Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/2SrDulJ

@reconnaissance7372

4 жыл бұрын

Pin the answer to the limestone question! :P

*An aspiring chemist watching crash course* ”chemist die younger than the average person” *re-thinks life*

@blanczeng5475

4 жыл бұрын

actually tho

@asterism_s

4 жыл бұрын

that was me

There used to be a DJ called DJ Titrate. He always loved to drop the base (into acids).

@moviedetailscool6378

9 жыл бұрын

LOL

@AphoticNZ

6 жыл бұрын

Sounds salty

@erinmayo5170

4 жыл бұрын

But did he drop acid?

Now, every time I drop soap in the shower, I am going to that I "dropped the base".

@jaimeparker2161

6 жыл бұрын

Shame on you.

@aakashkrishna5933

6 жыл бұрын

Lol

@FardinKhan-nk5ep

5 жыл бұрын

**HEARS HIMSELF SINGING ALL ABOUT THE BASS EXCEPT ITS NOW BASE**

@ashdavid5337

5 жыл бұрын

Just don't do it in prison ;)

@ximenam.9236

5 жыл бұрын

@@ashdavid5337 LMAO I was about to say that. I'm glad I wasn't the only one who thought of that

Funny chemistry story (actually, not really, lab safety ain't no joke kids...): I once had my shirt disintegrated off me. A classmate walked right behind me and I didn't know he was there and I bumped into him. I don't remember the concentration, but unfortunately for me he was carrying a tray with phosphoric acid. It wasn't life threatening but about an hour later while riding the bus home, I was feeling a little itchy on my shoulder where the acid spilled on me. I reached back to scratch it and my shirt just started...well...disintegrating at the touch. I lost the whole upper right side of my shirt. Confused the hell out of the bus driver, who noticed my current state of attire as I was exiting the bus, before she could ask I said, "Don't worry, I just had acid spilled on me in chemistry." I then proceeded to take long and thorough shower as soon as I got home.

@shawnnoyes2776

5 жыл бұрын

A 'friend of a friend' being funny in class when lab safety was being covered - you know: "don't inhale directly, just waft it towards you", was being a typical asshat and while repeating something to the effect of "ahh, the wafting sensation" was a little too vigorous, and waved too hard, or inhaled too deeply, but definitely knocked himself out. He made a full recovery, and the rest of my High School life was filled with a "enjoy the wafting sensation" joke whenever someone passed gas in that group of friends. As teenage boys, you can image, it was often. Incidentally, we did *not* in fact enjoy it, at all. -Shawn

I learned more from this 11 minute video than I did the past month in school

@aramalbarzngi9769

7 жыл бұрын

I literally just told a friend of mine "I learned more in 20 minutes on this channel than 1 month in school". High five!

@yasminebear2828

7 жыл бұрын

タイトル何て自分で考えなさいな Same here !!!!!

@kirigirikyouko4875

7 жыл бұрын

same here

@ramen2424

6 жыл бұрын

past year'

@gmansplit

6 жыл бұрын

You must have some shitty teachers? You were probably just zoning out in class.

The worst thing that could happen is having a bad teacher. -cough- -cough- -cough- you know who you are bad chem teachers

@Carlomanden

10 жыл бұрын

Walter White?

@300PIVOTMASTER

10 жыл бұрын

Free Toothpaste Too soon, free toothpaste, too soon.

@doraaaa0613

9 жыл бұрын

I'm lucky enough to have a great one. They're quite rare. ..Except I'm missing a shit ton of school because I'm sick and Hank's a great teacher too. :D

@myhops

7 жыл бұрын

Walter White is the best chemistry teacher ever. One of his students even became a millionaire with him!

@abigailjones2023

7 жыл бұрын

Yeah...my chem teacher is like "Here is a worksheet with some notes...sorta...figure out this whole unit, I'm not going to explain anything.....here is your test. 20 questions...oh, why did all of you fail?"

