Measuring Density with Pycnometers, Hydrometers, and Graduated Cylinders
15,722
2024-06-01に共有
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コメント (21)
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I am a retired analytical chemist. One mistake I noted was the lack of gloves when handling analytical glassware. Finger prints have mass and will change resuls in the second to the third decimal place depending on cleanliness of hands. Also, non-conducting liquids will suffer from static charges so an anti-static device is recommended. Otherwise your chemistry is excellent as ever Dr. Nurdrage!
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As a non-chemist, I sometimes find these videos more interesting than your others. It feels like I'm legit learning something rather than watching a magic trick.
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The flask grinding part was something I had heard about but I hadn't seen anyone actually do it - super useful
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Non physical things such as minds, which can be exceptionally dense. Solid gold.
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When you started mentioning the "U-Tube density meter" I started thinking that youtube had some means of measuring the density of human minds.
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The mass of YouTube and the density are off the charts
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I am not any sort of chemist but I still find this kind of stuff super interesting. It's about human ingenuity and how people figured out interesting ways to solve problems and that is always interesting at least to me. I will probably never need to know how to do any of this but I like knowing it anyway.
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I’m definitely a fan of flashy synthetic chemistry stuff, but I really appreciate the analytical deep dives. I always learn something new and analytical chemistry is in the “how the sausage gets made” territory of chemistry. Dreadfully unsexy but damned useful. Thank you for years of contributions to the science!
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As one who also enjoys maker channels, I couldn’t help but think when seeing the gas pycnometer and U tube device, “those are things that a lot of folks could make themselves if push came to shove.”
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This is one of my favorite videos that you ever made and i have been watching since the beginning
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There is no good reason for me to watch this but I did. I feel smarter, though not in a way that is useful for my practical day to day life experience. I do not feel that my time has been wasted.
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Nurd Rage keep up these videos, one of the most credible sources of chemical techniques on YouTube and an added bonus you are a fellow Canadian!
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That's basically what is the topic of a practical exam I need to take in a few weeks to become a chemical lab assistant. Love my job but the pycnometer makes me wanna end myself sometimes.
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1:14 you got me good with that one. Congrats !
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genuinely excited to learn dude this is a topic i havent ever given much thought to thank you for the lesson :D
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Its kinda crazy how much ive learned watching your channel for the past 14 years since i was a freshman in highschool, i wound up just doing HVAC lol. I still have a nice collection of mixed gold ive been piling up to turn into pure gold, im just waiting until i decide to invest in the proper equipment and build a ventilation hood.
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An entire series on metrology in chemistry would be nice. Especially the "this is good enough for home amateurs" observations. I personally tend to stress WAAAY too much over precision in calculations, despite not having the means to measure at the numbers of digits I'm fussing over.
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I also used to get irritated when employers would ask me to evaluate tedious things. Once I was asked to evaluate several thermal interface materials for their performance, and vocally griped about it to my boss. I later realized how utterly fascinating all of this was. It's just how it goes in science sometimes. Thanks for the great content!
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When you were talking about the cap wobbling in the bottle I was thinking, hey you could lap the cap and bottle with valve lapping compound. And then you did exactly that!
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Electrical engineer working in chemical manufacturing - we use coriolis flow meters for accurate massflow (e.g. custody transfer), they work the same way as the U tube density meters
