really appreciate how you teach and start from the very beginning and on. My chem teach expected us to already understand prefixes and such and not explain how the conversions are placed. This really helped me, keep up the good work.
I agree with you Ashley. I wish all teachers will explain lessons like this guy. I will never stop learning if they would. Some times what makes me delay to study is that majority of teachers don't explain things in a easy way. Therefore many students struggle a lot specially those whose English is not their first language. But God sents us an angel like this guy. I am happy to found his videos.
Hello, z3nkin. The most common mistake on these types of problems is not using your calculator properly. You will want to use the exponent key (typically EE or EXP) and be sure you enter it as 7.624E3 x E-2 / E6. Alternatively, you can do it the long way as 7.624x10^3 x 10^-2 / 10^6.
I can't thank you enough for this video I was 2 weeks in and had a difficult time doing this it was hard for me to take a junior class as a sophomore and now thanks to this video I feel more confident doing the problems I can't thank you enough all I can do is like comment and sub so thank you
I spent days trying to find a video that made it easier on me and this was the first one I understood completely. the prefix and the exponents were what made me confused. thank you so much 😆
In the States we refer to 1,000 kg (1 Mg) as a metric ton. And in most daily situations you wouldn't use Mm, but there are times in scientific measurements where you need really huge distances so Mm, Gm, Tm, etc. are all feasible. Thanks for the feedback!
If you multiply 7.246^3 * 10^-2 / 10^6 = 0.000076 Then just move the decimal place to the right 5 spots which will give you -5 as your power. If you need further detail, look up a "significant figures" video and that should explain everything you need.
OMG!!! You're awesome, thank you , thank you, thank you for the great explanation!! I wish you were my chem teacher!!! I finally understand this conversion now!!!
Thank you this helped a lot. My only question is how did you get -5 as the exponent for the final example? What is the process of reaching that -5? thank you, Jessica
Thank you so much Mr.GetChemistryHelp. Your explanations are very clear and easy to follow. I learned from your videos more than I learned in class. Just one question: How did you get 105at the end? Thanks again may God bless you.
By 105 do you mean 10^-5? (10 to the -5 power) If so, you have to make sure you are using your exponent key (it should look something like EE or EXP) and that you entering it in to your calculator properly. Typically, you'd enter in that problem like: 7.624EE3 x 1EE-2 / 1EE6. Does that help?
I'm Danish, so I'm quite used to the metric system, but it's a very good explanation. :) While the video is correct, there's a few things I would add though. 1,000 kilograms = Mg (Megagram), but no one really uses Mg (Perhaps scientists perhaps.) We generally call it a ton (Tonne). I'm not sure why, but perhaps due to Mg being so similar to mg (miligram). For distances, we rarely use anything above Kilometer. I've never heard Megameter used at all. It's just 1000 km in daily usage. :)
To me it's kind of amazing that you have to explain the metric system :) I really dont understand why the U.S does not use it. Also, in sweden we have a word for 10 kilometer. 10 km = 1 mil.
I was actually just in Sweden last week and learned about the mil! I guess we Americans are just set in our ways and don't like to learn new things, that's why we expect everyone else to learn English. ;)
I do plan on adding content eventually, but between my regular full-time job, family, and other commitments there simply hasn't been enough time. But please subscribe to my channel so you can be notified once I finally do!
Hello Melissa! You can find a list of the hardware and software that I use to record my videos at www.GetChemistryHelp.com/Resources. Let me know if you have any further questions!
big problem i have, where the hell did yo get the 10 to the power of negative 5 from in the last example at the end? It throws out any understanding i once had :(
Most likely, you're using your calculator incorrectly. Be sure to use the exponent key which should look like EE or EXP and enter the calculation as 7.624E3 x 1E-2 / 1E6. Hope that helps!
I've been out of school FOREVER! Continuing my education and have to take chemistry. Can someone please tell me how he got 10 -5 for the exponent in the end?
I suspect your problem lies with how you enter the scientific exponents in your calculator. Please ensure you are using the actual exponent key and not simply "ten ^". The exponent key should look something like EE or EXP on your calculator. So you would type the calculation in as 7.624EE3 x 1EE-2 / 1EE6. If you type it in without using the exponent key, such as 7.624x10^3 x 1x10^-2 / 1x10^6, you will get the wrong answer.
you asked the perfect question. I have searched everywhere on youtube, and yet to have found someone that works the very ending out instead of punching it in the calculator which leaves me soo lost.
Isa DC BityKfemcee If you're using 10^exponents then the best method is to add or subtract the exponents based on where they are located in the calculation. Those on top (in the numerator) are added while those on the bottom (denominator) are subtracted. For example, in the video we did 7.624x10^3 x 10^-2 / 10^6. The answer will be 7.624x10^ (3 + -2 - 6) = 7.624x10^-5. Hope that makes sense!
For the second problem around 9:06 , why did you put 10^-2m / 1cm? Why didn't you put "10^2cm" on the bottom? I thought you put the "1" infront of the prefix that is bigger than the other? which I thought would be m is bigger than centimeters?
The way I teach metric prefixes is to associate each prefix with it's exponent. Then in conversion factors the exponent is always on the OPPOSITE side of the prefix. For example, 1 km = 10^3 m; 1 mL = 10^-3 L; 1 cm = 10^-2 m. When deciding how to set up the conversion factor, you put match the unit you're converting with the unit you place in the denominator (bottom). For example, since the second problem was converting cm, we put cm on the bottom. Centi (c) means 10^-2 so that always goes OPPOSITE of the prefix. In other words, centi (c) and 10^-2 can NEVER be on the same side of the conversion factor. If centi is on top, 10^-2 is on bottom. If centi is on bottom, 10^-2 is on top. Hope that helps!
