ht tp :/ /i1. ti nypi c.c om/ 7yr papx.j pg I did this experiment about antacids and i have to write three validity issues i could've had. I have two but I need one more. 1. I should have

4,183 results

  1. Language Art

    1. The conclusion in a science text? A describes details involved in completing the experiment B shares the data found after an experiment is concluded C gives the background and purpose of an experiment D interprests the results of a completed

  2. Science 8A Electromagnetism

    Hi, Umm, can someone give me an example because I'm kind of confused. I need help! Please help me! For this portfolio, you will design an experiment to investigate the relationship between the number of coil loops and a strength of a solenoid. Once you

  3. math

    A biologist grows a culture of bacteria as part of an experiment. At the start of the experiment, there are 75 bacteria in the culture. The biologist observes that the population of bacteria dobules evert 18 minutes. Which of the following equations best

  5. Science

    Portfolio: you will design an experiment to investigate the relationship between the number of cool loops and the strength of a solenoid. Once you have an experiment plan carry out your experiment and record your data. After you have finished conducting

  6. Science independent variable

    A scientist designed an experiment to test the effect of temperature on bacterial growth. He grew three different cultures of the bacterium E. coli under three heat lamps at different temperatures. What was the independent variable in this experiment?

  7. Science

    1. The ? is the part of an experiment that is not being tested and is used for comparison. (7 words) 2. The ? describes the steps you use during an experiment. (9 words) 3. After an experiment, scientists write a ? which summarizes their experiment and

  8. science

    Design an experiment to verify that new substances are formed and heat is released or absorbed during a chemical reaction. i dont know what experiment to do and im stuck please help :(

  10. Work like a scientist

    If an experiment disproves a scientists hypothesis,what should the scientist do next? A.)Develop a testable question. B.) Revise the hypothesis and try the experiment again. C.)Develop a theory based on the data gathered in the experiment. D.)Change the

  11. Sciene

    Portfolio: you will design an experiment to investigate the relationship between the number of coil loops and the strength of a solenoid. One you have an experiment plan, carry out your experiment and record data. After finishing conducting experiment,

  12. Science

    My assignment is to make an experiment to investigate the effect different forces have on an object’s motion. And this should test at least one of the laws of motion. Now all I ask is an example of an experiment I could do. I'm having trouble coming up

  13. chemistry

    In one experiment, the reaction of 1.00 g mercury and an excess of sulfur yielded 1.16 g of a sulfide of mercury as the sole product. In a second experiment, the same sulfide was produced in the reaction of 1.52g mercury and 1.02g sulfur. a) What mass of

  15. biology

    Q: Analyze an experiment in which one group of plants receive extra fertilizer and another group receives extra water. Is the experiment controlled or uncontrolled? Support your answer. My answer: The experiment is uncontrolled because there is no

  16. Mat/116

    An experiment is underway to test the effect of extreme temperatures on a newly developed liquid. Two hours into the experiment the temperature of the liquid measured to be -17 degrees celsius. After eight hours of the experiment the temperature of the

  17. Chemistry

    Consider the following chemical equation: TiCl4(g) + 2Mg(l) → Ti(s) + 2MgCl2(l) 3.54×107g of TiCl4(g) were reacted completely and 7.91×106g of Ti(s) was obtained in the experiment. a. Calculate the theoretical yield of Ti(s). b.What is the actual yield

  18. General Science

    you plan an experiment to test the growth of beans using three different fertilizer. What are the dependent and independent variables in the experiment?

  20. chemistry

    Ethanol was used in the solutions to help dissolve the acetylsalicylic acid. Ethanol is slightly acidic, and will react with NaOH. Describe a blank correction experiment; i.e., what experiment you might do to determine how much NaOH reacts with the ethanol

  21. Physics

    Three identical conducting spheres initially have the following charges: sphere A, 4Q; sphere B, -9Q; and sphere C, 0. Spheres A and B are fixed in place, with a center-to-center separation that is much larger than the spheres. Two experiments are

  22. Biology

    A scientist performs a controlled experiment. This means that A) the experiment is repeated many times to ensure that the results are accurate. B) the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions

  23. Algebra 2

    The temperature of a liquid during an experiment can be modeled by the function f(x)=3.8cos(πx20)+2.2 , where f(x) is the temperature in °C and x is the number of minutes into the experiment. What is the lowest temperature the liquid reached during the

  25. science

    If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the

  26. math

    An experiment consists of flipping a coin 3 times and noting the number of times that a heads is flipped. Find the sample space S of this experiment. S=?

  27. science

    I have a science experiment and I'm not sure how to do this or have all the materials to do it can anyone help? For this portfolio, you will design an experiment to investigate the relationship between the number of coil loops and a strength of a solenoid.

  28. Biology

    Why are most factors held constant in a scientific experiment? Answer: the only part of an experiment that ever changes is the independent variable.

