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!

40,446 results
  1. Chemistry

    We performed a lab in class about a month ago concerning different types of equilibrium. One particular portion of the lab adding 5 mL of .3M HCl to 5 mL of .3 M Pb(NO3)2. After a precipitate finally formed, 8 mL of water was added to dissolve PbCl2. One

  2. Science 8

    why is sugar more soluble in water than in canola oil???? in english please ive asked this question and it didn't make sense

  3. 12 Chemistry

    What is the molar enthalpy of combustion of magnesium? This was the lab question that I was asked to find after performing a lab based on Hess' law. I can't find anywhere in my notes how to calculate this, and the text book doesn't explain their steps

  4. language

    Which sentence is written correctly?(1 point) A. "Didn't you say I could go?" asked Ben. B. "Didn't you say I could go? asked Ben." C. Didn't you say I could go? asked Ben. D. "Didn't you say I could go"? asked Ben. i think A

  5. Discrete Math

    A professor gave his 40 students a test with three questions. Every student answered at least one question. Ten didn't answer the first question. 14 didn't answer the second question. 12 didn't answer the third question. If 18 students answered all three

  6. URGENT Spanish help please.

    ok in the example it shows: ¿Comprendes espanol? Si, lo comprende ok for this question it's asking 1) do you and your siblings practice tennis my response: no, no los practicamos.. it said i was wrong how would I correct that 2) it asked does your mother

  7. Math

    I'm in seventh grade and working on this math test based on lines and planes. I'm stuck on this one question and I don't understand what the question is asking me to do. The question is: Identify a segment skew to GH. I am not asking for the answer, I am

  8. chemistry

    Outline a separation scheme for isolating pure isopentyl acetate from the reaction mixture. ( post lab question for the Banana oil lab)

  9. astronomy

    Put a pencil straight down into a glass of water. Notice whether the pencil looks bent. Now tilt the pencil and note how its apparent bending changes. How does this illustrate why light from objects near the horizon is refracted more strongly? Quit posting

  10. AP BIOLOGY LAB

    I am doing an ap biology lab on plant photosynthesis. It's specifically lab # 4 on plant pigments and photosynthesis and it's on question # 8 on Exercise 4B: Photosynthesis/ The Light Reaction. Identify the function of each of the cuvettes. I already have

  11. chemistry 11

    i did a lab on separation of salt and sand. the initial mass that my teacher gave me was the stock mixture that was: salt= 54.79g; sand= 97.90g. after the experiment my mass were as follow: salt= 1.35g; sand= 3.17g. question #1 was asking about the %

  12. english

    Question #1 Is the following sentence written correctly? Yes or no? 1. “Hey,” he asked, “who are they?” 2. “No,” she said “that is not painful.” 3. “His mother, he said, “is taking night classes”. 4. “Mother,” he asked. “May I

  13. Physics

    A projectile is fired in such a way that its horizontal range is equal to 2.6 times its maximum height, what is the angle of projection? I know a similar question was asked, but I didn't understand the solution.

  14. adult education

    at the end of an interview you are asked this question "how is this interview going" ,what is the appropriate response

  15. math

    suppose you are in a room that has two identical doors. Behind one door is riches, wealth and fame beyond your wildest dreams. Behind the other door is a firing squad that does not miss. Youdo not know which door is which, however there are two identical

  16. Geometry

    I HAVE A QUESTION. When I post a question and there is now response to it does it means that my answer to my questions are correct? I post two questions yeaterday and received no response .Today I post the same two questions and still got no response. They

  17. Eugenol

    I isolated eugenol from cloves in the lab using extraction and steam distillation but we did not do infrared. The lab report question is: Description of Method. I'm not sure what to put. We prepared the spice, did steam distillation, extracted the

  18. biology

    please help me on this one...i need to know how a paramecia responds to certain stimuli....like fresh water, drop of dilute salt water, drop of vinegar, piece of food, air, and carbon dioxide. I need to know if it responds to a positive, negative or a no

  19. English

    In the following example, what type of constructed response question is being used? In the story of the three little pigs, what material did the third little pig use to buy his house? Application – ‘Think and Search Question’ Knowledge or

