sprayer applies varies directly with time. A sprayer is set to apply 0.5 gallon in 2.5 minutes. Write an equation that gives the amount P of paint as a function of the time T. How much paint is applied if the sprayer

    asked on September 23, 2014
  38. science please no websites

    could you please give me an example of the following(types of friction) : -static -sliding And also: -friction -buoyant force -air resistance Thank You!

    asked on March 31, 2010
  39. french

    Can someone help me correct these phrases? Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the school where....'

    asked on January 27, 2010
  40. chemistry

    Can anyone help me with these Chemistry questions? I am trying to study for an upcoming test and its just not sinking in as well and I thought. This is Thermochem for a heads up: Suppose 33mL of 1.20M HCl is added to 42mL of a solution containing excess

    asked on December 3, 2009
  41. french - final draft

    Well.. i posted this before and I re-edited a few things. I need suggestions and editing please :)

    asked on May 26, 2008
  42. math

    Ali is planning to keep fit through practicing push-ups for 21 days. on the first day, he can only do 14 push-ups in a minute. He plans to do x more push-ups in a minute on the next day. How many push-ups can he do in a minute on 11th days? (in term of x)

    asked on February 3, 2017
  43. social studies

    Treasury inflation protection bonds pay: fixed interest plus an adjustment for inflation. a return that exceeds twice the inflation rate. fixed interest that exceeds the rate of inflation. a rate that combines the unemployment and inflation indices.

    asked on October 28, 2010
  44. social studies

    Groupthink is likely to occur when: anger within the group has been growing. the need arises for a group opinion. almost no conflict is expressed within the group. the group is composed of an even number of people.

    asked on October 22, 2010
  45. Economic

    The market for Good X can be depicted with the following demand and supply equations: Demand: P = 50 – 1/2Q Supply: P = 1/3Q Where P is price per unit and Q represents quantity in units. Policy makers plan on imposing a $1 per unit tax on this good.

    asked on April 11, 2010
  46. Economics

    Multiple choice 1. If the friend offers to pay you $1 five years from today, the net present value will: A)be higher than $1. B)depend upon the interest rate offered. C)be equal to zero since you don't have the dollar. D)not be important in understanding

    asked on April 11, 2010
  47. science please help

    could you please give me an example of the following(types of friction) : -static -sliding And also: -friction -buoyant force -air resistance Thank You!

    asked on March 31, 2010
  48. french

    Can someone help me correct these phrases? Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the school where....'

    asked on January 27, 2010
  49. English

    how did using a formal writing process (planning, drafting, developing, revising, editing, and proofreading)help you creat more effective academic paper? This question sounds as if your teaching is asking YOU about how the writing process helped YOU write

    asked on June 20, 2006
  50. Gov.

    A. Should Congress be able to regulate private business activity? For example, should they be able to set rules or laws that doesn't allow a small business owner from refusing someone service based on their religion, race, nationality, age or something

    asked on November 8, 2016
  51. Government

    Labor group: Student labor union (I am in the labor group!) Employer group: Administration of school _____________________________________ Directions: negotiate the student/admin contract (Some of these points from a realistic standpoint I wouldn't agree

    asked on October 28, 2016
  52. Math

    You are given the following equation SIX + SIX + SIX + SIX + SIX + SIX = TRI where each letter stands for a digit. The value of SIX is ......

    asked on September 26, 2016
  53. American Gov.

    I'm having trouble finding the answers to these questions (the answers should be in order from the article, it's just not clarifiable. Also, I put ****** .... ***** to show where the answers may be that I think is right, but I'm not sure)... 2. How does

    asked on September 17, 2016
  54. management

    which one of the following philosophies makes every employee a quality inspector for his or her own work

    asked on September 19, 2015
  55. Chemistry

    how do you make 50ml of .1 molar solution of benzylamine in acetonitrile

    asked on February 9, 2015
  56. Algebra Help

    You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story

    asked on January 15, 2015
  57. Chemistry pH

    What is the pH of a solution that contains 0.30 M HC2H3O2 and 0.95 M C2H3O2-? Use Ka = 1.8 × 10-5 for HC2H3O2.

