Professor Clements
Professor Clements
  • Видео 153
  • Просмотров 112 096
Nuclear Chemistry Part 4 How much radiation do you get and where does it come from, medical applic
In this video I tell you how often you are 'hit' by particles and energy from nuclear radioactive decay (not "radiation" from your cell phone, which is just energy, not radioactive decay particles). We explore natural sources of radiation that are responsible for radiating you! We also talk about a couple medical applications of nuclear radiation and also talk about nuclear fission and fusion as energy sources (and weapons).
Просмотров: 158

Видео

Nuclear Chemistry Part 3 Mass defect and a chance to use E=mc^2 for real
Просмотров 1343 года назад
In this video we explore the concept of mass defect. In simple terms, if you add up the mass of 8 protons and 8 neutrons, you should get the mass of an oxygen-16 nucleus, but you don't. The difference between the theoretical mass and the actual mass is called the mass defect. But where does that mass go? Isn't mass conserved? Not in nuclear reactions! Using the famous equation E=mc^2 we can sho...
Organic part 1 Drawing in organic chemistry, isomers, and naming simple alkanes
Просмотров 2383 года назад
In this video we introduce the topic of organic chemistry - a systematic study of one element on the periodic table! We go over how to draw skeletal structures, which are simplified versions of drawing, much easier to write than Lewis structures. We also name the simple alkenes from methane through decane. We also talk about isomers and conformers in organic chemistry, ending with a reminder ab...
Organic part 3 TMI on how chiral molecules rotate light
Просмотров 1,5 тыс.3 года назад
In this entirely optional video for my class, we go over why a bunch of randomly oriented chiral (optically active) molecules can consistently rotate polarized light. We talk about the nature of light, how to make polarized light, and how polarized light interacts with randomly oriented molecules to consistently rotate in one direction or the other. If you're taking my class, you don't need to ...
Organic part 4 The functional groups
Просмотров 1523 года назад
In this video we go over how to identify functional groups in organic molecules. This includes alkenes, alkynes, aromatics, aldehydes, thiols, alcohols, ethers, carboxylic acids, esters, amines, and amides.
Organic part 2 Identifying chiral optically active molecules
Просмотров 1,1 тыс.3 года назад
In this video we show techniques for identifying chiral organic molecules using skeletal structures and do a lot of practice. At the end I show a few chiral molecules you might run across in your daily life.
Nuclear chemistry part 2 The strong force, detecting radiation, and kinetics of radiation
Просмотров 1133 года назад
In this video we talk about the strong force and how it holds the nucleus together even though the protons are highly repulsive due to electrostatic repulsion. We then talk briefly about how Geiger counters and scintillation counters work to detect radiation. Lastly, we talk about the kinetics of nuclear radioactive decay. All radioactive decay is first order, and we show examples of both carbo...
Nuclear chemistry part 1 Radioactive decay processes, decay series, valley of stability
Просмотров 2333 года назад
In this video we introduce nuclear chemistry. In nuclear chemistry we ignore the electrons and focus on what the nucleus is doing. We go over the fundamental ways that nuclei tend to undergo spontaneous nuclear radioactive decay (alpha particle, beta particle, positron, electron capture, proton emission and neutron emission). We also talk about decay series, and the valley of stability which al...
Transition metals part 1 Configuration, trends, isomers
Просмотров 1353 года назад
In this video, we get an overview of some transition metal chemistry. We talk about how to find electron configurations of charge transition metals, trends in atomic size, ionization energy and electron affinity of transition metals in light of the lanthanide contraction. We talk about ligands, and isomerism including the two structural isomers (coordination isomers, linkage isomers), and the t...
Transition metals part 2, The spectrochemical series
Просмотров 863 года назад
in this video we introduce crystal field theory and talk about d-orbital splitting. We cover the spectrochemical series and how to predict whether complex ions and coordination compounds will be high spin or low spin (by knowing whether ligands are strong field or weak field ligands). We calculate the d-orbital splitting, ∆, using observations about solution color.
Electrochemistry part 5 Why is positive Ecell good, how high can we launch a potato with a battery