Crash Course is undoubtedly the best educational channel on KZread. However, it would be great if more topics could be incorporated by adding more series, like physics, math, and a series specifically on DNA or something. I really appreciate what you guys do, so thank you! #CrashCourse

@davidfeng6120

8 жыл бұрын

+CrashCourse

@EvilSandwich

8 жыл бұрын

+David Feng Crash Course Physics started a few days ago and it is awesome. :D

@bradymasur4944

8 жыл бұрын

David, the boseman science channel has some really good videos on DNA and other grade 12 biology topics

@frapocappochino

8 жыл бұрын

watch Kahnkademy it helps me a lot, these two channels xD

@flyingsquirrels83

8 жыл бұрын

Well now there is psychology, philosophy, and I think they will only continue to expand their range of topics. Especially, as more students, and whatnot, discover their channel.

PLEASE CAN WE HAVE CRASH COURSE PHYSICS

@adithyaraghavan4338

8 жыл бұрын

+Thingonometry - yeah

@AlbinosaurusR3X

8 жыл бұрын

+Thingonometry - Yes, please!

@thivyaabaskaran989

8 жыл бұрын

+Thingonometry - Puhleassseeeee

@holtg007

8 жыл бұрын

+Thingonometry - would be totally cool if they got Brian Cox to host it

@josephng981

8 жыл бұрын

And also Geography PLEASE

Just to make sure I have this right as some of the calculations set out below seem incorrect: For 1 metric ton of coal containing 3% Sulphur the following applies: 30 Kg of Sulphur requires as calculated in the video: 30000 g of S / 32.065 = 935.59956 moles then as 1 mole of S reacts with 1 moles of CaCo3 = 935.59956 * 100.09 = 93644.159 g which is = 93.64 Kg of CaCo3 to fully neutralize it producing 112.431 Kg of CaSo3. Therefore you need ~ 3.12 Kg of CaCo3 to neutralize 1 Kg of Sulphur. Knowing this, the approximate answers would be as follows for 1x10^9 metric tons of coal: The amount of Sulphur produced from 1 metric ton of coal = 30 Kg * 1 billion = 3.0x10^10 Kg of S produced. The amount of CaCo3 needed for 1 metric ton of coal = 93.64 * 1 billion = 9.364x10^10 Kg of CaCo3 needed (which is 3.121 times the amount of Sulphur produced). Finally the amount of CaSo3 produced from 30 Kg of Sulphur reacting with 93.64 Kg of CaCo3 = 112.431 * 1 billion = 1.12431x10^11 Kg of CaSo3 produced. RFM for Sulphur = 32.065 g RFM for CaCo3 = 100.09 g RFM for CaSo3 = 120.17 g Good luck to all!

The first 13 seconds pretty much sum up my life

@kylasomerville172

9 жыл бұрын

Sames

@humixmusic4lyf

9 жыл бұрын

haven't got to the last part ... yet. :')

@sarahmacauley6294

6 жыл бұрын

lol sameee

@btdpro752

6 жыл бұрын

ze62948 how do you fail chemistry?

@annapicklecabbage

5 жыл бұрын

It's a hard concept to grasp.

Hank is out of his office!? What!?!?!? Mind. Blown.

@sarahmacauley6294

6 жыл бұрын

crazy right

When you need to watch crash course on 1.5x speed because of test in 7 minutes...

@pianosRepic

8 жыл бұрын

+Frederick Schulze Haha xD got high school exams in 2 days, need to learn all subjects from scratch since I don't go to school... French will kill me, don't speak a word of it and need to be near-native in 6 days :c

@finnbreuner3618

8 жыл бұрын

+pianosRepic wow you are FUCKED but as a pretty good french student if you learn how to conjugate into the past and future tenses that should get you pretty far as a speaker

@pianosRepic

8 жыл бұрын

sounds like a strategy :P thanks

@sexualchocolate1498

8 жыл бұрын

+pianosRepic You're taking a school exam but don't go to school...hmm. My bullshit-o-meter is going of the scale

@pianosRepic

8 жыл бұрын

+Sexual Chocolate exams are state regulated in the Netherlands, you can just sign up, pay 500 euro's or so and take the exams, even if you are a homeless dude or a couch potatoe like yours truly

Dear Hank, Please can we have some "Chemistry, Causing problems ... But also fixing them" Tee shirts, they would kick so much ass

@abhisheksubramanian1613

9 жыл бұрын

dear hank, how abut chemistry in technology? anyone?

