1. Physics

    Physics lab need help with sources of error. In our lab, we had to use carbon tape and a spark timer to find out the maximum velocity and maximum acceleration of a high school student. I'm having a hard time to find sources of errors. Any ideas or insights
  2. Biology Lab gr 12

    hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab with sand,
  3. Sources of error for lab

    Hey! So I need help coming up with a source error for this lab I did. We rolled a car down a wooden board and timed the cart rolling down at different distances on the board. So far I have errors dealing with friction, the stopwatches, and the wooden board
  4. Repost bio

    hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab with sand,
  5. PLEASE RESPOND!!

    Question: hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab
  6. Labs: Biology 12

    Question: hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab
  7. chemistry

    Is there a difference between sources of experimental error and sources of error? yes experimental error is when you did something wrong not on purpose though. like stopping the time clock too early or too late but not going back to fix it. sources of
  8. Chemistry

    I did a lab in chemistry about weighing table salt and sand and mixing it with water and pouring it through a funnel. One of my lab quetions was, What are some possible sources of error in this activity? First of all, I don't know what this question means.
  9. Repost Repost Bio

    I asked this, and didn't get a very helpful response. Question: hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed
  10. Chemistry 12

    what are the sources of error in preparing ester lab?
  11. Chemistry lab

    Discuss three unavoidable sources of error in Part 1 (the synthesis of the crystals) of this experiment and identify the major factors that would explain a less- than-100% yield. Note: human error is not an acceptable answer. Was the alum not dry enough
  12. chemistry

    I am completing a lab where I had to determine the mass percent of Mg(OH)2 in an antacid tablet , and I am trying to determine sources of error for my lab. I was wondering if when I back-titrated with NaOH after I overshot on purpose would the added OH-
  13. chemistry

    what are the possible sources of error that might lead to an erroneous determination of the concentration of the acetic acid in the titration lab?
  14. Chemistry

    You are required to plan and design an investigation to test the following hypothesis Black inks from three different brands of permanent makers contains different dyes. I want to know how to go about doing this lab What Aim must be use? What is the
  15. Chemistry

    You are a lab technician and mix with water in order to create 250 ml of a 17% salt-solution. Discuss and explain the sources of error that may be occurring in creating the mixtures.
  16. Physics HS

    Doing a physics lab on elastic material - Asked to list at least three sources of error in measurments and/or laboratory technique. I really do not understand what teacher is looking for?
  17. Chemistry

    What would be the sources of error for the lab of physical properties of two types of solids. Solids used:sodium chloride and camphor With: water and 6 ml isopropyl alcohol.
  18. Lab in general

    I just read my syllabus for lab and I am kind of shocked at what it says. I do know that I have to write out procedures of the lab in my nbk before coming to lab but I just read that it says "You will NOT be allowed to refer to you textbook/handout during
  19. biology

    I have to do a lab report on the effect of metal ions on enzyme activity One of the questions asked the sources of error and one asked the methods used I got stuck, can you pls help
  20. Physics Lab

    Hey there, I did a lab in which a wooden board was taken and then a dynamics cart was dropped down it. Four markings of different incriments were marked on the board, so that when we dropped it, we could record the time it took for the cart to reach a
  21. Chemistry

    I did a lab today in class and part of the lab is to experimentally find the enthalpy for the dissolution of ammonium chloride by dissolving 4.0 g of NH4Cl(s) in 50.0 mL of H2O(l). I got a -5°C temperature change and calculated delta H to be 15 kJ/mol.
  22. Physics

    what can be the source of error in lab of forces equilibrium,force board lab?
  23. Physics

    what can be the source of error in lab of forces equilibrium,force board lab?
  24. Physics 11

    In physics we did a lab experiment that involved finding the Heat capacity. the teacher told us that we wont get an exact answer. He wanted us to state the Source of Error. what is a source of Error? He said that it isn't a "human stupidity error" eg.
  25. LAB HELP ASAP

    WHAT ARE POSSIBLE SOURCES OF ERRORS IN A COMBUSTING BIODIESEL LAB WHERE WE USED CANOLA OIL TO CREATE A SAMPLE OF BIODIESEL.
  26. Chem

    In a lab where a thermometer is used to measure temperature for a hot liquid it is possible as and error that the thermometer will cause the temperature of the liquid to cool slightly causing a observation error but how can this be fixed to minimize error?
  27. Chemistry Help Please!!!

