วีดีโอ

I love it! Using a tray is a pain in the ass

Great class sir

this is incredible!!! Science can now be democratic!!

Thanks🥰

Thank you for this! I have a closet full of bottles and jars just 'cause they could be useful, so this type of resourcefulness is exciting

The best thing about this video is that he uses SI units, Thank You.

How long does that desiccant last how often would that need to be replaced

Voy a probar con un homo de microondas

I may be the odd man out here but my preference is to throw the epsom salt in a cheap Amazon stainless steel vacuum pot and run a propane torch or bunsen burner under the bottom of the pot while shaking it around, the vacuum and heat prevents the water from condensing into the solid material thereby avoiding most of the caking issue, and by the time the powder has turned a dark cherry red hot there is no chance a single molecule of water remains in the magnesium sulfate, it's about as dry as physically possible, and to top it all off it takes all of five minutes to heat up and reach full dehydration. It does require some minimal grinding to get a few tiny little clumps out but it comes out as fine as talcum powder after a three second run through my chemical coffee grinder. The oven method may be easier as far as the amount of work put in, but being able to refresh a batch of dessicant in ten minutes can be pretty damn handy in a pinch...

Please show the calculation part

boiling chip? 😕

How can I get the density of powdered particles? Thanks for the video, it is very helpful.

Dip the galvanized wire in some HCl or maybe some vinegar to get rid of the zinc. Zinc fumes are no fun!

Bro u still alive? Would be happy to see more of your severely underrated genius videos❤

Waste vegetable oil also works. This is how I heat my "lab glassware".

I'm setting up a U6 and its been going pretty well. I have to complement LabJack's documentation, software and support people. I'm building what I call a RED system; that is Rare Event Dectector. I've got three K Thermocouples; they work great with a cheap laptop. Right now I'm configuring a LTC1966 to monitor AC voltages. While the experiment is running for days I want to know if the power failed or flickered at 2 am. That would explain the odd data around 2 am. My next goal is use the counter input to monitor background radiation and mechanical shocks as odometers. And of course, eventually, use the U6 outputs to control advanced experiments; so when something happens a 2 am I can turn on a video camera, etc. Hey, before I forget, this is a good introduction to LabJack hardware and how to properly install the sensors. In other words, always check for and remove electrical noise.

Wonderful ❤

Incredible explanation- must appreciate that. 🤗

thanks for the expansion explanation

You can dehydrate MgSO4.7H2O to the trihydrate without melting by gently heating to~ 95°C. Spread out a ~5mm deep layer of Epsom salt crystals on a baking sheet and heat for as long as necessary (a couple of hours) until a 50g test sample loses about 14g to weigh ~36g. The crystals will turn white and might clump a little, but any lumps can easily be broken up by gently crushing with a spatula. There is no need to grind to a powder unless you actually want a powdered product. The second step is to heat the trihydrate to 130°C for as long as necessary and you will get the monohydrate after the original 50g test sample loses another ~8g to weigh ~28g. I have personally verified these figures. There is no need to heat further to ~ 250°C as you will not lose any more water of hydration. The monohydrate is as far as you can go unless you can heat above about 350°C which is the decomposition temperature of the monohydrate. See: H. -H. Emons; G. Ziegenbalg; R. Naumann; F. Paulik (1990). Thermal decomposition of the magnesium sulphate hydrates under quasi-isothermal and quasi-isobaric conditions. , 36(4), 1265-1279. doi:10.1007/bf01914050 (paywall)

Nice method

In my book au cas où

In my book

I have physics lab tomorrow, prayForMeGuyzz

Just cut the jacket off, and stuff it with the ceramic insulation…

I usually get my smoke pre-weighed into 1/2 ounces...

Excellent Video!!

I have a question: When determining the exact volume of the pycnometer, if it is filled with deionized water and contains several air bubbles inside, what impact will this error have on the determination of the mass density of solutions with known concentrations? Will the mass densities be overestimated, underestimated, or does the error have no impact on the determination of the mass density of the solutions? Thank you!

Would it be possible to activate subtitles on occasion? Thank you

I successfully boiled water inside of a bud light platinum bottle sat on top of a porcelain plate inside of a pot with chips of glass as boiling stones. I didn't fill it with oil though. I mearly coated the bottom of the pot to prevent the metal from melting and heated slowly over the course of about an hour

I've done basically the same, but with sand. Not sure if it works as well, but seems decent enough. First add a decent layer of sand in the pot, then push/wiggle the bottle/jar into the sand. Finally pour sand down along the sides. Remember that the sand gets really hot, and lifting the bottle/jar means you have to let everything cool before starting again, as you will not be able to push the bottle far enough down into the sand. As a bonus - If it boils over, there is no oil to start a fire.

Ummm, a side note, can the density of gold be faked? That is, using a perfect combination of gold and tungsten to create the equivalent of gold. possibly with hollow spaces inside to match volume? I think in theory, to get a perfect calculation, the particular item would need to be melted down to eliminate spaces.

your so underrated... your vids are on par with nilereds.. somhow hes obtained 6000 times more subs than you i understand its not a competition but this is value where value earned should be value paid... only tips i can give are your thumbnails.. they should never use a word that someone may not know...like KILN..i knew what backyard smelter was before a kiln...and the picture to be appealing should be 1 image or 2 in a comparison/sequence vid.. this should be one photo with backround some colour/shade appealing backdrop or one edited in...im just goinbg by what i think... my aunts an interior designer.. thinks for people about what they want to see lmao

nilered from the future.. you should have more views..your stuff hasnt reached the right viral sector yet....hmmmm..your an anomally. i subscribed ..hope my 100000 clone accounts follow suit....just need more monkeys

Hello sir I got apparent specific gravity is 1.5 than what would be percentage v/v according to aoac chart. Please help me. I got stuck here.

Wow, I guess I am the only person who had this question randomly pop up in their head

Very useful video.well done!!

I've never used Labjack but it's absolutely hilarious that their software (at least the UI) was written in LabVIEW.

Thank for lesson, it's really help for me

Liquor stores HATE this one simple trick to dry ethanol to 100%!

K2CO3 not KCO3, plz correct this!

Wow this video is super helpful! You explained the subject well in a short and concise manner. Thank you so much!

Thank you!

I really appreciate that you made this! A perfect way to know what I'm doing going into the density lab in chemistry class. Thanks!

Great video, but the massive discrepancy of the pycnometer is bugging me. I feel like you should've poured the full volume of water into a graduated cylinder just to confirm there wasn't something off with the calculations somehow. Because that seems really weird for the printed value to be so wrong. Also, you seem to be using "trivial" to mean "easy". The only non-mathematical definition of trivial has it referring to something that's of little worth or value. Like trivia facts, which are just small, relatively unimportant tidbits about a topic. Might be fun to know, but ultimately not very important.

Place in ceramic dish. Microwave a few min. It will melt and bubble then dry in minutes. Careful not to overheat your microwave. The dish will be extremely hot. I wouldn’t do more than two consecutive batches. Break up the dried MgSO4 and put in an airtight jar to cool. This can be prepared on the fly if needed. Ovens… ha

I think a syringe is cheaper specially after finding out these pycnometers can be off by 5 ml

Excellent explanation. I have used the old ones that were hidden away in a dusty cupboard for years with young students and they enjoyed both the understanding of density and comparisons of distilled and salt water.

شرح ممتاز

very very easy to understand! Thank you for sharing this video!