Multiplication and Division with Significant Zeros (1.5)

[Arenicolous]

Thanks. My teacher can't speak English so this helps a lot.

[md278]

Thanks so much m8!

[mggomes01]

wish my teacher taught as good...haha thanks alot

[wrinklebulhata1]

I wish you were my professor.....perfect explanations

[mloda012808]

Thank you, this is great!!!

[fancey250]

fucking love it .....more vids please

[nicanena07]

OMG you saved me from failing my chem test! YOU explain this soo much more simpler! THANKK YOU!

[xxxeurasiaxxx]

I can't thank you enough!

[nick42701]

My first 2 weeks of general chemistry, and our professor is still trying teach the class the concept of sigfigs and how to add/subtract, multiply and divide them, and you just taught me in 4 minutes. Maybe some of these college professors should take some pointers from you guys teaching these things on youtube. Once you grasp this concept, it's so simple. A lot of my professors have a tendency to over complicate them, making it hard to learn for everyone. Thank you for the videos.

[nicanena07]

@nick42701 im in the same scenario with my professor too! lol

[TheArhaam]

This video is a really good way of refreshing your memory and clarifying doubts when necessary!

thnx a lot bro! I appreciate it!

[SlowpokeBrock]

thanks. midterms not lookin so bad anymore

[lalala123ful]

What if you multiply a decimal number like 61.897 and an infinite number like 2 dozen? How would you multiply it? which number do you look at for the significant figures?

[gospelgirl1964]

I have a really good chem teacher. But now it's finals and I need to brush up or clearify on the things I got wrong. This video is available all the time....where the teacher is not. Thanks.

[icecreamlover48]

this man saved my chemistry grade

[raquelmusic36]

you actually saved my chemistry grade, thanks (:

[mahis83]

I TRULY WISH YOU WERE MY ECOR PROFESSOR!!

[TradeMark936]

dude, my school needs to hire you , seriously if you need a job, all of them are available cuz none of them can freaking teach.

[AB0094]

Thanks a lot,, i wish if you were my chem. teacher :))

[braydenbeautiful]

Thank you; you're awesome.



[MegaCardPro]

this man is my hero

[farkar78]

we should just watch these videos in class so we are more entertained, the teacher has to do less, and we get the best instructors in the world to teach it to us combined with visual effects to enhance the learning

[GameMasterKyoji]

Test 1 = 27%

Test 2 after video's on sig figs = 96% :D THANKS TO MUCH

[kiwiassassian925]

zeroes and all other digits that follow a decimal point are considered significant

[SingingGirl900]

I GET IT NOW! I have a quiz tomorrow so I'll message u on youtube here and let you know how i did! THANK YOU SO MUCH

[rafaeldelaflor]

Should the answer always be exactly the same when you convert to scientific notation before solving for the solution and converting to scientific after you find your solution?

[tazzenders]

YOU SAVED MY LIFE. NOW I'LL ACE THE QUIZ!

[webo511]

@tazzenders so how'd ya do



[tazzenders]

@webo511 i lived to see another day. :]

[Manosh0]

thx i understand this now

[KrsnaBhakta]

Thank you.

[MikeSw3nz]

you look like Hutch lol great vid btw

[kmnnh2010]

if i have 97.8 + 5.85 =

[danielladilly]

i think you forgot a rule, when you only round the number if its greater than 5 howevr if the front number is an even number you dont round you leave it the same

if it was an odd one then you would round it

eg

7.85

since 8 is even we just leave it the same cuse it even

so answer would be 7.8 not 7.9

[tdewitt451]

@danielladilly no, i intentionally left that rule out because i hate it, and it's mathematically incorrect. i know that some teachers like to use it, but it was designed for accounting (like rounding numbers in a bank account), NOT for scientific measurements. so if you already know the rule, great! but i'm not trying to teach it here.

[Kinin4]

No echo. :)

Great Vid! It really tied my present knowledge up nicely; I've finally figured out what SIg Figs are FOR. xD

[love4noreason]

for the last problem

0.03010 x 5030 = 151.403

can the answer also be 151. (a 151 with a decimal at the end)?

[tdewitt451]

@love4noreason usually you only put a decimal place for a number that has zeros at the end, like 230. or 4500. to show that those zeros are significant. if you have 151, since there aren't any zeros, you know that all three digits are significant. but if the answer were 150, and you wanted to show that all three digits (including the zero) were significant, then you'd put the decimal at the end. does that make sense?

[cruzlc875]

@tdewitt451 That kind of made sense but my chemistry professor is EXTREMELY picky. Like when we do conversion factors and dimensional analysis; she always makes us put "1.0 ml" instead of "1 ml" So, we apply significant figures and exponential notation to our final answer. Do you get what I mean?!?

[yeedust]

Great video tanx

[gooz121]

that was greaaaaaat thank you 100000000000000000000000 times

[mingto10]

tytytyty

[namelocj1]

How do I get to the Video Chemistry Textbook.com web site that appears in the window to the right? When I try i get a Go Daddy web site.

[x69Crunchyx]

I wish you were my teacher. I hope you get paid good for your teaching.

[blasinator17]

You, my good man, are a great teacher. Major help :D