Пікірлер

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  @TheExplosiveGuy19 күн бұрын

  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...

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  @pavan3187Ай бұрын

  Please show the calculation part

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  @Raymondzhang-therandomventuresАй бұрын

  boiling chip? 😕

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  @zillurrahman2706Ай бұрын

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

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  @xenoxaos13 ай бұрын

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

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  @-_.Nobody._-3694 ай бұрын

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

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  @Dowhap4 ай бұрын

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

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  @johnkirk94735 ай бұрын

  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.

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  @Gujaratbio5 ай бұрын

  Wonderful ❤

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  @mdatiqurrahman99516 ай бұрын

  Incredible explanation- must appreciate that. 🤗

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  @Venaber6 ай бұрын

  thanks for the expansion explanation

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  @dpasek17 ай бұрын

  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)

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  @avenuex37317 ай бұрын

  Nice method

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  @justmdylan8 ай бұрын

  In my book au cas où

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  @user-tp1co2yg2f8 ай бұрын

  In my book

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  @sodoododnyma88648 ай бұрын

  I have physics lab tomorrow, prayForMeGuyzz

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  @meanman69929 ай бұрын

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

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  @citizenscientistsworkshop19489 ай бұрын

  Try that and let me know how it works out for you.

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  @EddieTheH9 ай бұрын

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

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  @Louie_Batton9 ай бұрын

  Excellent Video!!

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  @user-su1dk8et2l9 ай бұрын

  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!

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  @citizenscientistsworkshop19489 ай бұрын

  The air bubbles will displace water. Therefore the weight of the water used in the calibration will be be too small. This will cause you to underestimate the volume of the flask and therefore overestimate the density of whatever you measure.

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  @gabrielawandut990110 ай бұрын

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

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  @henryj.8528 Жыл бұрын

  Tried it and it works much better than the cookie sheet method...Thanks...

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  @anonymousandy2789 Жыл бұрын

  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

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  @MalawisLilleKanal Жыл бұрын

  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.

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  @anonymousandy2789 Жыл бұрын

  That's a pretty good idea. The sand would protect you from glass shrapnel in the event of overpressuring

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  @firesurfer Жыл бұрын

  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.

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  @citizenscientistsworkshop1948 Жыл бұрын

  Sure, in principle. But then the expansion coefficient, the reflectivity, the resistivity, thermal conductance and other properties wouldn’t match. There is no way to fake a material’s easy to measure properties at the same time.

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  @corydemeray7594 Жыл бұрын

  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

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  @citizenscientistsworkshop1948 Жыл бұрын

  Thank you for the kind words! I deeply appreciate them.

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  @corydemeray7594 Жыл бұрын

  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

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  @citizenscientistsworkshop1948 Жыл бұрын

  Thanks again for you kind thoughts. I hope to be able to do a video every couple of weeks when I eventually retire.

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  @bosshai972 Жыл бұрын

  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.

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  @citizenscientistsworkshop1948 Жыл бұрын

  Forgive me, but you haven't given me enough information. I can't tell where the error is from what you've told me.

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  @moe40cal Жыл бұрын

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

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  @generalingwer4341 Жыл бұрын

  Very useful video.well done!!

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  @seancsnm Жыл бұрын

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

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  @NuwanPushpakumara-jn6qq Жыл бұрын

  Thank for lesson, it's really help for me

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  @alexlabs4858 Жыл бұрын

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

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  @TheExplosiveGuy Жыл бұрын

  Lol it definitely works, but 3Å molecular sieves are a bit cleaner, less grit down the back of the throat😉🤣.

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  @marwaabdelkader2409 Жыл бұрын

  K2CO3 not KCO3, plz correct this!

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  @brunovelasque8951 Жыл бұрын

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

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  @SherKhan0122 Жыл бұрын

  Thank you!

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  @grahamwilson8843 Жыл бұрын

  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!

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  @aSlimyDragon Жыл бұрын

  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.

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  @citizenscientistsworkshop1948 Жыл бұрын

  You’re absolutely right. I should have demonstrated the volume error directly. But the electronic scale was calibrated, and the self consistency with the measurements make it clear what the true volume was. Also, thanks for the correction re “trivial.” I have always thought trivial to mean both “trifling” and “ easy to perform.” I’ll keep your point in mind in the future.

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  @jodyclark32492 жыл бұрын

  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

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  @citizenscientistsworkshop19482 жыл бұрын

  Good advice. I'll try this out. If I use it in a future video I'll make sure to credit you for the suggestion. Many thanks!

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  @SethHixie Жыл бұрын

  This is a good idea. Make sure you cover the salts in-between cool downs so they're not absorbing water

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  @muetaz_zaydan2 жыл бұрын

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

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  @AnthonyFrancisJones2 жыл бұрын

  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.

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  @WhiteScienceCommunity2 жыл бұрын

  شرح ممتاز

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  @hulinwei59152 жыл бұрын

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

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  @achalawithanage71412 жыл бұрын

  Thank you,great explanation✨️

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  @sayad31332 жыл бұрын

  Hello professor Is it possible to increase the density of mercury?

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  @citizenscientistsworkshop19482 жыл бұрын

  No. Density is an intrinsic property of a substance. It can not be changed.

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  @cherylm2C66712 жыл бұрын

  Very good to know, and safely small, portable and easy to budget.

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  @Actrl512 жыл бұрын

  5:01, ok that was funny

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  @karolus282 жыл бұрын

  water is a very good drowning agent

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  @tajcnsun84272 жыл бұрын

  Gak gak gak gak ngerti aku gak ngerti dengan ini semua

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  @NubeBuster2 жыл бұрын

  You've saved me from disaster. According to some sources 180°C would be enough to make MgSO4.H2O (one water molecule) and then nothing happens until 2000°C where is fully dehydrates. I think the 250°C that you're recommending is a bit too much. I'm doing 200°C Update: yeah 200°C is way to slow. 250 it is