    What is the greatest source of error for the hydrolysis of salts and pH of buffer solutions lab?How would you minimize this source of error?
  28. chem

    experimental error is part of any experiment.suggest two possible sources of error on the experiment of the mole ratio of NaCL to that of NaHCO3.
  29. Finding and evaluating sources

    1.When should you begin choosing appropriate sources for your topic? as soon as you get the assignment after the rough draft is due as soon as you have a good working thesis statement after you decide how long your essay will be Question 2 What qualities
  30. Chemistry

    You are a lab technician and must create 250 ml of a 17% salt solution. You have available three stock solutions. You have a one liter container of a 5% salt, a 500 ml container of a 28% salt solution, and a 400 ml container of a 40% salt solution. Discuss
  31. Chem

    The actual heat of formation of MgO is -601.8 kJ/mol. Convert this to kcal/mol and calculate your % error. And list two possible sources of procedural error to account for this percentage.
  32. Chemistry 12

    Hey yall! i am working on a lab where we used NaOH solid (pellets) and 1.0M of NaOH solution. i was wondering is Sodium Hydroxide a substance that reacts with the enviroment? because maybe that could be like a source of error right? so basically i am
  33. physics lab

    For a physics lab, I measured length, width, thickness, and mass of 2 blocks of wood, 3 trials each. There were 2 questions on the lab that I did not understand how to do. 1. For each trial, find the ratio between the mass and the volume. Based on your
  34. Statistics

    Blood samples from 10 persons were sent to each of two labs for cholesterol determination. The measurements are recorded below: Table 1. Serum Cholesterol measurements of Lab 1 and Lab 2 Subject Lab 1 Lab 2 1 296 318 2 268 287 3 244 260 4 272 279 5 240 245
  35. physics

    I need help coming up a source of error for this like lab thing that we are doing class. So like we took this string with a rubber ball on it and the string went through a glass tube, and on the end of the string, so the like opposite end of where the ball
  36. AP Chem

    i always get the error analysis section of my lab wrong so i need a NON human error in an experiment involving the diffusion of gases Experiment: stick cotton ends of a Q-tip (one soaked in HCl and one in NH3) into either end of a drinking straw and
  37. lab....

    when doing a lab you need an anayliss, but what is it and how do I make it like what do I need to put into my analysis? In the "analysis" part of a scientific experiment, you take the data you have collected and use it to answer whatever question or
  38. Physics/Statistics

    We're actually learning propigation of error in my chem class, but it seems to be used equally as much in Physics/Stats. My teacher showed us two methods of doing it: REAL Method (Addition/Subtraction): square root[(error absolute 1)^2 + (error absolute
  39. Physics

    A particle is moving at 0.75c relative to a lab on Earth. By what percentage is the Newtonian expression for its momentum in error, i.e., how wrong is the classical formula? (The percentage error is the difference between the erroneous and correct values,
  40. statistics

    Hi, Could anyone help me please, because I'm not sure with my answer, Thank you so much for your help and value time. Blood samples from 10 persons were sent to each of two labs for cholesterol determination. The measurements are recorded below: Table 1.
  41. Statistics

    Hi, Could anyone help me please, because I'm not sure with my answer, Thank you so much for your help and value time. Blood samples from 10 persons were sent to each of two labs for cholesterol determination. The measurements are recorded below: Table 1.
  42. Lab Physic

    If T=2π√L/8 Then given that L=100.0±0.1cm(limit standard errors) and T=2.01±0.01s(limit standard error) Calculate the value of g and its standard error. Pls I need answer to that
  43. Chemistry