@stocktonjoans

8 жыл бұрын

O.K. so if Vlog Bros Inc won't make them, would taking an excerpt of dialogue and transcribing it to a T-shirt count as fair use?

@mrpkmnfrk

8 жыл бұрын

+ben middleton ya they didnt copyright that exact line so go ahead sell them urself

@stocktonjoans

8 жыл бұрын

mrpkmnfrk sod selling them, I just wanted one for myself, although...

@RonShenkar

7 жыл бұрын

"Causing problems... but also providing solutions"?

I'll never get enough of Crash Course. . .every review is perfectly wittingly constructed and presented.

Soap is a base. People say "Drop the base" Does this mean drop the soap? This world is evil.

The Jimmy Hendrix reference for Strong Acids and Acid Jazz for Weak Acids was excellent Thought Bubble; thank you for being amazing.

@krautgazer

8 жыл бұрын

+Neurotransmission I agree. Jimi Hendrix and acid rock (and, you know, THAT acid as well) as strong acid, a weak bass player as weak base, deadmau5 as strong bass and acid jazz as weak acid was a pretty huge combo, hahaha. Good work, Thought Bubble!

You're like the Bill Nye for adults. So informative and you make it easy to understand. Thank you!

@cindywang9194

9 жыл бұрын

***** I'm going to be a freshman

@somvirdabas1434

8 жыл бұрын

o really.......

@somvirdabas1434

8 жыл бұрын

o really.......

@atomicninja4847

8 жыл бұрын

+arielartista and better.He is not evangelist atheist

@AlbinosaurusR3X

8 жыл бұрын

+Atomic Ninja Neither is Bill Nye. Evangelism's definition specifically refers to conversion to Christianity. Bill Nye is not telling people to be atheist or agnostic, but is merely anti-religion. And rightly so.

I love the way that Chemistry is handled in these videos. It makes Chemistry seem like a fun, easy to understand science, as opposed to an impossibly difficult science that a lot of media portrays it to be. That, and these videos are extremely helpful for brushing up on material learned in the classroom.

I really wish i could have seen this channel back in high school when my chemistry teachers sucked and made me hated the subject. You make chemistry much more of fun than boring equations, man!

Chemistry, the cause and solution to all our problems.

Surprisingly the Fine Bros haven't taken this video down

@Alexandruwwwww

8 жыл бұрын

+someboredinsaneasian banter

@bigmax5780

8 жыл бұрын

Why would they?

@someboredinsaneasian

8 жыл бұрын

the word "reactions"

@bigmax5780

8 жыл бұрын

someboredinsaneasian ohhhhhhhhhhhhhhhh

@Nicoder6884

8 жыл бұрын

What are the fine bros?

"now, you may be wondering: 'who's been coming by, and throwing sulfuric acid on STATUES?'" it has been five minutes and i'm still laughing :D

Hank, I can never thank you enough for those crash courses! After a semester without chemistry, I definitely needed to freshen up my knowledge to be able to follow my "Industrial applications of chemistry" class in college. Thank you (and the whole team) so much! :D

So, an acid is like two parents setting their child up for adoption, while a base is like the orphanage taking the child in. Just saying.

@lordilluminati5836

7 жыл бұрын

a bit Grimm analogy, but usefull

@tou7331

7 жыл бұрын

JACOB SARTOURIOUS

@vladtheimpaler9577

7 жыл бұрын

Yeah,but strong acids don't wait for a family to come,they just break down someones doar and frow the kid in the house,while a strong base breaks into your house and steels the baby.

@cc_isgreat671

7 жыл бұрын

yeah that's one type

@ojk20000

7 жыл бұрын

Vlad the Impaler were u inspired by "Dracula untold" fr ur name?

Yeah, I think I'm gonna stick to studying physics and math, seems like I'm at lower chance of, well, dying if I choose that instead

@panzerwafflez7228

7 жыл бұрын

You might bleed to death in math due to a paper cut or die in a physical moment(ex:rockets and carcrashes) in physics.

@Umirua

7 жыл бұрын

Andy Su Well, one paper cut is surely not gonna cut it, no pun intended. And come on, if I stay by the drawing table I'm definently gonna be safe from all that other stuff

@pewnit

7 жыл бұрын

Also, a cat might come and scratch you up... if it survives the nuclear bunker, that is...