  20. English2- revised

    Question In what ways are full-sentence outlines more beneficial than topic outlines? If someone asked, ¿Wouldn¿t it be simpler just to write your paper than to create a full-sentence outline?¿ how would you answer? Explain your response. What steps

  21. MTH233/statistics UOP

    You work for the public relations department of the Social Security Administration. In an effort to design better advertising campaigns, your department decides to conduct a survey to find out the opinions people in the United States have about the Social

  22. 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

  23. English Help - Steve

    Identify the participial phrase in the sentence below. Picking up the pen, he signed his name on the guestbook. A. Picking up the pen B. he signed C. signed his name D. on the guestbook I think it is A - I asked this question earlier and did get a response

  24. math help please

    Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. x + 5y = –20 y = –7/8x – 1 32x – 28y = –36 parallel perpendicular neither I think it's perpendicular - asked this question earlier but didn't get a

  25. algebra

    please see below on this page 4 my question. I got an answer, but it wasn't helpful please don't 4get about my question i didn't get any help on it yet thank u

  26. Chemistry

    I have spent all afternoon (on Thanksgiving, no less) trying to figure out these post-lab questions. We had to produce a precipitate of a reaction of: 1) 1 ml 1M Na2SO4 + 9mL 1M CaCl2 Our result was .569g 2) 5 ml 1M Na2SO4 + 5 ml 1M CaCl2 Our result was

  27. Physics

    I have 2 questions...one can someone please read my question posted around noon today called Lab for physics? Thanks..and secondly, I have to derive some equation. I am supposed to show a=gtantheta and find this from m (mass) L (length). The question also

  28. Statistics

    Please post your response in this question here is my original question that didn't get answered. h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 4 5 5 3 7 3 0

  29. CHemistry- For Dr.Bob

    Hey Dr.Bob, I asked two days ago a question about a titration lab I had that you answered, but I still have one more question about that lab. Here's the lab summary: For my chemistry of solutions class, we had a titration lab where we titrated NaOH into an

  30. stat

    ok there was a question that my teacher told me i got wrong the question asked me to compute the mean which I did... then the question went on to tell me compute the mean with another observation equal to zero then the part that he drew the line through

  31. science

    Share your response to the following Analysis and Conclusion question of the lab you just completed with your classmates: Did the data support or reject your hypothesis? Using the data you collected, explain why or why not. Respond to at least two other

  32. English

    Share your response to the following Analysis and Conclusion question of the lab you just completed with your classmates: Did the data support or reject your hypothesis? Using the data you collected, explain why or why not. Respond to at least two other

  33. confidentiality of health info,.

    Sould corrections on a medical record(computerized medical database) be dated and time stamped? define the three childrearing styles In the future, rather than putting this as a response to a question, use the "Post a New Question" link. Putting your

  34. Chemistry 101

    I had a snag from a question I asked yesterday, here is the thread. (My snag being the final post) I am trying to find the theoretical yield for this lab I am working on. The steps to finidng it would be great. In my lab I took 40mls of H2O + 4g of AgNO3+

  35. Language arts

    A) Ben wants to show hesitation from his character in his narrative. Which sentence is correctly written to show hesitation?(1 point) I don't know—I mean—um—the thing is—I'm not sure. I don't know ... I mean ... um ... the thing is ... I'm not

  36. Calculus

    I saw this question asked, but I didn't understand the answer format. My prof doesn't use dx and dy after he has differentated the problem. He just uses (for example) 8x+2+y+xy(prime) The question is this: 4x^2+2x+xy=12 and y(2)=-4 find y(prime)(2) by

  37. Chemistry

    I am trying to find the theoretical yield for this lab I am working on. The steps to finidng it would be great. In my lab I took 40mls of H2O + 4g of AgNO3+ 8g of NaCL then I stirred it and filtered in a buchner funnel to be left with 6.7496g of silver

  38. Chemistry

    I'm in 10th grade and we did a titration lab; with every lab we have to answer follow up questions and I'm totally stuck on this one: We did not uses the volume of the water added initially to the Erlenmeyer flask in our calculations. Why? Ok as far as

  39. Social Studies

    What is Feudalism and how did it work? Just asking for a helpful article or something like that since other people helped a lot on the last question I asked by giving a article out. Tia! :-)

