Tony St John

Tony St John

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  • @Sancho_top
    @Sancho_top14 сағат бұрын

    Thanks you. Your video is helpful to me.

  • @AbleWogu
    @AbleWogu4 күн бұрын

    An unknown compound weighing 6.5 Mg gave on combustion 20.47 Mg CO2 and 8.36 Mg H2O at 100°C and 760 mm Hg pressure 0.284 Mg of the compound occupied a volume of 100 mL Calculate the percentage composition Determine the empirical formula and molecular formula of the compound

  • @needforprivacy
    @needforprivacy4 күн бұрын

    What is the reasoning behind Moles being linked to Liters?

  • @arixlxra
    @arixlxra6 күн бұрын

    This helps so much!! I have ALEK quizzes and since I’m taking the summer session, he didn’t put this on the practice HW on ALEK so seeing people get this on the quiz put me in for a loop but this helped me understand the concept more and hopefully I can get that one more 100% I need! Thank you!!

  • @brookekellogg
    @brookekellogg8 күн бұрын

    THANK YOU KING

  • @myla3874
    @myla387413 күн бұрын

    omg this helped so much!!! thank you for explaining it so well i appreciate you

  • @janmajoybanerjee3032
    @janmajoybanerjee303215 күн бұрын

    @4.25 you said 3high multiplet instead of 2 high multiplet ( e)

  • @josephinemmunga
    @josephinemmunga16 күн бұрын

    Where are you getting the one and two 😮😮

  • @8evvied
    @8evvied16 күн бұрын

    Sorted, I’ve just bought polarized Rayban Wayfarers and want to remove the ‘P’ off the lens. This should work great, thanks

  • @annaberlin4008
    @annaberlin400820 күн бұрын

    Thank you!😃✨

  • @darkshadow3083
    @darkshadow308320 күн бұрын

    I did the same.

  • @asofaa
    @asofaa23 күн бұрын

    chat i’m so cooked

  • @needforprivacy
    @needforprivacy4 күн бұрын

    You're good bro, trust me it's not that hard, just requires repetition, we got this

  • @user-zo1dv4in8d
    @user-zo1dv4in8d25 күн бұрын

    U know the teacher be cookin when they make an educational vid in this format. Honestly love paper users.

  • @lizzyd1769
    @lizzyd176929 күн бұрын

    Thank you so much Sir, I appreciate your video and the time and effort of explaining it for better understanding. I have been seriously struggling with this but just by watching this video it was easy to understand. Thank you once again, God bless you.

  • @Nickeo
    @NickeoАй бұрын

    For anyone confused about the last part. First he solved for k given experiment 1. Given rate equation: Rate= k[P4]^2. First isolate k: K=rate/[P4]^2. Then plug in experiment 1 data which is k=(3.19*10^-4)/(0.0110)^2 = 2.636 = 2.64. Then plug in 2.64 to the original rate equation to look like this: Rate = 2.64*[P4]^2. Question c is asking to solve for the rate given P4 and H2 concentrations. Plug in both (H2 will end up being just 1 since H2^0 = 1 which is why I didn't write it before). The equation should look like this: Rate = 2.64*[0.242]^2. This equals 0.155. Thanks!

  • @user-jy4ok4kk7v
    @user-jy4ok4kk7vАй бұрын

    hi,, i need you help,, can u help me to fine my own structur... i try to intrepretation but can not

  • @Jenna-vj2ju
    @Jenna-vj2juАй бұрын

    Why is c more downfield?

  • @MubarratAshabHossaini
    @MubarratAshabHossainiАй бұрын

    Tried this today and it looks great. Plastic lenses or lenses with some coating will scratch not sure about the chromance ones.

  • @AnaPaula-yb3ui
    @AnaPaula-yb3uiАй бұрын

    Love u Tony, thanks so much

  • @augustammuoegbulam2145
    @augustammuoegbulam2145Ай бұрын

    How do I send an NMR data for analysis?

  • @dreamchaser5173
    @dreamchaser5173Ай бұрын

    thanks for all your help...i just came across this video when helping my brother with his high school chem homework and remembered my gen chem days

  • @flipxin7528
    @flipxin7528Ай бұрын

    Thank you

  • @user-cx4vn5rn5y
    @user-cx4vn5rn5y2 ай бұрын

    How did you get 1.86?

  • @TonyStJohn
    @TonyStJohn2 ай бұрын

    1.86 is the constant Kf value for water - so it's just a given constant for water.

  • @chelsea9013
    @chelsea90132 ай бұрын

    Thanks a million, Tony! So why couldn't we use the concentration of the Br- ion (Ksp) in the final ice table for the last calculation?