  30. math

    Scientists are conducting an experiment with a gas in a sealed container. The mass of the gas is measured, and the scientists realize that the gas is leaking over time in a linear way. Six minutes since the experiment started, the gas had a mass of 144

  31. Science

    When a scientist conducts an investigation, which of the following is the first thing he or she should do? A. Design the experiment. B. Make hypothesis. C. Identify the problem. **** D. Form conclusions. A summary of what you have learned from a scientific

  32. psychology

    When an experimenter's expectations about a behavior influence the results of his experiment, it is called a a.placebo effect b.self-fulfilling prophecy c.single-blind experiment d.double-blind experiment

  33. science

    After an experiment, scientists write a ? which summarizes their experiment and results

  35. physics/chem

    n Fig. 21-41, three identical conducting spheres initially have the following charges: sphere A, 7Q; sphere B, -8Q; and sphere C, 0. Spheres A and B are fixed in place, with a center-to-center separation that is much larger than the spheres. Two

  36. science - biology

    A photosynthesis experiment uses Chlorella to track the route taken by 14C in photosynthesis. The 14C is provided from CO2 and no new sources of CO2 are available. After the experiment the scientist extracts all of the starch produced and analyses the

  37. science

    Do houseplants affect the quality of air in a house? Describe an experiment that would answer this question. What gases do you want to measure? I answered yes since plants give off oxygen which animals need to survive. I need a little help with the

  38. Chemistry

    In this experiment the only source of Ca2+ ions is Ca(OH)2. Using the experimental Ksp value, calculate the slubility of Ca(OH)2 (in mol/L) in .30 M NaOH. Experiment Ksp = 1.69x10^-5

  40. Statiatics

    Need help please. Determine whether each experiment is a binomial experiment or can be reduced to a binomial experiment. If so, describe a trial, determine the random variable, and state n, p and q. a) You roll a die 15 times and find the sum of all the

  41. Science

    If an experiment disproves a scientists hypothesis, what should the scientist do next? A. develop a testable question B. revise the hypothesis and try the experiment again. C. develop a theory based on the data gathered in the experiment D. change the

  42. Chemistry

    Our class did an expeiment of adding sodium carbonate and calcium chloride. The experiment only yielded 28% of the calculated yield. The class did the experiment as a group (there are only 4 students in our class) and the experiment was closely supervised

  43. mat/116

    need an expression only to this word problem: An experiment is underway to test the extreme effect of a newly developed liquid. Two hours into the experiment the temperature if the liquid measured to be -17 degrees Celsius. After eight hours of h

  45. psychology

    What was the first experiment in which B.F. skinner tested the theory of operant conditioning? Details on the experiment? Any help would be appreciated. =)

  46. Chemistry

    The procedures of an experiment state that 1.3 g of copper (Cu) should be produced. However, the scientist’s experiment produces 0.9 g. What is the absolute error?

  47. physics

    In three to five sentences, design an experiment to investigate the relationship between the applied force and the displacement of the spring. Conduct the experiment and explain the results.

  48. Psychology

    To establish a cause and effect relationship, which should be used? Naturalistic observation An experiment A survey A test A case study Wouldn't you need to conduct an experiment..?

  50. psychology

    What implications do the results of an experiment have for subjects that were not observed in the experiment?

  51. chemistry

    Most top-loading balances used in this experiment measure a mass only to the nearest mg(+_0.001g).? This significantly affects the calculation of R in this experiment. Explain why this is so. How might the procedure be modified to compensate for this

  52. chemistry

    Wich of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is titrated to correct for any reactive impurities in the solvent. For this experiment, the impurities would be reducing agents that would

  53. Science

    I did an experiment where I shine a light on a piece of paper to demonstrate how one of the earth's hemispheres tilts away from the sun and the intensity of the sunlight dims causing the seasons. The question asks to identify the two constants in the

  55. science

    ht tp :/ /i1. ti nypi c.c om/ 7yr papx.j pg I did this experiment about antacids and my hyppothesis is that "If I use the generic antacid to create a neutralization reaction, it will have the same effectiveness of the name brand because...." I'm not sure

  56. science

    ht tp :/ /i1. ti nypi c.c om/ 7yr papx.j pg I did this experiment about antacids and i have to write three validity issues i could've had. I have two but I need one more. 1. I should have done more trials for more accurate results 2. when i stirred the

  57. physics

    does anyone know who conducted the experiment or a credible description of the experiment that helped prove Einstein's thought experiment: the twin paradox? as in the experiment in which one cesium-beam atomic clock stays on Earth, while another one takes

  58. Physics

    A very important experiment was carried out at the end of the 1800’s involving testing for the speed of the earth through the ether. (a) State the name of this experiment (b) Describe why the light beams are perpendicular to each other at one stage of

  60. biology

    my quations are without changing appratus in an experiment how can the reliability of the experiment result be improved and also why can small changes in room temperature during the experiment be ignored thank you!!