  40. U.S.History

    i know i've asked this question before but i never get a clear response.. i don't want the answer, but pleeeaes give me some information or some sites that have GOOD information. Discuss how both the North and South defended their position on the question

  41. Chemistry

    I am trying to find the theoretical yield for this lab I am working on. The steps to finidng it would be great. In my lab I took 40mls of H2O + 4g of AgNO3+ 8g of NaCL then I stirred it and filtered in a buchner funnel to be left with 6.7496g of silver

  42. chemistry 11

    i did a lab on separation of salt and sand. the initial mass that my teacher gave me was the stock mixture that was: salt= 54.79g; sand= 97.90g. after the experiment my mass were as follow: salt= 1.35g; sand= 3.17g. question #1 was asking about the %

  43. science(chem 11)

    did a lab on separation of salt and sand. the initial mass that my teacher gave me was the stock mixture that was: salt= 54.79g; sand= 97.90g. after the experiment my mass were as follow: salt= 1.35g; sand= 3.17g. question #1 was asking about the %

  44. science

    What type of organism makes restriction enzymes? How did restriction enzymes evolve? How do scientists use restriction enzymes? If you digest an entire human genome with a restriction enzyme you get a blurry smear in the lane of the gel. Why? I have a quiz

  45. AP Biology

    Okay, so in the Lab Assignment that I'm currently working on in AP Biology, there is a question that says: - What results would you expect if a dialysis bag were filled with glucose and iodine and then placed into a beaker of starch and water? Its a

  46. Biology

    Okay, so in the Lab Assignment that I'm currently working on in AP Biology, there is a question that says: - What results would you expect if a dialysis bag were filled with glucose and iodine and then placed into a beaker of starch and water? Its a

  47. 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

  48. psychology

    In class we were asked to provide an one example of classical and operant conditioning. We have to identify the stimulus, response and reinforcers in each example. here are my examples: Clasical Conditioning- My cat comes running everytime she hears the

  49. S.S.

    Why didn't Native Americans like signing papers. HA HA sorry I asked earlier. But my partner just called me and said she didn't find her answer. =P

  50. Science

    For science class, we had to do a lab that involved parachuting eggs off a third floor window of our school. This lab would help us learn the forces of gravity, friction, and air resistence. We were supposed to construct a parachute that would make our egg

  51. Classroom Management

    In the 6th grade social studeis class Mrs. Jones asked Tom to stop talking with his neighbor, but he continued. After three other reminders, Mrs Jones asked Tom to move to another seat. Tom refused saying "You can't make me move.: What would you do? Short

  52. SOCIAL STUDIES

    I need to know about current events happening in France. Please list some current events or give me some helpful sites. Thanks!!!:):):):):):):) (GuruBlue the site you gave me didn't work instead it brought me to google so please try giving me HELPFUL

  53. Chemistry

    1. Imagine that you work at a company that prepares chemical solutions. You are asked to label a solution to sell to different customers. One customer is a hospital, another is a chemistry lab at a university, and a third is a physics lab at a university.

  54. 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

  55. English

    He asked me a question. He asked a question of me. He begged me a question. He begged a question of me. He inquired me a question. He inquired me of a question. (Are the pairs all correct and interchangable? Doe they have the same meaning?)

  56. intro to Psychology

    I am working on some homework where I have to identify the unconditional stimulus, unconditional response, conditional stimulus, and conditional response. I am finding this very diffucult and didn't know if there was any one out there that could help me.

  57. English

    The officer asked his subordinates to put their files away after completing in good shape. John asked his son angrily, why he didn't put his books away after reading it. John asked his friend Joe not to put his books away as he would still to read it.

  58. 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

  59. bobpursley

    I had ask this question of you before but I didn't understand your response. Can you please clearify further. The question is: a skateboarder moving at v = 5 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at

  60. math

    I asked this yesterday and didn't get a response. I know it is difficult since you can't see the picture on my homework. Can you tell me if I started correctly and used the correct formula for surface area of a triangular prism? Is there a way to post a

  61. English

    I’m helping my son with his homework. He is suppose to boldface the topic and underline the opinion/attitude. 1. His presentation of the new material was terrific! Is the topic presentation or presentation of the new material? 2. Jonah’s response to

  62. english

    I did a exercise with indirect speech, can anybody check it? 1. "Have you visited the NA?" she asked me. -> She asked me if I had visited the NA. 2. "What do you think of the hotel food?" I asked her. -> I asked her what she thought about the hotel food.