    asked on April 22, 2014
  58. chemistry

    What is the definition of an equivalent? a lab procedure requires 1.25 equivalents of zinc powder. How do I determine how much zinc that is?

    asked on February 12, 2014
  59. social studies

    In an attempt to make a sound vocational choice, Jared studies the Occupational Outlook Handbook. He is practicing the strategy referred to as: seeking professional help. finding occupational facts. getting firsthand experience. matching your career to

    asked on October 25, 2010
  60. Physical science

    A chair lift holding a 100 kg man rises 5 meters in height in 10 second time period. Ignore the weight of the chair and related machinery and answer the following: How much power is required, in Watts?

    asked on October 23, 2010
  61. science

    when did the first carbon data take place

    asked on October 20, 2008
  62. chemistry help!

    Hello, I am having problem with two lab questions and was wondering if someone can help! 1. Calculate the percentage of the empty space in a face-centered cubic lattice, and show that it does not depend on the edge length of the unit cell ot on the size of

    asked on February 4, 2010
  63. Abstract Algebra

    If 2^n>n^2 and n>5, then 2^n+1>(n+1)^2 Proof: Assuming that 2^n>n^2 then I can say that 2*2^2>2*n^2 = 2^n+1>2n^2 If I can show that 2n^2>(n+1)^2 then I will be done by transitivity. So 2n^2>(n+1)^2? then 2n^2>n^2+2n+1? then n^2>2n+1, hence n^2-2n-1>0, and

    asked on September 21, 2007
  64. service management

    If another mechanic is hired, fill up the table below and answer the following questions (1pt): a. Which configuration has the lowest Ls? b. Which configuration has the lowest Ws? c. Which configuration has the lowest Wq? d. Which configuration has the

    asked on December 6, 2017
  65. Chemistry 101

    Which calorimeter do you use for determining the specific heat of the metal, the thermos or the Styrofoam cup?

    asked on November 4, 2016
  66. Physics

    Vector Addition: I know you can't physically do drawings on this site. Is there a way of someone explaining how to begin with this problem. Can I chose any scale. The directions said to use the head to tail method to determine the resultant vector of the

    asked on February 2, 2016
  67. physics

    You and a friend stand on a snow-covered roof. You both throw snowballs from an elevation of 18 m with the same initial speed of 11 m/s, but in different directions. You through your snowball downward, at 40° below the horizontal; your friend throws her

    asked on September 28, 2014
  68. Precal

    Given f(x) and g(x) below, find: (a) f + g (b) f – g (c) f*g (d) f/g Please show all of your work. f(x) = x + 5 g(x) = 5x^2+15x-3

    asked on January 4, 2012
  69. social studies

    To develop your self-confidence: learn to rely mostly on intuition. develop a base of knowledge for problem solving. use enough negative self-talk to appear humble. downplay acquiring a lot of facts.

    asked on October 27, 2010
  70. social studies

    A likely question (or request for information) that you'd probably hear during a behavioral interview would be: "Describe your worst behavioral traits." "Describe your best behavioral traits." "Explain to me how you handled a customer emergency." "What

    asked on October 26, 2010
  71. social studies

    Which of the following is the best example of a cultural norm? The average height of adults How much respect is given to older people The average year-round temperature The age of the civilization

    asked on October 23, 2010
  72. social studies

    Finding out what your boss expects of you relates to the theory of: leadership. goal setting. human relations. defense mechanisms.

    asked on October 23, 2010
  73. algebra

    factor completely 25c^2-81

    asked on June 6, 2010
  74. science

    how can two observers measure a different speed for the same moving object

    asked on March 28, 2010
  75. french

    Can someone help me correct these phrases? Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the school where....'

    asked on January 27, 2010
  76. french

    Can someone help me correct these phrases? Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the school where....'

    asked on January 27, 2010
  77. french

    Can someone help me correct these phrases? Avant que j'ai choisi qu'école a laquelle... I wanted to say 'Before I chose the school where....'

