Комментарии •

  • @vixeninsertmemehere3858
    @vixeninsertmemehere3858 3 года назад +343

    I’m assuming many people are gonna have to watch this in the future, this is greetings from the year 2021, hope however far in the future you are (even if it’s just minutes) is going well for you :)

    • @jamalalbttashi5582
      @jamalalbttashi5582 2 года назад +3

      Hi, you from the previous year. You manipulator of time.
      Your anime level future sight caught me.

    • @oliver0408
      @oliver0408 2 года назад +4

      no the queen died rip😩

    • @Ibrahim-zm1ds
      @Ibrahim-zm1ds 2 года назад

      Man said greetings

    • @fleurmartin
      @fleurmartin Год назад

      2022.

    • @mahnoorrc
      @mahnoorrc Год назад

      2023

  • @cremebrulee2484
    @cremebrulee2484 Год назад +10

    I remember learning to do this in 3rd year chemistry. Now I’m in advanced higher where I actually had to use this because the lab technician in my school decided to give us a chemical we needed for an experiment as a dry powder instead of a solution.

  • @claudefarrugia9450
    @claudefarrugia9450 8 лет назад +99

    At around 3:00 - 3:05, one can quite clearly see the double line in the neck of the flask, indicating that the viewer is not looking perfectly horizontally through the neck of the flask, and hence giving rise to parallax error. This should be avoided, and it should also be pointed out, as it gives rise to determinate error.

    • @slurm-enjoyer
      @slurm-enjoyer 5 лет назад +21

      shut up nerd

    • @georgesharville6086
      @georgesharville6086 4 года назад +18

      ah shush man

    • @liamcarson2201
      @liamcarson2201 4 года назад +1

      Fuck up Ned

    • @muhammedsahil12
      @muhammedsahil12 4 года назад

      Claude Farrugia no one gives a shit

    • @pubgiraqi6999
      @pubgiraqi6999 3 года назад +2

      Write an experimental procedure (instructions) for preparing five calibration solutions. You should start with solid copper sulphate pentahydrate (molecular mass = 250 g mol-1) and prepare of a 100 mL aqueous stock solution of Cu2+ ions with a concentration of 0.1 mol dm-3. This stock should then be used to produce five calibration solutions with concentrations of 0.01, 0.02, 0.04, 0.06, 0.08 mol dm- 3. You should be specific about the glassware required and the masses and volumes used.
      Help me answer this question please

  • @wadigkin95
    @wadigkin95 2 года назад +13

    shouldnt the swirling/shaking of the volumetric flask be done after you rinsed it through the wall of the volumetric flask? And the turning the volumetric flask upside down should it be done?, wouldnt the solution touch the stopper and actually affect the final concentration...?

  • @simonmaverick9201
    @simonmaverick9201 4 года назад +11

    Simple technique and a common source of titrimetric errors for students.

  • @natej1026
    @natej1026 4 года назад +13

    Sat here going over my applied science work....

  • @PuudingMusic
    @PuudingMusic 3 года назад +12

    2:52 describes my anxiety for tomorrow's chemistry test

    • @pubgiraqi6999
      @pubgiraqi6999 3 года назад +1

      My deadline submission is tomorrow and my anxiety is 100%

    • @PuudingMusic
      @PuudingMusic 3 года назад

      @@pubgiraqi6999 :O good luck

    • @lilkae8864
      @lilkae8864 2 года назад

      how'd the test go?

    • @PuudingMusic
      @PuudingMusic 2 года назад

      @@lilkae8864 honestly i don't remember but my recent one was bad

    • @lilkae8864
      @lilkae8864 2 года назад

      @@PuudingMusic damn man... collab?

  • @shitakimushroom7058
    @shitakimushroom7058 3 года назад +3

    I'm here searching for the right solvent I would use to prepare a stock solution for my plant extract. I was looking for a solvent that would preserve the citral component of th plant extract that I will be using. But I can't still find it 😭

  • @Naveenbabuborugadda
    @Naveenbabuborugadda 7 месяцев назад

    10% NaOH means how much should I weight take for the standard solution?

  • @Berghiker
    @Berghiker 2 года назад

    What does that line mean? Why is it important?

  • @ملاكالصامت-ح2ب
    @ملاكالصامت-ح2ب 4 года назад +1

    How much water did you add at the beginning and how the weight of sample

    • @Faisal-xb3zs
      @Faisal-xb3zs 3 года назад +1

      Water at the start shouldn’t affect the standard solution as it is measured at the end in the long neck flask.