  63. English

    For homework i was asked to write a personal response to one of the poems that we did in class ("the great hunger' section 1 by Patrick Kavanagh) I really don't know how to start, I read that "personal response" is what i think about the poem but what kind

  64. Calculus

    For what value of t is the slope of the curve undefined for the graph defined by x = 10 – t^2, y = t^3 – 12t? Type your answer in the space below to the nearest whole number. (ex: 4) NOTE: I asked before this question but I didn't get the answer. I

  65. WHY?

    WHy are my questions being deleted? plz help me..i didn't mean to be rude :( Repost please. Please post under just one name. Posting several questions under differing names (Julia, Steph, etc) is not conductive to a healthy relationship to those

  66. Spanish

    I have two questions about translation. If asked this question, how do I answer it. Cual es tu numero de telefono? I know it is asking my phone number which is 447-7161 but I don't know how to put it in sentence form. The next question is Que te gusta

  67. Logic and Design

    I need help with pseudocode, and any help regarding forming these programs in Visual Logic would be helpful as well. Question 1: You have been asked to design the logic that will display each of the following lines to a screen. John Doe 52 The end Program

  68. english (gurublue or anyone)

    I'm stumped on what seems to be a fairly easy question that has been asked of me after reading about "Mike Rose". I will summarize the story and provide the question that has given me the mental block. Simple story... Mike Rose as a kid didn't do well in

  69. LiViNgEnViRoNmEnT

    A while back, I posted a question about mitosis and meiosis, but I didn't bookmark it and now I can't find it. That's why I'm asking again: How many chromosomes do you start out with and end with in meiosis? In mitosis, you start with one parent with 4

  70. physics

    Hi i'm doing that lab were you attach a weight to a tape which is also through a timer that puts marks on the tape at a given time interval ok I'm asked why is gravity different than on Earth? I don't rember the physics answer behind it I remeber Fg =

  71. Philosophy

    key contributors to Christianity's's impact on philosophy http://ca.answers.yahoo.com/question/index.php?qid=20061025190551AAhv40b Here's an interesting response to this same question. There are some good ideas here to follow up on. Please note that we

  72. Chemistry

    I'm doing some post lab questions and I'm stuck on one. In lab we performed Tollens test, Fehlings test, and Jones Oxidation to differentiate our unknown between an aldehyde or a ketone. The question I'm stuck on is " older bottles of benzaldehyde are

  73. Calculus

    The question is, if f(x) is equal to the series from n to infinity of a sub n times (x-7)^n for all n, find a formula for a sub 10. (I apologize for typing it out in the way that I did, but it was the only way I could. I don't quite understand what is

  74. Socials-Ms. Sue

    Ms. Sue, thanks to you, I have got to know a lot about Voltaire. Seriously If I have to pick a philosopher that I would agree with, then it would be Voltaire as well. In my book there was very little info about him, so that's why I didn't really get to

  75. jiskha review

    Hello my name is am i am making a review on this site. Jiskha is a wonderful, excellent and spectacular site to go to for school help. Jiskha helped me birng my grade up from a 60 to an 80. If I asked a question and i had a quick response. Jiskha does not

  76. english 2

    Serious Story They were all slouching in their seats; making it obvious they didn’t want to be there. One was holding on to practically cradling his blue bandana, another was looking at a bruise he had received during a fistfight earlier that day. There

  77. English

    Hi! I'm new here, but I have a quick question. I have been trying to learn how to use words figuratively. My professor gave us a list of words and we had to define them literally, figuratively and contextually. I have the literal and contextual down pat,

  78. history

    The following links provided weren't helpful.. I used them to discover parts of my answer though. Can someone check my answer and help me with questions 2? How does the Euthyphro Problem attack modern cognitive religion? Is there a response that would

  79. Mathematics

    Hey, I asked this question before, but never received a response. The line represented by 2y = 6x + 8 is dilated by a scale factor of k centered at the origin, such that the image of the line has an equation of y = 3x+ 12. What is the scale factor?