Просмотров 923 года назад
In this video, we talk about how to relate the standard cell potential of a Galvanic cell to ∆G (delta G), illustrating why our previous position of "positive Ecell is spontaneous" is correct. We also use the energy in some iron to launch a potato high up in the air, demonstrating the high energy density of batteries!
Electrochemistry part 8 An overview of battery technology and corrosion
Просмотров 1273 года назад
In this video we give a brief overview of some battery technology (such as lithium batteries, AA batteries and car batteries) and also talk about corrosion and its prevention. (This material is not going to be tested in the class, but it is still interesting material.)
Electrochemistry part 7 Electrolysis, the world running backwards
Просмотров 1043 года назад
In this video we talk about electrolysis, or "how to run a Galvanic cell backwards". We go over the concept, talk about overvoltage (activation energy), and give examples of calculating the time it takes to do electrolysis.
Electrochemistry part 6 Relating Ecell to ∆G and Keq, the Nernst equation and concentration cells
Просмотров 1383 года назад
In this video, we notice that Ecell can be related to ∆G, so it can also be related to the equilibrium constant, Keq. And if it can be related to Keq, it can also be related to Q, the reaction quotient when not at equilibrium conditions (non-standard conditions). This gives us the Nernst equation. Finally, we apply the Nernst equation to making a concentration cell.
Electrochemistry Part 4 Calculating the standard cell potential from tables of reduction potential
Просмотров 873 года назад
In this video we talk about some of the numbers needed to do calculations in cells (such as Faraday's constant, or the charge on an electron, or what is a volt, or what is an amp). We then go on to show how standard reduction potentials are all calculated against a standard hydrogen electrode (SHE). We use those numbers to calculate cell potentials using the equation Ecell = Ecathode - Eanode (...
Electrochemistry part 3 Drawing cells and using line notation
Просмотров 1493 года назад
Electrochemistry part 3 Drawing cells and using line notation
Electrochemistry part 2 Balancing redox reactions in acidic and basic solution
Просмотров 1753 года назад
Electrochemistry part 2 Balancing redox reactions in acidic and basic solution
Electrochemistry part 1 Redox review and introduction to balancing redox reactions
Просмотров 1063 года назад
Electrochemistry part 1 Redox review and introduction to balancing redox reactions
Thermodynamics Part 6 Calculating Gibbs Free Energy at Non Standard Conditions and relating Delta
Просмотров 1183 года назад
Thermodynamics Part 6 Calculating Gibbs Free Energy at Non Standard Conditions and relating Delta
Thermodynamics Part 5 Calculating Gibbs Free Energy
Просмотров 843 года назад
Thermodynamics Part 5 Calculating Gibbs Free Energy
Thermodynamics Part 4 Calculating entropy of the system and introduction to Gibbs Free Energy
Просмотров 653 года назад
Thermodynamics Part 4 Calculating entropy of the system and introduction to Gibbs Free Energy
Thermodynamics Part 3 Predicting entropy of reactions and relative entropy of molecules and atoms
Просмотров 803 года назад
Thermodynamics Part 3 Predicting entropy of reactions and relative entropy of molecules and atoms
Thermodynamics Part 2 The second law, why water condenses, and entropy of the surroundings
Просмотров 733 года назад
Thermodynamics Part 2 The second law, why water condenses, and entropy of the surroundings
Thermodynamics Part 1 What makes the world go and what is entropy
Просмотров 1193 года назад
Thermodynamics Part 1 What makes the world go and what is entropy
Other Equilibrium Part 4, Complex ion formation
Просмотров 4323 года назад
Other Equilibrium Part 4, Complex ion formation
Other Equilibrium Part 3, Predicting precipitation, selective precipitation, amphoteric hydroxides
Просмотров 1373 года назад
Other Equilibrium Part 3, Predicting precipitation, selective precipitation, amphoteric hydroxides
Other Equilibrium Part 2, The Common Ion Effect, and how pH affects solubility
Просмотров 1003 года назад
Other Equilibrium Part 2, The Common Ion Effect, and how pH affects solubility
Other Equilibrium Part 1, Introduction to solubility and the solubility product constant
Просмотров 933 года назад
Other Equilibrium Part 1, Introduction to solubility and the solubility product constant
Acids and Bases Part 5b The pH of salts
Просмотров 833 года назад
Acids and Bases Part 5b The pH of salts
Acids and Bases Part 5 Calculating the pH of weak bases and polyprotic acids
Просмотров 1823 года назад
Acids and Bases Part 5 Calculating the pH of weak bases and polyprotic acids

