science

I did this experiment and I found these validity issues: they never specified if temperature to be measured in celcius or faren., they never mentioned that the buckets were to be the same, stirring until your arms get tired is not a good idea, but I need three more validity issues?????

DO you consider the companys conclusion valid? How could them improve?

To prevent future brownfield sites the DEP's concer lies in the fact that the chemical in the wastewater eventually reaches natural waterways and affects drinking water. It decided to test the temperatureeffects of a chemial to the natural water that could be contaminating.
Their experiment was based on this statement: We are trying to determine if adding chamiall X to stream water causes the stream water to rise in temperature.

HEre is the procedure:
1. Take two buckets and fill each one about halfway with tap water.
2. Record the temperature of each bucket of water.
3. Put a shovel full of chemical into bucket number 1 and stir until arms get tired. Record the temperature.
4. Put 2 shovel fulls in bucket number two and record temperature.
So it again for accurate results.
Graph and make conclusion

In one bucket the temperature increased from 15 to 35 degrees and in the other bucket the temperature increased from 15 to 37 degrees. They concluded the chemical was responsible for temperature rise.

  1. 👍
  2. 👎
  3. 👁
  1. Thank you for using the Jiskha Homework Help Forum. First of all WHERE did the experiment come from? Who are THEY? If it came from your textbook, where was it published? If it came from a U.S. site, you can count on F. for the last two.

    We need more information to assist you here.

    1. 👍
    2. 👎
  2. i got this from my teacher and i have to find validity issues for it.
    "They" is the company that did the experiment

    1. 👍
    2. 👎
  3. PS I had to do this too but i don't remember it sorry

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Algebra 2

    URGENT HELP PLEASE the temperature of a room during an experiment can be modeled by the function f(x)=23.7 cos (Pi x /60) +18. Where f(x) is the temperature F degrees and x is the number is hours into the experiment. What is the

  2. AP Chemistry

    These are some lab questions from the following lab: Vapor Pressure and Enthalpy of Vaporization of Water 1. Why does vapor pressure change with temperature? 2. The assumption was made that the vapor pressure of water is

  3. business

    International issues of social responsibility and ethical behavior are: 1.the result of greed found in capitalist countries. 2.found primarily in countries with a low standard of living. 3. a concern only of business professors.

  4. org. chem.

    A student who was isolating aspirin stopped the experiment after the filtration step with alumina. One week later, the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be

  1. chemistry

    a student determines the molar mass of methanol by the method used in this experiment. she found that the equilibrium temperature of a mixture of ice and pure water was .4 degrees Celsius on her thermometer. when she added 10g of

  2. Maths

    The body of a murder victim was discovered at 11:00 A.M. and found the temperature of the body was 94.60°F. The temperature of the room was 700°F. One hour later, in the same room, he took the body temperature again and found it

  3. 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

  4. 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

  1. math

    1. A bag contains 9 tiles numbered 1 to 9. P(4) = 1/9. what type of probability is illustrated and why? (1 point) . experimental; the result is found by repeating an experiment. . experimental; the result is based on the number of

  2. Math

    For a scientific experiment, a physicist must make sure that the temperature of a metal does not get colder than −78 °C. The physicist changes the metal's temperature at a steady rate of −3 °C per hour. Let t represent

  3. Pre-Calc/Trig

    A body was found at 6 a.m. outdoors on a day when the temperature was 50oF. The medical examiner found the temperature of the body to be 66oF. What was the approximate time of death? Use Newton's law of cooling, with k = 0.1947.

  4. Microbes and Society

    The Forer Test of Personality that you took while reading this week's lecture notes appeared, at first glance, to offer insightful results. Later, you discovered that it actually displayed poor Answers: a. Divergent Validity b.

You can view more similar questions or ask a new question.