  61. egg protection device

    Hi. I need to know how to make an egg protection device out of straws and duct tape. Thanks. Experiment! Experiment! Experiment!

  62. Science

    Can any one please please help me with popcorn experiment homework? The materials and 1 pack of Orville and 1 movie theater popcorn and let say the timing for both were 4.5 minutes. 1- what is the variables would you need to keep constant(control) in you

  63. chemistry

    A Biology student wants to know if Mountain Dew will make plants grow faster than water. As a Chemistry student, you have agreed to assist in the planning of the experiment to make sure the student designs a valid experiment. 1) What is the experimental

  65. Economics

    A company is conducting a biochemical experiment for the next 12 months. In the first month, the expenses are estimated to be $30,000. As the experiment progresses, the expenses are expected to increase by 5 percent each month. The company plans to pay for

  66. Biology

    hi! so for science we have to make an experiment on temperature. we have to base our experiment on the given materials (which include test tubes, aluminum foil, cotton, fan) i chose a fan and I'm thinking of doing an experiment on how the strength of wind

  67. physics

    1.will hall voltage be same for conductor and semiconductor in hall effect experiment? 2.can hall effect experiment be used for determining earth's magnetic field? 3.what is the importance of hall experiment? 4. can we use intrinsic semiconductor for hall

  68. Chemistry

    In the experiment of Nucleophilic substitution reactions: Competing Nucleophiles 1)what would happen if all the solids in the nucleophile medium were not dissolved? How might this affect the outcome of the experiment? 2)Explain the order of elution you

  70. Statistics

    2. (TCO 5) A company produces electronic equipments claims that 98% of their products never need any kind of maintenance. We selected 10 of their products and we wanted to know the probability that 8 of them never need maintenance. Choose the best answer

  71. science

    i had to make up an experiment for school. but my teacher said it wasn't an experiment. my hypothesis is that there is a relationship between divorce rates and teens school grades. how do i make this into an experiment. please help!

  72. Physics

    I have an experiment in which I drop a tennis ball ,, and measure its rebound height in every bounce. one of the question regarding this experiment is - were the collisions elastic or not ? support with evidence. How do these forces magnitude compare with

  73. Science

    If an experiment disproves a scientist’s hypothesis, what should the scientist do next? Develop a testable question. Revise the hypothesis and try the experiment again.*** Develop a theory based on the data gathered in the experiment. Change the

  75. science

    If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the

  76. Science

    If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the

  77. Science

    If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the

  78. psychology

    The task is to redesign Milgram's experiment so no one is hurt, physically or emotionally. However, from my understanding, the experiment is designed to test how far subjects will obey an authority figure even if it means inflicting pain on another. To

  80. Chemistry

    1) For a freezing point depression experiment we had to create an ice bath and add salt to the ice. I have to answer the question, why was salting the ice necessary in order to complete the experiment and how does this apply to the principles/concepts

  81. math

    I've been asked to practice writing statistical questions about different topics by conducting a survey or experiment. I understand how to write them by conductin a survery but having trouble understanding what is meant by experiment. For instance of of

  82. biology

    an experiment with only two products used which are yest and sugar what are the outcomes? the procedure to conduct this experiment?

  83. physics

    the estimate and uncertainty for experiment 1 is .15+-.01 and the .12+-.01 for experiment 2. Is the discrepancy between these two data sets significant? Why?

  85. Science

    What experiment did Matthias Schleiden do? What prior information did he use to help him with his research/discovery? What tools did he need to complete his experiment?

  86. Philosophy

    Do you think the Standford Prison Experiment and Miligram Experiment offer a convincing case that free will is an illusion?

  87. Science

    What experiment did Rudolph Virchow do? What prior information did he use to help him with his research/discovery? What tools did he need to complete his experiment?

  88. Science

    For my science (biology) coursework i am doing an experiment involving photosynthesis- the cabomba experiment. I need to know 1- the variables that are controlled and why 2- what equipment is used and why PLEASE HELP... THANK YOU

  90. Science

    As researchers begin their studies, they must examine what they already know about their topic of investigation. Based on that information, they form a hypothesis. the hypothesis is A. a conclusion about what is going to happen in the experiment B. a

  91. science fair

    Writeacher, its me again i just wanted to know if the experiment of the math test and music is enough for the multitasking project or should i include another experiment to prove the hypothesis. thank you soo much.

  92. chemistry

    An experiment is considered a controlled experiment if it contains tests with chemicals.

