Zegions
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| Joined: 25 Jul 2013 |
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| 24 Aug 2013 03:53 PM |
I have to make up a hypothesis and experiment for this question, so that it's a testable, valid experiment:
"How do the volume lines of beakers and erlenmeyer flasks affect the reliability of a lab experiment?"
I just want someone to come up with an if-then hypothesis, and a basic idea of how I'd go about doing the experiment.
My problem is that I cannot figure out what the independent variable would be, and like how it would make sense having water being the independent variable for example and then expecting a change in the amount of water having any effect on the measurements on beakers and erlenmeyer flasks.
Oh, and beakers and erlenmeyer flasks are basically just like glassware that you use to measure liquids.
will pay R$1K
ot: clan |
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Kellapod
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| Joined: 22 Mar 2012 |
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| 24 Aug 2013 03:53 PM |
yeah..no
- [BWE] Colonel Kelly :] |
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che46
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C0D3Y
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| Joined: 24 Jul 2010 |
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| 24 Aug 2013 03:54 PM |
| If the lines are in the wrong place Then the measurements will be wrong, therefore invalidating your experiment. No idea how you're going to test that though. |
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Zegions
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| Joined: 25 Jul 2013 |
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| 24 Aug 2013 03:54 PM |
ya so all u have to do is make a hypothesis, because it makes absolutely no sense to me having water as an independent variable and expecting a change in measurement
easy peasy will pay 1K |
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Zegions
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| 24 Aug 2013 03:57 PM |
| ya ikr it's the worse research question for experiment ever |
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| 24 Aug 2013 03:58 PM |
swag
enter
10/10
(ง'̀-'́)ง com fite me |
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93599
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| 24 Aug 2013 03:58 PM |
| All glasses used would have to have the same width to ensure that the volume lines on the side are accurate. |
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Allocated
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| 24 Aug 2013 03:59 PM |
um
I'm considered a genius in school, but I can't help you here |
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iKeno
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| 24 Aug 2013 04:04 PM |
| isn't this obvious, if your volume lines are messed up then you'd be taking all the wrong scores of the volume, thus ruining the reliability of the experiment because of inaccuracy of the data, making all of the data worthless. |
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Zegions
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| 24 Aug 2013 04:05 PM |
yes but it needs to be an experiment
idk how i would make a valid test, hypothesis, etc. |
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iKeno
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| 24 Aug 2013 04:06 PM |
| pretty sure the independent variable would be the having the lines in the wrong places, because it's independent. |
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Zegions
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| Joined: 25 Jul 2013 |
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| 24 Aug 2013 04:13 PM |
ugh but it needs to be testable bcuz i'll actually be doing the experiment, and changing where the lines are is pretty much impossible
see, i was thinking about using:
"I predict that if I change the amount of water in beakers and erlenmeyer flasks, the measurement will be off by an average of 3 mL."
but idk in a way it doesn't make sense |
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corfish67
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| 24 Aug 2013 04:30 PM |
I'm not going to take 1000 robux, nor will I give you a full report. I'll answer a few questions:
An independent variable is a variable that does not depend nor rely on another variable.
For example if you were to question the reliability of the volume lines of either liquid containing mechanisms, respectively those two flasks you mentioned, you would need to make sure they are both using the same units of measurement. The way you're able to deduce this is simply measuring the the width of either container, and later in the analysis section of the report mention if they are capable of holding the same amount of liquid.
This lab is a bit foolish because it seems it's only asking reliability you aren't going to have to worry to much. Here is something I'd use for a hypothesis:
If I pour 500 ml of water into a glass beaker marked only up to 800 ml, and I poured another 500 ml of water into a Erlenmeyer flask, than neither of these two beakers should contain more or less than 500 ml of water after I have poured it.
This hypothesis is the first thing that came into my mind, mind you it is a little long and it's is probably not 100% correct. You have not provided enough information for me to actually give a great answer. But from the looks of this experiment it's really easy. All you have to do is devise an experiment involving 500ml of water (or more or less based on what YOU want to experiment) . The experiment will than be done (make sure to mention ALL materials and variables and be very specific in how they are to be used/functioned such as labeling cups or something). Once you've finished the experiment take the data and be ready to write a report.
I suggest creating an experiment that shows no matter what 100% of the time if you pour 500ml of water from a beaker, and if you pour 500ml of water from a Erlenmeyer flask, there will always be 500 ml of water. The beakers do NOT effect the outcome of the experiment. You should also mention that if however another variable such as fire was added to each of the beakers, that because of the shape of the beakers one may be able to contain heat/heat up faster than the other.
That right there is the outline of your experiment. I tried to be as vague as possible in hopes you can show some creativity within this experiment.
tl;dr : There is no tl;dr OP, read the stuff I gave you. Have fun, and you're welcome.
Remember, the reliability of the experiment is high because 500 ml of water is always 500 ml of water.
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corfish67
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| 24 Aug 2013 04:33 PM |
FIX ON MY POST FOR THE HYPOTHESIS PART:
When I mentioned Erlenmeyer flask I didn't mention how high the ml mark should be, it should be both marked only up to 800 ml.
Although you can change 500 ml and 800 ml to whatever you want, just make sure to mention it like so:
A;B A;B
A = 500ml B = 800ml |
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corfish67
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| 24 Aug 2013 04:34 PM |
| LOL I see so many posts saying that you should test to see if it ISN'T reliable, when showing it IS reliable is faster and to be honest the best way. You can't test for unreliability, because that defeats the point of an experiment. Experiments are supposed to be reliable. |
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corfish67
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| 24 Aug 2013 04:36 PM |
Where is OP, I want to see whether or not I made sense in my post.
GAAAAH
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| 24 Aug 2013 04:36 PM |
stop doing his homework, cor!!
~Echo Echo Echo Echo~ |
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corfish67
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| 24 Aug 2013 04:37 PM |
| NO. I WILL DO HIS HOMEWORK IF I WANT TO. |
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| 24 Aug 2013 04:37 PM |
dude this is so easy it's a simple precision v accuracy experiment every school does this stuff
10th grade pre-AP chem I assume? |
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corfish67
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Altair55
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| 24 Aug 2013 04:39 PM |
Hypothesis: If the lines on a beaker, or an Erlenmeyer flask, are incorrectly or inconsistently marked, then the experiment will receive inaccurate results.
Experiment: Take (amount of water) in one beaker or Erlenmeyer flask, and pour it into another beaker or Erlenmeyer flask with different markings or markings with inconsistent quality.
idk about experiment be creative on ur own for that 1 |
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Zegions
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| Joined: 25 Jul 2013 |
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| 24 Aug 2013 04:40 PM |
Actually pre-IB, but yeah pretty much @once.
Okay, so it all makes sense. However, there's one thing. The data tables have to reflect the independent and dependent variables. So in the hypothesis you gave, would there be a changing in the independent variable? Because if you're just adding the same mL of water for all 3 trials.. |
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