  80. Human Service

    I am trying to understand this question. I have to list and helpful and unhelpful response that i have personally have experienced

  81. To:Damon

    You didn't help on the second question I asked so I posted it again, please help thanks:)

  82. Pre Calc--- Repost

    I already asked this, but I didn't really understand the answer I got. I got the general idea, but I don't have a good enough understanding to answer the question. Writing to Learn: In a certain video game a cursor bounces back and forth horizontally

  83. Calc-Derivatives

    I asked this before and did not get a response so I am trying again. (Note, I didn't know how to type the symbol for pi) What is the derivative of: 2pi^2r^4 would it simply be 8pi^2r^3? I was thinking the 2pi^2 is simply the equivalent of a constant in

  84. Biology

    I had a Bio lab about gel electrophoresis and PCR. for each lab, we have to make up thoughtful, detailed questions. You don't have to answer the questions so please don't go through the trouble by answering them. The first question is about something we

  85. com220

    If someone asked, "wouldn't it be simpler just to write your paper than to create a full-sentence outline?" how would you answer this question? explain your response.

  86. Human Service

    I am still trying to understand this question. I need to generate a list of helpful and unhelpful respones that I have personally experienced? What is it really asking, because I know I have expercience it but don't know how to word or give the answer

  87. Science

    How could I estimate how long osmosis takes to occur in a potato? Will it depend on the salinity of the solution it is submerged in? Were I to make a prediction on how long it would take for osmosis would occur in my lab, how could I scientifically prove

  88. English

    I asked a question earlier about creating a title for an article i wrote in English, the article being about school, and the pressure to achieve and the stress on students, and I can't figure out a good title, I've gotten some help from people and

  89. ethics

    Why are the concepts of race and ethnicity important to United States Society? The concepts of race and ethnicity are important to U.S. society for two main reasons. First, the U.S. enslaved African-Americans for over 200 years. Their descendants still

  90. Math Statistics

    A poll wishes to determine how many Americans agree with the policies of the current president. Pollsters contact 5,000 voters and ask the question: "Do you approve of the president's policies?" The poll produces 1,789 yes answers and 3,211 no answers. 1)

  91. Physiology

    Which one(s) of the essetional chemcial elements (C, H, O, N) does blood contain. You only need to ask the question once. Additional repetitions will not get you a faster response. An answer to your question can be found in response to your other post(s).

  92. Science

    Hi any info on water purification that can be done in the science lab would be real helpful... thanks a heap Minnie

  93. history

    im working on persuasive essays, the question is asking me to write a response showing where his essay proves to be more persuasive. Could i get some help on which points were more persuasive than others? i didn't think his speech was meant to be

  94. trigonometry

    a question just like this one was on one of my homeworks..i asked for help but i didn't understand the explanation..so i had to gues..nd now i have that kind of quesion again on my homework. pleease explain this thoroughly find the value of s in the

  95. 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.

  96. philosophy

    describe Christianity’s impact on philosophy. Include the following topics in your response: - the rise of Christianity in philosophy - key contributors to Christianity’s impact on philosophy - principle Christianized philosophical issues

  97. Earlychilodhood education

    Question 4 of 20 5.0 Points Karen asked, "Where does rain come from?" The best response for her teacher is: A. "The clouds." B. "I don't really know, Karen." C. "How could we find out where rain comes from?" D. "That's really hard to understand, Karen."

  98. English

    What is the importance of an individuals response to conflict? I have somewhat an idea but I would like to have different perspectives of people on this question so I can somewhat incorporate it into my response.

  99. Math

    –12 ÷ 3 • (–8 + (–4)2 – 6) + 2 Prepare your response to this question. When you are ready, you may submit your response as an audio recording or as a written essay. Be sure to include the following:

  100. English - The Lovely Bones

    I asked this question yesterday but no one has answered thus far so I thought I'd try asking again: If anyone has read The Lovely Bones novel could you please explain 2 things to me. 1) Is Ruth Connors able to see the dead? When she moves to NYC she writes

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