Комментарии

  • @Jsimonlane
    @Jsimonlane 2 дня назад

    so useful. thank you

  • @malloriewatson1150
    @malloriewatson1150 25 дней назад

    Thank you for taking the time to make this video! :)

  • @BoyYob-jr2bw
    @BoyYob-jr2bw Месяц назад

    thanks alot

  • @kayecatacutan8955
    @kayecatacutan8955 3 месяца назад

    you are a gift from heaven! thank you, you just saved me from failure

  • @mqttia-1924
    @mqttia-1924 3 месяца назад

    Thank you so much!

  • @denizissimo
    @denizissimo 4 месяца назад

    Brilliant! Thank you

  • @juantkastellar2655
    @juantkastellar2655 4 месяца назад

    At last I could understand this phenomenon in deep.

  • @user-li1dy5nh4s
    @user-li1dy5nh4s 5 месяцев назад

    Thank you for all your videos. Super helpful.

  • @BigRed383
    @BigRed383 5 месяцев назад

    So the rate constant you pulled at the 6:30 mark, is that not supposed to have the negative sign attached?

    • @Ren18362
      @Ren18362 5 месяцев назад

      no because the rate constant is the negative of the slope/gradient

  • @rhinoinahat
    @rhinoinahat 5 месяцев назад

    Another banger from prof clements

  • @SachinGupta-cr7hh
    @SachinGupta-cr7hh 6 месяцев назад

    1:16 there is a mistake, there are 11 hydrogen not 12 so keep aware of counting

  • @Indrajeet_roy007
    @Indrajeet_roy007 6 месяцев назад

    Great help

  • @johnweldon1259
    @johnweldon1259 7 месяцев назад

    Yesss I was wondering why you wouldn’t test for 2x/0.50… my textbook also said x/0.50 or whatever the initial concentration was. So confused

  • @star-cm2ei
    @star-cm2ei 9 месяцев назад

    I loved this! Thanks!

  • @SS-pn7ss
    @SS-pn7ss 9 месяцев назад

    Thank you so much professor

  • @nickslogic7612
    @nickslogic7612 9 месяцев назад

    Very well done. I have a question, however. Since the levorotatory and dextrorotatory anti isomers could have either the S or R configuration and it’s not specific to one or the other, how exactly can we analyze which isomer is in which configuration and why is it not specific?

  • @user-tp2sp7jt8f
    @user-tp2sp7jt8f 10 месяцев назад

    Thanks a lot ! I was wondering how it could happen and searching an explanation on RUclips and you helped me !

  • @mangeof8230
    @mangeof8230 Год назад

    I really enjoyed your passion, thank you for the video

  • @tanedmund-fg5gr
    @tanedmund-fg5gr Год назад

    how to get0.0592

    • @koosa5804
      @koosa5804 11 месяцев назад

      I believe it is a constant.

  • @thomashalm8585
    @thomashalm8585 Год назад

    whats the full meaning of BRICE please

  • @lupitaperez814
    @lupitaperez814 Год назад

    GIRL YOU JUST SAFED MY LIFE 😢

  • @iknowyouknowlinoo6010
    @iknowyouknowlinoo6010 Год назад

    thank you so much for making this!!! this is going to save my life for this lab

  • @Craig-qb4ps
    @Craig-qb4ps Год назад

    165lbs = to how many kilograms?

  • @yukinaminato
    @yukinaminato Год назад

    @Professor Clements sir, may I ask, is this BRICE method only applicable for solving complex ion formation problems?

  • @PaVIThRa9188
    @PaVIThRa9188 Год назад

    Great !

  • @programmingwiz9251
    @programmingwiz9251 Год назад

    Arigatho....

  • @enjeratube5585
    @enjeratube5585 2 года назад

    Thank u for this. It helped. From Africa (Ethiopia)

  • @hookem3768
    @hookem3768 2 года назад

    So are you telling me that, when light enters a polarizer its orientation or direction is limited to the polarizer design. But, since (you argue) linear light is actually two photons of light perfectly opposite in rotation, then once light enter a polirimeter the two components then continue their respective rotation (in opposite directions) and so the result or the measured rotation will be because one of the two photons rotation was interacting/refracts more with the molecule in the polarimeter? So, does this also mean that when a scientist chooses a specific wavelength of light to pass through a polarimeter, that light still rotates like a spring? Excluding the presence of chiral molecules: will green light passing through a poalrimeter rotate?