@Umirua

7 жыл бұрын

Punit Daga Now why would I have a cat?

@pewnit

7 жыл бұрын

Schrodinger's cat?

Hank and Crash Course team, thank you so much for making chemistry much more interesting, keeping me awake and making me feel motivated with your informative lectures, jokes and illustrations. I am grateful that someone is able to break concepts down for me so I don't fail my Chem 2 class. You never disappoint!(:

oh the metric/SI units... feels so good...

Excellent episode. But just wanted to mention that the final definition mentioned in this episode for Acids and Bases is the Bronsted-Lowry definition. The more accepted and universal definition is Lewis Acids and Bases which covers a broader part of chemistry that undergo similar reactions.

9.36 x 10^7 metric tonnes of CaCO3

A few years ago, a group of my friends and I had to do a project about a problem in the world and we did it about acid rain in Africa and talked about adding limestone to rain water to make it better for drinking. Now I finally understand the chemistry!

you remind me of Bill Nye. my goal is to be like you guys eventually!

@GnosticSeeker369

7 жыл бұрын

Jenefer Motta I hope you reach your goals 🤙🤙

am i the only one not watching this for a test?

@jacklynyeh4893

9 жыл бұрын

I am as well! I find this fascinating.

@preztaco4022

9 жыл бұрын

im watching it for a projects does that count?

@XPimKossibleX

9 жыл бұрын

Prez Taco well, it isnt for your enjoyment.

@reemiipz

9 жыл бұрын

hah, never :P

@TheGentlemanZombie

9 жыл бұрын

I graduated years ago . I just like watching crash course.

Last-minute cramming for the AP exam...anyone else?!

@zacharyjohnson9911

9 жыл бұрын

Mine is today, maybe we're taking the same exam.

@doraaaa0613

8 жыл бұрын

Oh hey, how did you guys do? I'm doing an overnight Crash Course Chem marathon for my semester exam tomorrow. I have a different schedule that conflicts with school (leading up to my finals, I go at a different pace), and even though semester exams are internal, if I get an F tomorrow (or anything below a B, actually) my Chemistry teacher is going to seethe. So basically.. I'm doomed.

@zacharyjohnson9911

8 жыл бұрын

***** Guessed on a third of the questions. Everybody did bad so we go a curve.

@ToxisLT

8 жыл бұрын

+Yoshi's VGM just curious, how did it went, did watching CCC helped?

@Michael-ur4gd

8 жыл бұрын

Of course another AP kid announcing to the world that yes in fact he is in AP

gosh I wish these videos were around last year when I took AP Chem. my teacher was totally incapable of connecting with my learning style no matter how many times I asked for help, and I came REAL close to failing. I feel like I understand everything so much better now... it makes my life so much easier...or it would have, if I was still taking chem, haha. I guess I just have to find a way to incorporate more chemistry into my life...

6:23 I didn't know Deadmau5 had a strong base. His attitude gives me acids.

@pewnit

7 жыл бұрын

wait wait wait... slow down... I don't get it.

@pewnit

7 жыл бұрын

He is that DJ with the mouse hat...

@doncarloancelotti2256

7 жыл бұрын

Punit Daga And do you know his attitude in Twitter and public?

@pewnit

7 жыл бұрын

Jefferson Moordenaar Nope... never researched... I'm so frustrated with keeping up with all news and things online that it has come to a point where I need to know about literally everything and everyone regardless whether I do or don't care about them...

@doncarloancelotti2256

7 жыл бұрын

Punit Daga Nah this is nothing like that, Ik what you mean. Just look up on Joel's Twitter feuds and you would know.

Woah is that DeadMau5? I LOVE THIS EVEN MORE

@izzycahill

10 жыл бұрын

Derpy :)

Dear Mr. Hank Green, you are a legend. Thank you for this video!!

Anyone else catch George and Lucille at 5:34?

About 93,551.4 tons of limestone needed- 9:50

The equation at 6:58 is unbalanced. put a 2 in front of SO_2 and H_2O

Honestly, Crash Course is the only reason why I haven't failed my college-level General Chemistry class xD

holy shit Hank Green; I've been paying attention to you for a minute, but you really seemed involved in this episode. What do we have to do to fully support you and your crew to a level as Bill Nye?