    How do you find Absolute error and how do you find relative error? Absolute error is the difference between the experimental value and the actual value. Relative error, usually expressed as a percent, is the error relative to the correct value. For
  44. grammar

    Matching. Each of the following sentences has an agreement error in it. Match the correct type of agreement error to the sentence. *The patient was placed in the wheelchair with the fractured tibia. A. Verb tense agreement error B. Subject/verb agreement
  45. Physics, error derivation

    I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive
  46. physics, error calculation repost

    I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive
  47. Biology

    I really need help with my science lab. I was sick when we did the lab on Thursday and Friday was a snowday so I did not get to get the observations off my peers. My teacher has allowed people one more day and I do not understand this Lab at all. If
  48. GRAMMAR

    Good Morning- Each of the following sentences has an agreement error in it. Match the correct type of agreement error to the sentence. a. Verb tense agreement error b. Subject/verb agreement error c. Pronoun agreement error d. Modifier placement error e.
  49. CHM Lab

    Calibration of a 50 ml buret (10 ml,15 ml,20ml, 25 ml,30ml,35ml,40ml,45ml,50ml)(repeated the procedure 3 times) for experimental ; i have observed vol(ml) , temp.C ,for true i have mass(g), true vol. ml and for calibration i found error ml /correction
  50. Chemistry

    The question is: What is the molarity of the copper (II) chloride solution your teacher provided? Show calculations. Obtain the true molarity of the copper (II) chloride solution and calculate percent error. I have done this so far trying to answer the
  51. 10th grade

    When using a calorimeter with two chambers what are the possible sources of error?
  52. Chemistry

    An Ap student got a lab report back with "-4.5 % error" written in red on it. He had found the boiling point of an unknown liquid to be 45 C. What is the correct boiling point of his unknown liquid? I know first I would write -4.5 % error = |4.5-x|/x x 100
  53. Chemistry please help

    An Ap student got a lab report back with "-4.5 % error" written in red on it. He had found the boiling point of an unknown liquid to be 45 C. What is the correct boiling point of his unknown liquid? I know first I would write -4.5 % error = |4.5-x|/x x 100
  54. ANALYTICAL CHM

    What are the possible sources of error in using a graduated pipet? in using a buret?
  55. Analytical Chemistry

    What are the most common sources of error in weighing solid samples ?
  56. Chemistry

    Experiment 10: Which Fuels provide the most heat? There are many possible sources of error in this experiment. List three that you can think of. Would each error have a large effect, a medium effect, or a small effect on the calculated heat content of a
  57. Physics

    Name any Margins of error that would happen in the lab "Which path requires the most energy? (gas)
  58. biochemistry

    i am currently doing an iodine value lab an error occured in my results and i do not know how to write up the conclusion and the discussion
  59. chemistry

    what are the possible sources of error that might lead to an erroneous determination of the concentration of the acetic acid?"
  60. Science

    1.How can a model be used to determine possible sources of error in an experiment and to identify questions for further investigation?
  61. Physics. Error equations. Please help!

    These two equations concern a lab on the measurement of E/M by the Brainbridge Method. I need to derive the absolute error for two different equations, the first one is: e/m = 2V/B2R2 treat (e/m) as a SINGLE VARIABLE when doing the derivation. The second
  62. C++ Programming

    Hello. I use Visual C++ 2010 Express and don't know why this is occuring. I go into Skript.rc Push F7 to build the RC script first. Output says... Fatal error RC1015: cannot open include file 'afxres.h' Other sources tell me to replace it with windows.h
  63. physical chemistry

    at least 6 sources of error of determining concentration quotient of FeSCN? plzzz sir
  64. grammar

    The patient was placed in the wheelchair with the fractured tibia. A Verb tense agreement error B Subject/verb agreement error C Pronoun agreement error D Modifier placement error E Parallel structure error My answer is c
  65. Sentence Agreement Errors