  • @marianapdl5
    @marianapdl5 2 года назад

    Great video very helpful! At 3:33 how exactly did you get 10 to the 8th for the answer, you said something about a 10 to the 11th minus 3 but I'm not seeing that

  • @ashleyholum9078
    @ashleyholum9078 2 года назад

    We keep the exponents negative in the numerator correct?

  • @paulhetherington3854
    @paulhetherington3854 2 года назад

    < /_cmd void cell = structure atomic mass per 8' bits map in whole freqs data structures / /yP'WV(8t) > 2' + c'' per atomic struct before and after > Mo''' yP'WV(8't) > {4',2'' then 8(t),4',2'+ c''} / >

  • @alexacook3383
    @alexacook3383 2 года назад

    This video saved me! thanks so much!!!

  • @cat875
    @cat875 2 года назад

    Thank youuuu!!!! I was so confused with this during lab but the simple explanation helped so much

  • @hamidkiangaikani
    @hamidkiangaikani 2 года назад

    Thnaks

  • @trsgamer4721
    @trsgamer4721 2 года назад

    1neno m =10 to the power -9

  • @husseinal-naeb2163
    @husseinal-naeb2163 2 года назад

    Best explanation on this topic .I searched alot and I am glad that I found your video..Thank you so much

  • @aviralsingh7937
    @aviralsingh7937 3 года назад

    Thank you so much ma'am It's so much helpful for me THANKS A LOT 😙😙😙

  • @thatomabuya7096
    @thatomabuya7096 3 года назад

    What is the value of meter?

  • @MakoMori
    @MakoMori 3 года назад

    Thank you for making this video. I couldn't understand the explanation ALEKS gave for this type of problem. You made it easy to understand.

  • @xiaolintraditional90
    @xiaolintraditional90 3 года назад

    You make it SO easy! I got so confused with just the ICE in class

  • @ChemDamned
    @ChemDamned 3 года назад

    Fantastic

  • @roannabdeladl7065
    @roannabdeladl7065 3 года назад

    my savior omg thank u

  • @austinschwartz7424
    @austinschwartz7424 3 года назад

    thank you this finally is making sense

  • @hannahomodt5813
    @hannahomodt5813 3 года назад

    great video!

  • @josephguse
    @josephguse 3 года назад

    Thank you, Professor. This was useful. Especially liked the tip about how you organize your quiz question banks. What I haven't been about to figure out how to do is to make a "Multiple Answer" question with numeric answers - that is where I can specify margin of error for each part. The Multiple Answer form in Canvas seems to be strictly for text. Best, Joseph Guse, Economics Washing and Lee University.

    • @professorclements8539
      @professorclements8539 3 года назад

      Joseph - The reason you haven't found it is because it doesn't exist. Canvas does not try (at all) to cater to those of us who really use numbers for a living. There is no numeric multiple answer format. What I have done in the past is to manually enter in 15 different answers that represent the possible range of answers I want, and try to be very specific with the students about how to enter in their answer to match the format I expect. It's an awful workaround to what should be a problem with a built-in solution.

    • @richardazu7445
      @richardazu7445 2 года назад

      Hello Joseph, I hope you're keeping well. Did you manage to find a way out in fixing formulas for multiple answers. Thanks

  • @mohammedalfa3569
    @mohammedalfa3569 3 года назад

    that's really good, thank you.

  • @abilmahazein
    @abilmahazein 3 года назад

    Big thanks Sir 😀😀😀

  • @kubu79
    @kubu79 3 года назад

    the carbon in position 2, counting from the right of the carbon chain, at minute 19:29 of the video, is actually bonded to 1 hydrogen and not 2, because it is already bonded to 3 other carbon atoms.

    • @professorclements8539
      @professorclements8539 3 года назад

      Thanks! You are absolutely correct. I put a comment in the video description about the error, blurred the #2, but I don't know an easy way of editing it while on RUclips to put the correct number there... I will have to edit it manually one of these days.