Unit Conversion Using Dimensional Analysis Tutorial (Factor Label Method) | Crash Chemistry Academy
step by step how to set up dimensional analysis calculations, explained from a single to multi-step calculations for unit conversion problems.
-More on Dimensional Analysis | Wiki -
"In engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their fundamental dimensions (such as length, mass, time, and electric charge) and units of measure (such as miles vs. kilometers, or pounds vs. kilograms vs. grams) and tracking these dimensions as calculations or comparisons are performed. Converting from one dimensional unit to another is often somewhat complex. Dimensional analysis, or more specifically the factor-label method, also known as the unit-factor method, is a widely used technique for such conversions using the rules of algebra.[1][2][3]
The concept of physical dimension was introduced by Joseph Fourier in 1822.[4] Physical quantities that are commensurable have the same dimension; if they have different dimensions, they are incommensurable. For example, it is meaningless to ask whether a kilogram is less, the same, or more than an hour.
Any physically meaningful equation (and likewise any inequality and inequation) will have the same dimensions on the left and right sides, a property known as "dimensional homogeneity". Checking this is a common application of dimensional analysis. Dimensional analysis is also routinely used as a check on the plausibility of derived equations and computations. It is generally used to categorize types of physical quantities and units based on their relationship to or dependence on other units."
Wikipedia contributors. "Dimensional analysis." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 15 Jun. 2016. Web. 2 Jul. 2016.
Пікірлер: 54
literally sitting in my chemistry class watching this and taking better notes than my teacher has ever given me 🙄thank you!!
@fusionkinggamer9039
Жыл бұрын
Same
@janjan8716
11 ай бұрын
fr same!
I have been rewatching the last ten seconds of this video over and over again for the last hour violently sobbing trying to understand what you are talking about.
Thank you for your clear concise explanations, they are a true help!
very clear, flowed right into long term memory!
Another good one. Thanks so much for your videos. Extremely helpful
I thought you can’t cross over two different dimension/units but this gave me a new idea. Thanks.
Absolutely helpful and taught so simply compared to my textbook. Thank you so much!!
AWESOME VIDEO!!!!! Hit the spot. Now it makes sense!! YAY!!!
gREAT Intro to conversions!! Thanks so much.
Thank you so much. This has been a very helpful video!
Thank you for this video!!!! it was very helpful!
thank you!!!!! this makes a lot of sense
An amazing explanation 👏 I just reduced about 5 pages of notes to 1 ☺
Thankyou!! It helped me a lot.
Bro my teacher explained it way to fast and i did not understand and it took me littraly 3 mins to finnaly understand from you thank you
Thank you for posting, this video is great! I am recommending it to my math students if they need more help. I love that this is a chemistry video; I always tell them that math and science are BFFs!
@CrashChemistryAcademy
6 жыл бұрын
Thanks! It is comments from teachers that are the most gratifying!
@xavierjankewicz3589
5 жыл бұрын
Walter
@zelmayjan1267
3 жыл бұрын
@@xavierjankewicz3589 ferferferf
very helpful thank you very very very much :)
Good video. Keep it up
Thank you! This made it click. I can always get the answer but never by writing it the way they do for chemistry. I have no idea why that is. 🤷♀️
@CrashChemistryAcademy
2 жыл бұрын
You're very welcome!
Keep it up blood appreciate you
Many thanks
Thanks!!😁
I don't understand how you got 0.013 L at the end though, what numbers did you multiply or divide to get it?
@CrashChemistryAcademy
3 жыл бұрын
The math is 250/(19.3 x 1000)
Thank you sooooo much!
@CrashChemistryAcademy
Жыл бұрын
You're welcome!
This is my class now
@CrashChemistryAcademy
3 жыл бұрын
😊
when your chemistry teacher doesnt feel like teaching so she uses other peoples work to do it for her.
How did you get the answer 1290 for the second problem, I couldn’t get that , and I followed your steps
@CrashChemistryAcademy
2 жыл бұрын
at 6:37 the math setup is given (in green): multiply all top numbers, 0.0520 x60 x 60 x 100, and then divide by all numbers on bottom, in this case just 14.5 since the two 1's can be ignored. you get 1291, which I rounded to 1290.
@reneerodriguez1745
Жыл бұрын
@@CrashChemistryAcademy thank you!
@CrashChemistryAcademy
Жыл бұрын
@@reneerodriguez1745 You're welcome!
@6:16 heyy isn't the answer 1291.0 meters?please lmk bc ik not getting the answer u have .I think u made and error
@CrashChemistryAcademy
10 ай бұрын
1291.0 is the calculator answer. I rounded to 1290 to adhere to significant figure rules. If you want to learn more about the rules of significant figures, please watch this video: kzread.info/dash/bejne/h6GVx5Whf9bNhsY.html. If this were a test or HW question and sig figs were required, then 1291.0 would be considered incorrect.
perfect thanks
@CrashChemistryAcademy
2 жыл бұрын
😊
Look behind you Roy
Anyone else here for Stumpf, Pine View?
@davidg5280
4 жыл бұрын
I'm David, who are you?
@howdy8301
4 жыл бұрын
@@davidg5280 Ryan
@howdy8301
4 жыл бұрын
in your spanish class
@Luka-ln2hj
4 жыл бұрын
Hello It's fricking Luka
@howdy8301
4 жыл бұрын
@@Luka-ln2hj lmao
But where are dimensions involved?
@CrashChemistryAcademy
2 жыл бұрын
If you mean dimensions the way it is defined in physics (connecting derived units to fundamental units) or dimensions of space, both indicate that "dimensional analysis" is NOT a good name for this type of exercise. I agree with you, it should be called something else, but this is what it is commonly called in chemistry.
@fatimalearns9618
2 жыл бұрын
@@CrashChemistryAcademy Yes Sir I meant the physics dimensional analysis not the chemistry ⚗️ one.. but thanks alot for a quick and simple answer to my question🥰
@joelweiner5877
2 жыл бұрын
@@fatimalearns9618 🙂