This man ate a lemon for our education! Much respect

The sulfur acid equation at 06:57 is not balanced: 02 + SO2 + H20 -> 2H2SO4 [BALANCES AT] O2 + 2H20 + 2SO2 -> 2H2SO4

@aaronwhitehead9273

5 жыл бұрын

Thanks. Wondered why my kg of CaCO3 was double of his value.

@camfre4k

4 жыл бұрын

I noticed that as well, but just thought I was stupid and missed something so I re watched the video 😂😂

The answer to the question in the video: Since a ton (1000kg) of coal produces 30kg of sulfur, a billion tons (1,000,000,000kg) would produce 30,000,000kg (30,000,000,000g) of sulfur. The molar mass for limestone (CaCO3) is 32.1 g/mol. 30,000,000,000 g ÷ 32.1 g/mol = 934,579,439.3 moles of sulfur. Since one mole of sulfur equals one mole of CaCO3 used, 934,579,439.3 moles of limestone is needed. The molar mass of CaCO3 is 100.1 g/mol. 934,579,439.3 mol × 100.1 g/mol = 9.36 × 10^10 g = 93,4441,401.87 kg of CaCO3 93.4 million kilograms (94 thousand tons) of limestone would be used. (sorry I didn't count the significant digits in my calculations. Pls correct me if I had a mistake. Also, after reading this, you may as well guess my age.)

@thequeenofswords7230

9 жыл бұрын

Thanks, I was looking for this comment. Intelligence is a poor thing to judge age based on, but based on the fact that you're asking I would hazard a guess at around 15. Also; what no Stoichiometetric equation?!? Just kidding. ^_^

@durugyakos1

9 жыл бұрын

Be careful with the powers of 10 when converting tons to kilogramms. A billion tons = 1,000,000,000 tons = 1,000,000,000,000 kg = 1,000,000,000,000,000 g (1000^5 or 10^15 grams), so 30,000,000 kg of sulfur that you calculated would be the amount produced by a million tons of coal. For a billion tons of coal approximately 93.6 billion kilograms (96 million tons) of limestone would be needed

@seancrockett4141

9 жыл бұрын

Reawaken :3 The molar mass for limestone is not 32.1g/mol... it's about 100.1 g/mol. Won't that change the final answer?

@seancrockett4141

9 жыл бұрын

Sean Crockett wait nevermind that's a typo on your part, you probably meant to say sulfur instead of limestone

@ericlaulofstedt541

9 жыл бұрын

Reawaken :3 dude you rock ahah

Crash course smoothed out biology; now it's pulling me through chem. Thanks guys! These videos are freakin awesome!

What a great Crash Course! I have wanted to see something like this for a very long time. I knew I was really interested in chemistry, but not all the details, and found it very hard to find any really great educational shows about it. Hank presents it better than I could have hoped for: it's fun to learn the material. Hank and John are my new heroes - seriously. This material and others like it to follow can completely democratize education. May everyone find out about it.

Whoever is reading this, I just want to say, have fun with your life and enjoy it as long as you live

@azark.973

6 жыл бұрын

rocke boy be careful, because Chemistry causes death.

@ximenam.9236

5 жыл бұрын

you just cured my depression from cramming too much

@animegirl17

4 жыл бұрын

I appreciate that...really, and you do the same.

About 93,551.4 tons of limestone would be needed.

@appletrader1

6 жыл бұрын

Please show work..

@807pranavghandade8

5 жыл бұрын

Nope, it's 94 million ton of limestone per billion ton of coal.

@807pranavghandade8

5 жыл бұрын

This is approx.

@samcurrin6401

5 жыл бұрын

@@807pranavghandade8 Damn

@infernalord1526

5 жыл бұрын

94.5 million tons taking sig figs into account.

love this guy, i never knew how much i could learn and laugh at the same time! TY Hank

Once again crash course teaches me more than 12 years of school in a 10 minute video filled with humour and practical examples :) Thanks guys

1:28 LMFAO that extreme close up of Captain John Mullan's face cracked me up. Hank, as always, thanks for being awesome.