    What agreement error would this sentence be? One of the options concerning his future surgeries were discussed with him. Verb tense agreement error, subject/verb agreement error, pronoun agreement error, modifier placement error or parallel structure error
  66. Chemistry

    Possible Sources of error in a reaction or sodium bicarbonate and acetic acid. Also known as baking soda and vinegar.
  67. presentation essential

    dentify and evaluate the three specific credible sources of information on that topic based on the information on evaluating sources in your textbook on pages 179 – 181. Identify and discuss the criteria that were used to evaluate those three sources and
  68. english

    Choose the word needing an apostrophe or an apostrophe and an s. If the sentences is correct, choose no error. 1. Why havent you dotted your j’s? haven’t **** j’s’ no error 2. Ounce for ounce, humans aren’t as strong as most insects. human’s
  69. chemistry, physics

    What is the most important source of error in the calorimeter experiment? I know few, but I don't know what is the most important source of error. Stirring error the calorimeter is not properly insulated Calculation error Measurement error in volume and or
  70. Grammar-agreement errors

    Match the correct type of agreement error to the sentence. a. Verb tense agreement error b. Subject/verb agreement error c. Pronoun agreement error d. Modifier placement error e. Parallel structure error 1. He complains of abdominal, neck, and chest pain
  71. Propagating error

    Find the absolute and percent relative error for each calc. b) 81.5 (+/- 0.5) x 40.2 (+/- 0.2)/ 21.8 (+/- 0.2) my answer for absolute error was 150. +/- 200, which is outrageous. Can someone show how they would do it so I can compare and find my mistake?
  72. physical chemistry

    salam.... plz give me some sources of error of determining concentration quotient of FeSCN? plzz urgent
  73. Chem Lab Help

    I wanted to know if any one has done the Determination of ASA Content of Tablets Lab Report. I need help doing the post lab questions
  74. Documening sources

    Provide three credible sources from the internet for expository essay and cite the sources in APA format.
  75. healthcare

    Identify and discuss at least 2 specific sources of health care statistics. These sources can be examples of either primary or secondary data sources.
  76. Chemistry

    Oxygen gas and hydrogen gas are used to synthesize dihydrogen monoxide. A lab group utilizes 1.00 liters of oxygen and 1.01 liters of hydrogen to create 0.75 grams of product. How many milliliters of product should the group have expected to get? What will
  77. Calculus (answer check)

    The measurement of the radius of a circle is 16 inches, with a possible error of .25 inches. (Use differentials to approximate the possible propagated error and the percent error. Propagated error= 1.6% Percent error= 4.6%
  78. Algebra 2: Prob and Stats

    A survey of 480 high school students found that 37% had a pet. Find the margin of error. Round to the nearest percent. Use the margin of error to find an interval that is likely to contain the true population proportion. * margin of error = +-5% interval,
  79. Chemistry

    Oxygen gas and hydrogen gas are used to synthesize dihydrogen monoxide. A lab group utilizes 1.00 liters of oxygen and 1.01 liters of hydrogen to create 0.75 grams of product. How many milliliters of product should the group have expected to get? What will
  80. chemistry

    If the atmospheric pressure is not corrected for vapor pressure of water, what effect will this have on number of moles of oxygen calculated? Use numbers from your experiment and determine the percent deviation caused by this omission. Is this a
  81. ENG COMP

    List the sources you have found that you believe will be most helpful to you in preparing your final research paper. Identify the types of sources you believe will be most useful and where you intend to search for these sources.
  82. Microbiology

    How can lab practices and safety precautions help reduce hazards in a lab setting? How do you handle blood cultures and pathogenic strains in a lab to minimize contamination?
  83. Grammar-agreement errors

    Match the correct type to agreement error to the sentence. a. Verb tense agreement error b. Subject/verb agreement error c. Pronoun agreement error d. Modifier placement error e. Parallel structure error 1. A small laceration was on the patient's ear that
  84. Calculus