  • @mozzan99ll93
    @mozzan99ll93 2 года назад +2

    Thank you soooo much 🙏⬅️

  • @c6mbo
    @c6mbo 23 дня назад

    life saver.

  • @jackcoleman1947
    @jackcoleman1947 3 года назад +4

    very very cool!

  • @linganibalise2833
    @linganibalise2833 3 года назад +2

    Wow thank you💞

  • @Hyperrasf
    @Hyperrasf Год назад

    This was very helful

  • @aravinddeshpande7175
    @aravinddeshpande7175 4 года назад

    How to prepare IODINE 1ml equals to 0.001mg standard solution?

  • @randyross5630
    @randyross5630 4 года назад +1

    trying to find out how to make quercetin because it should be a cheap and effective Covid-19 Treatment...

    • @benm44
      @benm44 3 года назад

      u r genius

  • @kehanamaratunge1597
    @kehanamaratunge1597 6 лет назад +2

    yo where it at

  • @mollyyu7224
    @mollyyu7224 2 года назад +1

    How to calculate the mass you need????😭

    • @cremebrulee2484
      @cremebrulee2484 Год назад +2

      Assuming you have a desired concentration and volume. You find the moles of solute needed by multiplying the concentration (in mol/L) by the volume(in litres)
      then multiply the number of moles by the gram formula mass of the substance you are making a solution out of and that gives you the required mass.

    • @SamuelGashaw-j9u
      @SamuelGashaw-j9u 3 дня назад

      @@cremebrulee2484 too late 😂

  • @yes9234
    @yes9234 2 года назад +2

    What a bogstandard bogus video.
    Regards, Archibald

  • @e0te9
    @e0te9 2 года назад +1

    تحضير المحاليل

    • @HallaShawally123
      @HallaShawally123 Год назад +1

      لوسمحت ممكن توضيح لخطوة حساب الكتلة و التركيز إن أمكن؟

  • @ataulhasantanim886
    @ataulhasantanim886 4 года назад

    Thanks

  • @webmaster8925
    @webmaster8925 3 года назад +1

    நியமக் கரைசல்களை தயாரிக்கும் முறை...

  • @reetasingh6493
    @reetasingh6493 3 года назад

    Mam please iske age ke video s banayiye mam

  • @matthewsarich5516
    @matthewsarich5516 3 года назад

    Very cool thank you

  • @leenalsader8476
    @leenalsader8476 3 года назад

    Thanks!

  • @Loading...81425
    @Loading...81425 5 месяцев назад

    طلاب السادس الفصل السادس وينكم😂

  • @akhsarbekgetoev7725
    @akhsarbekgetoev7725 3 года назад

    Thanks very much

  • @alra_4777
    @alra_4777 6 лет назад +2

    3rB poseu els subtituls per saber les paraules jajaja

  • @alexgoodwin2465
    @alexgoodwin2465 4 года назад +4

    Bruh

  • @taragragg3961
    @taragragg3961 9 месяцев назад

    Tory making Gak

  • @youssefasaad4345
    @youssefasaad4345 11 месяцев назад

    any Lebanese University students?

    • @redredred8408
      @redredred8408 11 месяцев назад

      Exacts extracts and carmel acts

  • @_trm_4339
    @_trm_4339 Год назад

    hi 2026

  • @chimicaItisViola
    @chimicaItisViola Год назад +1

    a couple of big practical mistakes! so disappointed considering the video source!

  • @shahadlaith00
    @shahadlaith00 4 года назад +1

    🤔🤔🤔🤭

    • @matthewsarich5516
      @matthewsarich5516 3 года назад

      its easy bro

    • @3sha_i
      @3sha_i 3 года назад

      دازيلكم ياه عالكلاس🙂😂

    • @shahadlaith00
      @shahadlaith00 3 года назад +1

      @@3sha_i 😂😂😂هاي العام من جنت مرحله اولى😂💙

    • @3sha_i
      @3sha_i 3 года назад

      @@shahadlaith00 وهسه اني مرحله اولى وداشوفه💔

    • @shahadlaith00
      @shahadlaith00 3 года назад

      @@3sha_i 💙💙ان شاء الله تطلعين منها💙وهيه زينه