    asked on January 27, 2010
  78. elementary aed 201

    Identify internal and/or external rewards that impact recruitment and retention of quality teachers. How do such rewards influence recruitment or retention? How might these rewards shift as new accountability-centered teacher reforms are proposed (such as

    asked on June 30, 2009
  79. math

    (sec(of theta)+1)(sec(of theta)-1)=tan^2(of theta)

    asked on April 10, 2008
  80. Math

    Figure (N) 1 2 3 Number of Coin (C) 4 7 10 Find Formula

    asked on September 11, 2016
  81. PHYSICSHELP

    For the Atwood's Machine so the mass on the right side is 5 kg box which is 3m from the *table (represents the straight line)* The left side of the pulley is 2kg box which is at the table. 1.) How do you know or what do you know about the force of tension

    asked on February 18, 2016
  82. English

    I'm having trouble putting together a thesis and topic sentences. There is so much great information with my sources, everything seems to sound the same. This is a layout of how my topics could be arranged and organized . I don't know how to do a good

    asked on January 31, 2016
  83. World History

    This is only part of the whole passage. What is the best way to simplify the horrific event because all this info is great to to include in my Summary but I don't want to include it all. ______________________________________ In the Republic of

    asked on November 19, 2015
  84. probability

    when it rains, there is a 20% chance that Jamie will go to the gym. When it does not rain, there is a 60% chance that Jamie will go to the gym. there is a 40% chance that it will rain tomorrow. a. what is the probability that Jamie will go to the gym b. if

    asked on November 1, 2015
  85. math

    when it rains, there is a 20% chance that Jamie will go to the gym. When it does not rain, there is a 60% chance that Jamie will go to the gym. there is a 40% chance that it will rain tomorrow. a. what is the probability that Jamie will go to the gym b. if

    asked on November 1, 2015
  86. algebra

    evaluate x^0 when x = negative 3

    asked on September 28, 2015
  87. ALGEBRA 2 (LOGARITHMIC FUNCTIONS)

    These are some I chose to practice but I have a hard time knowing how to do it. The answers are online but that doesn't help. These deal with logarithmic functions etc. PLEASE HELP! THANKYOU 1.)solve the equation: 3^(x+1)=27^(x+3) 2.) e^x=5 3.) 2^(3x)+9=25

    asked on April 15, 2015
  88. Algebra

    What is the product of 9/x-1*7/x-3

    asked on July 21, 2014
  89. algebra

    How do I solve this problem? 3x-2/3x=4/3

    asked on April 6, 2013
  90. science

    how does the thinning of the ozone layer protect your health?

    asked on January 30, 2012
  91. trig

    To the nearest degree, determine the measure of

    asked on November 8, 2011
  92. Math

    A wooden block that is a rectangular prism is 12 inches long. Melinda cuts the wooden block along its length into 4 cubes. How long is each side of the cube?

    asked on November 4, 2011
  93. social studies

    As a result of reengineering, work processes are: radically redesigned and simplified. turned over to outside companies. made much more complex. controlled by computer programs.

    asked on October 27, 2010
  94. social studies

    In the hostile environment form of sexual harassment, the harassed person: does not get a fair hearing for the complaint. suffers from a job loss for having filed a complaint. suffers from a job loss for refusing to grant sexual favors. may not necessarily

    asked on October 22, 2010
  95. Science Please I NEED Help!!!!!!!!!!!!!!!!!!!!!!!!

    Describe how the instantaneous speed of a car changes when the car is moving with constant speed , speeding up, and slowing down please answer as soon as possible

    asked on March 28, 2010
  96. Science please i need help!!!!!!!!!!

    how can two observers measure a different speed for the same moving object

    asked on March 28, 2010
  97. geography

    natural banks which are sometimes built up by a river along the edges of its channel are called: a.river bluffs b.river cliffs c.levees d.slip-off slopes

    asked on February 22, 2010
  98. geography

    which of the following group of rocks can be easily dissolved in water? a,sandstone,granite and obsidian b.limestone,granite and basalt c.quartz,schitz and chalk d.limestone,chalk and sandstone

    asked on February 22, 2010
  99. french- please help

    ugh please help me, im having such a huge stress over this! Le premier arrondissement de Paris est le plus petit et assez historique. Il a été créé le 24 mars 1852. Le population du premier arrondissement était approximativement de quatre-vingt dix

    asked on May 11, 2008
  1. English1A- Critical Thinking and Writing

    cong nghe 4.0

    posted on October 7, 2018