    Estimate delta(x) using the Linear Approximation and use a calculator to compute both the error and the percentage error. f(x)=cosx a=(pi/4) delta(x)=.06 delta(x)= ______ i got this part and it's -.04242 The error in Linear Approximation is: and The error
  85. GYRO COMPASS

    A gyro compass is affected by 2 errors. Speed error and latitude error. I have no idea why this should be. Can anyone offer an explanation. Thank you, Mike. Since this is not my area of expertise, I searched Google under the key words "gyro compass error
  86. Biology

    three similar celery stalks are placed in solution of dye for 5 mins to examine diffusion in living cells. what are some possible sources of error? suggest improvements to the experimental design?
  87. science

    hello i need help Problem How could renewable energy sources be used in a house? Devise a Plan 1. Consider what you learned about renewable energy sources. Use what you learned to design a house that operates entirely on renewable energy sources. Focus on
  88. Chemistry- Dr.Bob222

    Is there an actual value for the buffer capacity of acetic acid? I need to know the actual value, so that I can calculate the percent error for my lab.
  89. Calculus

    Suppose a cylindrical can is manufactured with radius r. The manufacturing process makes the length r imprecise; r can be off by ±0.03 cm. The manufacturing process makes the height of the can precisely equal to three times the radius r (including any
  90. PHP Coding

    I got an error with this line. Could anyone check what's wrong? 64 define('QA_MYSQL_TABLE_PREFIX', 'QA_); the error message: Parse error: syntax error, unexpected ''); ' (T_CONSTANT_ENCAPSED_STRING) in
  91. Chemistry

    For an enthalpy lab, why would calculated value differ from the theoretical value (in percent error) for the heat reaction of Mg/HCl and MgO/HCl
  92. Grammar-agreement errors

    Match the correct type of agreement error to the sentence. a. Verb tense agreement error b. Subject/verb agreement error c. Pronoun agreement error d. Modifier placement error e. Parallel structure error 1. Although they seemed inflamed, the site of the
  93. English

    In this sentence, is there an error in one of the lines or is there no error The hikers caught sight of deers running through the forest no error
  94. algebra 1 function question

    given functions f(x) = 3x-5 and g(x) = 1/3 - 4/3x correct the error g(-3) = 1/3 - 4/3(3) = 1/3-4 = - 3 2/3 error i believe is 3 should be -3 so g(-3) = 1/3 - 4/3(-3) 1/3- (4/3 times -3/1) = 1/3 -( -12/3)= 1/3 +12/3 = 13/4 = 4 1/3 other one: f(1) = 1/3 -
  95. Science

    Problem How could renewable energy sources be used in a house? Devise a Plan 1. Consider what you learned about renewable energy sources. Use what you learned to design a house that operates entirely on renewable energy sources. Focus on three major needs:
  96. Grammar-agreement errors

    Match the Correct agreement error to the sentence. a. Verb tense agreement error b. Subject/verb agreement error c. Pronoun agreement error d. Modifier placement error e. Parallel structure error 1. The restoration appear to be excellent, as do the
  97. Chemistry Lab

    In chemistry we are doing a lab that involves crucibles and Mg ribbon, we have three days to complete the lab. Anyways do you think it would be alright to substitute the mass of the crucible we had the first day with the mass of the crucible we had today?
  98. science

    2. Alex, a fresh graduate chemical engineer, started his job by a mission requested by his boss. He was supposed to prepare a small amount of ethylene in the lab, to use it later for polyethylene synthesis. His boss, OE, also known as “The Monster” did
  99. Chemistry (check)

    12) Relative error is also called _______ I got accepted value decimal error? Relative error multiplied by 100 is called percent error. Errors are classified as relative or absolute.
  100. Com 150

    Provide three credible sources from the internet for your expository essay and cite the sources in APA format. I have the three credible sources but not exactly sure how to "cite the sources in APA format." The topic is Suicide and the three subtopics are