Hank: ”chemist die younger than the average person” also Hank: A small price to pay for salvation

Can you guys please make a video for back titrations? Your videos always make more sense than all other KZread tutors :) as students you are our lifeline, and we really appreciate the work and research that goes into each lesson. Thank you!!

This series has been amazingly helpful! Thank you! I still suck at stoichiometry but that's probably because I haven't watched that video yet ;)

For myself and others who need to revise important concepts: 3:58

Dear Hank Green, Thank you so much for saving my university chemistry grade from impending doom.

Thanks, Hank! We love your show. I homeschool my kids and we have so much fun watching your videos as a supplement to our curriculum.

THANK YOU. After I watch this a couple more times I'm confident I will finally understand protonation. Maybe.

You are incorrect at 10:42. You stated that when a base donates a proton it forms a conjugate acid. Bases do not donate protons, but rather accept them. You should have stated that when a base accepts a proton, it forms a conjugate acid. Please fix this and thanks for the great video!

@CameronAkaClaw

6 жыл бұрын

I noticed that too.

@ritabos7162

5 жыл бұрын

Umm if you paid attention earlier at 4:02 he literally said that a base accepts a proton. So calm down.

The music bit was pretty well done.

I love the graphic for conjugal! Absolutely fantastic!

Amazingly unbiased, helpful and informative ! I'm subscribing.

I love your videos. Not to sound stupid, but at times you talk so fast, it can be hard to follow your concepts. I guess that is why there is a replay button. :) Please keep making videos!

@jaimeparker2161

6 жыл бұрын

You can’t understand him? Can you understand a New Yorker? We talk faster.

@tahasilat7394

6 жыл бұрын

you can press the settings button and adjust the speed to 0.75 which is much better

Its the anti-acid BASEically

I really respect this channel and those who works for it

5:16 on the right hand side... Thank you so much for this video!!! CrashCourse has saved me on soooo many tests...

loved the hendrix reference

Hank, could you please put up IGCSE level sciences for us GCSE students?

@fernandatan312

8 жыл бұрын

especially when its finals week oh my god

Hank Green you are a real bless for humanity. It's a pity I get to know your videos so late, but it's a bless that I know them at all

Using this to revise acids and bases is way more fun that any other revision I've done

gah. damn it, I don't know if it's me or what.But i think he's speaking too fast I love this channel and everything but...Gaaah. Gaaaah. I hope I can understand this soon.Exams are coming up.Damn it.

@kl16863

8 жыл бұрын

You can lower the speed if you are on desktop

@samcha1718

8 жыл бұрын

oh. okay ill try that out. gee, thanks!

@mdelucia28

8 жыл бұрын

+Yoshioka Futaba did you try captions?

@TheRok

8 жыл бұрын

+Yoshioka Futaba Yes, you can lower or increase speed on almost any computer or laptop. I actually watch this at 1.7x faster than normal, but if 1.0 is too fast for you, you can try 0.7x or even 0.5x. If you don't see the option on KZread automatically, try an excellent Chrome extension called Video Speed Contoller.

@nutanmaheshwari2653

6 жыл бұрын

You are a dosshbag

Crash Course Physics? Crash Course Government? Crash Course Statistics? Crash Course MCAT/ Anatomy and Physiology? please?

@leximcnoogut9776

9 жыл бұрын

***** 200 60mg Pseudophedrine HCL pills (Actifed, Sudafed, Suphedrine, etc.) 1 1/2 cups Ammonium Nitrate fertilizer (33-0-0) 3 cans starting fluid 3 AA Energizer Lithuim Batteries 1 bottle Red Devil brand Lye 2 caps of water (use the top off the 2 liter) 1 box Iodized Salt 1 bottle Liquid Fire brand drain opener now shake n bake.

@yumikoalida5570

4 жыл бұрын

They did it all! Omg

@asterism_s

4 жыл бұрын

all of those exsit

5:33 Really appreciate the Arrested Development reference. Also, these videos help immensely.

this really helped with my chemistry revision! Thanks!

Good video, except there was one error, At 10:43, it's supposed to be when a base accepts a proton it becomes a conjugate acid.

this channel make me love chemistry and physics...