  93. sociology-pls help

    similarities between milgram's experiment and stanford experiment pls help

  95. trig

    A 600,000-cell bacteria culture is needed for a lab experiment, but you only could purchase 1,000 cells. If the cells double each day, exactly how long will it be before the experiment can be run? Create a model for the bacteria. If the experiment is in

  96. Science

    In an experiment to find out how the proportion of cement in a concrete mixture affects the products strenghth what would be two controlled variables and what could a possible source of error in this experiment be ? Thank you for your help!

  97. Physics

    I had an experiment on Ohm's law using simple circuit however the result of current flow in the experiment and in theory are very different. Can you please explain why this happen? Thankkyouuu in advancee :)

  98. science

    Suggest an experiment to compare the conductivity of electricity by iron, copper, aluminium and zinc. Perform the experiment and prepare a short report on the resu

  100. chemisty

    Gary is carrying out two chemistry experiments. In experiment A he mixes hydrochloric acid with sodium carbonate. In experiment B he mixes nitric acid with copper carbonate. Explain what Gary will need to do in order to test the gas produced in each

  101. biology

    Two students conducted experiments to study the rate of photosynthesis in Lycopersicon esculentum L. Experiment 1 The students designed an apparatus that measures the rate of water absorption. Experiment 2 The students used a setup that measures oxygen

  102. physics

    Which of the following confirms the wave nature of particles? a. Photoelectric effect b. Rutherford's alpha scattering experiment c. de Broglie waves d. Young's double slit experiment

  103. Science

    What is the difference between a controlled experiment and a natural experiment?

  105. Chemistry

    student did the Synthesis of Salicylic Acid experiment using 3.93 g of methyl salicylate. This was the limiting reagent for his experiment. What is the theoretical yield of salicylic acid for his experiment? The theoretical yield is:

  106. Chemistry

    I'm doing an Equivalent Weight and Normality experiment and I got very confused on the discussion questions.[ the unknown is titrated with the KMnO4] 1) In this experiment MnO4- is reduced to Mn2+ by the unknown. What is the equivalent weight of MnO4- for

  107. biology

    14 points Save A photosynthesis experiment uses Chlorella to track the route taken by 14C in photosynthesis. The 14C is provided from CO2 and no new sources of CO2 are available. After the experiment the scientist extracts all of the starch produced and

  108. Chemistry

    Describe 3 experiments, run prior to 1930, and the types of energies/particles used to probe the structure of the atom. What did each experiment investigate? Include the names of the scientists associated with each experiment in your answer.

  110. Chem Help Please!

    Separation / Chromatography Lets assume I have three component mixture of liquids. And I wish to determine the quantity of each component present. I have reference samples of two of the components but the other component is not identified. How do I design

  111. Chem Help Please!

    Separation / Chromatography Lets assume I have three component mixture of liquids. And I wish to determine the quantity of each component present. I have reference samples of two of the components but the other component is not identified. How do I design

  112. Science

    Which of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is composed of the solvent used to dissolve the analyte. For this experiment, the solvent is a combination of sulfuric acid, phosphoric

  113. Chemistry

    Wich of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is composed of the solvent used to dissolve the analyte. For this experiment, the solvent is a combination of sulfuric acid, phosphoric

  115. chem

    Wich of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. The volume required to titrate the blank is subtracted from the volume used to titrate the analyte solution to give the "corrected volume". B. A

  116. Chemistry!

    Experiment on Which Fuels Provide the Most Heat? Comparison of the Energy Content of Fuels. Suppose you put 50 mL of water in the can instead of 100 mL and heated it 40 degrees instead of 20 degrees. In what ways, if any, would this affect the results of

  117. Biology

    While performing an experiment, a positive control group is given a treatment that was used one time previously in another experiment. This time, however, the positive control does not give the expected result that you received last time. Which of the

  118. chemistry

    a chemistry student requires 250 miligramsof a chemicalfor a particular experiment. she has 30grams of the chemical. how many times can the student carry out the experiment?

  120. College Chemistry

    The maximum amount of product D that can be produced from the following reaction is 55.75 g. 2A + B ¨ 2C + 3D Following an experiment based on this reaction, when the D was isolated, 50.67 g of D were obtained. What is the percent yield for this

  121. Chemistry

    Suppose a scientist is doing an experiment to determine the effent of a cancer drug on mice with lymphoma. a)What are some of the variables the scientist should control in the experiment? b)Describe the control group for this experiment. a) I want to say

  122. chemistry

    A student conducts this experiment and finds the boiling point of the unknown to be 80 ± 3 °C. Use the table in the Physical Properties experiment to select all of the following compounds which might be the unknown

  123. chemistry

    A student conducts this experiment and finds the boiling point of the unknown to be 80 ± 3 °C. Use the table in the Physical Properties experiment to select all of the following compounds which might be the unknown

  125. human physiology

    My lab group is looking for ideas for a fun and interesting experiment. We have all the biolab experiment equipment...so some ideas that would affect bp, heart rate, would be so welcomed! Thank you!

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