  • @TonyStJohn
    @TonyStJohn2 ай бұрын

    Hi! If I'm understanding your question correctly - I think the easiest explanation is that we should treat these as two separate problems, and in the second one we're really setting things up "from scratch" aka "starting the calculation over" - you are right to think that the Br- ion is going into solution based on the Ksp calculation, but that is sort of being automatically taken into account in the second calculation when we combine the equilibrium expressions. I hope that makes at least a little bit of sense!

  • @chelsea9013
    @chelsea90132 ай бұрын

    @@TonyStJohn I understand, since we multiplied our two K values it considers the Br- concentration. Thank you for the speedy response!

  • @joepoor1678
    @joepoor16782 ай бұрын

    I didn’t think it was possible, but your way of solving it was more complex then the actual ALEKs explanation lmaoo

  • @iceybreeze4799
    @iceybreeze47992 ай бұрын

    thank you so much I never would have gotten this through the ALEKS explanations

  • @TonyStJohn
    @TonyStJohn2 ай бұрын

    you are welcome!

  • @Whitetrashhero44
    @Whitetrashhero442 ай бұрын

    Thank you the penny worked prefect

  • @willm678
    @willm6782 ай бұрын

    I just got a brand new pair of Ray Ban clubmasters (they’re polarized) and I love them, but the “Ray Ban P” logo is just hideous. I’m scared to do this because I don’t want to scratch a brand new pair of lenses

  • @riyapatil08solapur72
    @riyapatil08solapur722 ай бұрын

    Thankyou sir , your teaching is on the next level🎉🎉 😎

  • @AmanuelAssefa-kj3dm
    @AmanuelAssefa-kj3dm2 ай бұрын

    Thank you bro❤❤❤

  • @GAsantewaa
    @GAsantewaa2 ай бұрын

    Thank you for all your help! Also, that pen writes smoothly! What type of pen is that?

  • @GAsantewaa
    @GAsantewaa2 ай бұрын

    Opp nbm, I just realized this video is like 6 years old...

  • @christianmaix7843
    @christianmaix78432 ай бұрын

    i know this video is 8 years old but I am really confused about a homework question I have, where part of the water freezes after adding the ice and I'm struggling to visualise it on a picture. any help?

  • @sheepmasterrace
    @sheepmasterrace2 ай бұрын

    Good practice problems

  • @GabrielHodge
    @GabrielHodge2 ай бұрын

    My man i can write reactions for this overwhelming load of malarky now

  • @gezandsouza1709
    @gezandsouza170912 күн бұрын

    do you know happen to know how to tell which one is the spectator ion? To create the secondary equation?

  • @cronkywiper
    @cronkywiper2 ай бұрын

    i love it when he doesnt answer the questions

  • @avaalexander1780
    @avaalexander17802 ай бұрын

    With sig figs! The answer is 2.189 x 10^3 kj

  • @aidenworth
    @aidenworth2 ай бұрын

    8 years later and you're carrying me. Thank you bro🙏

  • @ShaheenKhan-cf6yt
    @ShaheenKhan-cf6yt2 ай бұрын

    thank u so much u explaine well god bless u

  • @bittieatshani1175
    @bittieatshani11752 ай бұрын

    BLESS YOU

  • @dexterbalante3791
    @dexterbalante37912 ай бұрын

    im confused where did you get 4 in p4?

  • @_Babita-
    @_Babita-2 ай бұрын

    Tysm for explaining in a very easy and basic manner. It ready helped me a lot.❤

  • @satevamarie3597
    @satevamarie35973 ай бұрын

    The peak at 122 on MS is called a McLafferty rearrangement and it includes a loss of a whole molecule ( a neutral molecule fragmented off). 😊

  • @saqibiqbalbaloch8338
    @saqibiqbalbaloch83383 ай бұрын

    Hello brother Very informative video lecture, thanks I have learnt much

  • @yolandaescribano974
    @yolandaescribano9743 ай бұрын

    Thank you so much ur saving my butt I have an aleks pre-req to complete + these help!!!

  • @astrollogic5630
    @astrollogic56303 ай бұрын

    Thank you so much

  • @user-hy3yu4wx1j
    @user-hy3yu4wx1j3 ай бұрын

    In this video I determine a plausible chemical structure for an organic compound based on the given IR and H NMR spectra.

  • @sarahamaka7978
    @sarahamaka79783 ай бұрын

    The video didn't help at all. 😢 It didn't give me wat I was looking for

  • @sinan7647
    @sinan76473 ай бұрын

    Thx for clarify the net ionics

  • @nicolethm2002
    @nicolethm20023 ай бұрын

    Thanks for this video. These videos are far and few in between but I’m grateful for them 🧡

  • @cynthebarb2147
    @cynthebarb21473 ай бұрын

    You lost me when you redrew it, I understand the cyclohexane part but not the part with M. Very last step/product