@explainit1250

4 жыл бұрын

yep me too

Oh my god you really are amazing🙌🙌 how did you just explained me so easily about exactly all those things I was so😵😵 confused about for such long . Thanks seems a small word 😍😍

This has actually been helping me a lot.

3:01 hehe basically

this channel needs a math playlist.

@devloper_hs

4 жыл бұрын

True

this is really good and so are the rest of the videos helping me out soo much thank you

Hank at 3:24 CANT STOP LAUGhing!! This guy is legit!! Superrrrr

I got 320679320.679. Here's my process: 1) Find 3% of 1 billion, which is 30,000,000. 2) Find the amount of grams in 30,000,000 kilograms, which is 30,000,000,000. 3) Find the amount of sulfuric moles in 30,000,000,000 grams , which is 963,000,000,000. 4) Find how much Calcium Carbonate this translates to, as Calcium carbonate has a molar mass of 100.1, ANS = 9620379620.38 grams. 5) Reduce this number back to kilograms, which ends up being a tidy 9620379.62038 kilograms, or about 9620 metric tons.

@tricketts5355

7 жыл бұрын

Your method is correct but you made a mistake on step 1. Find 3% of 1 billion TONNES, not 1 billion. 1 billion tonnes = 10^15g 3% of 10^15g = 3x10^13g Number of S moles in 3x10^13g = 9.36x10^11 moles (might have different answer in this step depending one what value you have for sulfur's relative atomic mass). CaCO3 molar mass = 100.1g (100.1) x (9.36x10^11) = 9.37x10^10kg Convert kg to tonnes (divide by 1000) ~ 9.37x10^7 tonnes of limestone. But yeah otherwise well done. Just remember to check your SI units. :)

@ZewdPlays

7 жыл бұрын

God dammit the units strike again. Shoulda listened to Mrs. Brown when she said to keep the units written.

@iangolding8936

7 жыл бұрын

+Tom Ricketts Actually, your method of rounding may be flawed. As sulphur has an atomic mass of 32,065 or a molar mass of 32,065 moles, you get the value of there being 9,35453696*10^11 moles. As 4 is a smaller number than 4, the correct manner of approximation would be to round downwards to n(S)=9,35*10^11 mol.

@vasudhaghosal7265

7 жыл бұрын

ZewdPlays

@MellonyBear

7 жыл бұрын

you broke my brain

I'm not smart idk how I ended up here

@richirex888

8 жыл бұрын

Just learn. Grow smart.

@williscorto4540

8 жыл бұрын

+Francisco Arellano stay a while and that will change!

@jasminehill8887

7 жыл бұрын

Anyone can become knowledgeable about anything. Don't doubt urself. Impress urself ❤

@feerag.5336

7 жыл бұрын

That was inspiring woah

Your videos are actually the reason I passed my first chemistry course, so thankyou :)

I found this video in peculair very interesting and well made. It's link with current events makes it less abstract and more easy to capture. Thank you very much!

HOW IN THE WORLD DID HE KNOW HW MY CHEMISTRY CLASS/ LIFE HAS BEEN?!?!?!??!?!

i got 9.63963*10^10 metric tons of limestone needed.

Thanks. I love your videos and they're really helpful. They make my science class fun 😉🙂

I love your guys' channel. Thank you. I am struggling with Chemistry. Lov the math, confused about everything else...

FINALS TODAY STUDYING CRASH COURSE :D

Can we PLEASE have Crash Course Math and Language Arts?

@imagurd

8 жыл бұрын

+Geometry Dash DarkBlocks ever heard of Khan Academy for math? also, what do u mean by Language arts? (schools no longer use that term)

Thanks hank i never understood stron acid and weak base stuff. Makes complete sense

Thanks Hank! I have a Chem final today and this was super helpful

A green little chemist mixed green little chemicals in a green little way. Now green little clouds wave over the green little chemist's green little grave.

"So, forget everything you ever learned about acids, wipe the slate clean, the most common acid on earth is water. Wuh? And water is also the most common base, and am I saying this purely to confuse you? Yes!" - Hank Aww...Thanks, Hank.

Love the Arrested Development reference at 5:31!

Excellent subtle reference to arrested development. Your work is appreciated.