Thanks you so much sir.. You make things easier... if you can be a teacher your children will always get 100% you make everything easy in both physics and chemistry.. thanks a lot

@inspiringlounge3784

3 жыл бұрын

That's what I also realized

@MlungisiNkosi

3 жыл бұрын

Thank you... I already am a teacher 😊

Why do we always start to understand the work when we write the next day wow groot man you the best ❤ I appreciate it I know I'm gonna pass tomorrow 🎉

@MlungisiNkosi

8 ай бұрын

That is awesome

😭😭😭Life saver.. Perfect timing.. Thank you sir

@MlungisiNkosi

3 жыл бұрын

You're welcome

You helped me for physics final and now ur helping me for the chemistry final (which I write tomorrow 😵) thank you so much!!!🤩

@marypoppins9318

2 жыл бұрын

Same lol

Thank you so much Mr Nkosi, with your efforts we believe.....

@MlungisiNkosi

3 жыл бұрын

You're welcome Ofentse

Keep doing the good work sir, this is very helpful as I prepare for the final exams❤

hi sir. what is the function of that burette?

sir..during neutralisation..are there any limiting and exceess reagent ..

Thank You So Much Sir. Your Efforts Are Really Appreciated.

@MlungisiNkosi

3 жыл бұрын

You're most welcome Okuhle

You're life saver Mr Nkosi, please keep them coming

@MlungisiNkosi

3 жыл бұрын

You're welcome. I will most definitely 😊

Are we allowed to use ratio when we have concentration

Hi sir when we write down the equations in an exam.Is it still right if we write down the arrow of the reaction without it being reversible like you didn

I don’t understand the whole of question 8 on 8.1 on how you were working out the reactants it’s quite confusing. Is the any basic topic I can refer to and then come back to how you came about working all the reactants?

@MlungisiNkosi

2 жыл бұрын

Yes… Please check out the Playlist on Stoichiometry.

For the last question I used stoichiometry by using the mole ratio of H2SO4 and KOH then I calculated the no. of moles of KOH and used this to find the volume in dm3.

@MlungisiNkosi

2 жыл бұрын

That works very well 👌🏾

Thanks Malume for the lessons 🤟🏼📚❤️

@MlungisiNkosi

Ай бұрын

My pleasure!

Thank you so much. You make every lesson easy

@MlungisiNkosi

3 жыл бұрын

You're welcome Zanele

You really helping me as I'm about to write my finals thank you 🙏

@MlungisiNkosi

2 жыл бұрын

Super... I'm so grateful to hear that 😊

Very helpful video,,,, big thank you sir 🙏❤️

@MlungisiNkosi

3 жыл бұрын

You're most welcome

Thank you for your help, we would appreciate if you would make a video on auto-ionisation of water.

@MlungisiNkosi

2 жыл бұрын

I did touch on it a bit to explain Kw on acids and bases. Great suggestion nonetheless

You are the best sir

At 31:40, is it correct if H2SO4 could be broken down to: H2SO4➡H3O+ + HSO4- ? then we can the calculate the pH...

@keathonlincoln9814

5 ай бұрын

nope, H2SO4 is diprotic. So it always donates 2 Hydrogens unless stated otherwise

Please help us with maths. Namely, trigonometry, euclidean geometry (part 2), financial maths and probability

@MlungisiNkosi

2 жыл бұрын

I wish you could've joined my online classes this past week. You may still join for the month though. Please send an email to info@mlungisinkosi.co.za

At the last question you can also calculat the percentage purity then minus it from 100%, what remains will be your percentage impurity

@MlungisiNkosi

11 ай бұрын

Correct ✅

@MamudulaGhatsheni-vh1ms

9 ай бұрын

Why should we minus the impure and pure mass?

Why do we change colume to Dm cubed if both volumes are in the same unit which is cm cubed?

@AndiswaShongwe-xm3fh

10 ай бұрын

Volume *

Right in time 💃🏻thank u for deliverying

@MlungisiNkosi

3 жыл бұрын

Call me Mr Delivery 😂

@magautaraphahlelo9384

3 жыл бұрын

🤣🤣🤣🤣🤣🤣Ubereats

Sir why didn't you round off the value? 17:02

Sir I used the pure mass percentage then minused it from a 100 and got the same answer is that okay to do??

@MlungisiNkosi

Жыл бұрын

That’s perfect

I'm confident to walk on my chemistry exam tmr morning first thing

@MlungisiNkosi

2 ай бұрын

I’m quite sure that you’ll do well…

Just on time thank you so much ✨

@MlungisiNkosi

3 жыл бұрын

You are so welcome

Siyabonga. Helpful

YOUR HELP IS HIGHLY APPRECIATED .

@MlungisiNkosi

3 жыл бұрын

It is y absolute pleasure.

What if the ratio was 2:1 what would be the number of moles of the weak acid?????

@MlungisiNkosi

Жыл бұрын

You would use the ratio to find the moles

Sir at 1:15:47 why can’t we use the mass of 0.4 to get moles

@MlungisiNkosi

2 жыл бұрын

Because not all of the 0.4 grams is pure... The pure amount is the one that will participate in the reaction.

Good day sir If u Said for 7.4) poH =-log(OH) =-log(0.11) =0.9586 PH +poH =14 PH=14-0,9586 PH =13.04

@MlungisiNkosi

2 жыл бұрын

Perfect 🤩

Thank u sir! Why did I've see this page now. Sir you don't say in class u have a youtube channel ! But thank u so much

@MlungisiNkosi

3 жыл бұрын

I did... Perhaps you were not there.

Why did we subtract the pure mass from impure whereas from Rates we dont subtract ?Is it treated differently?

@MlungisiNkosi

9 ай бұрын

The nature of the question required it…

@MamudulaGhatsheni-vh1ms

9 ай бұрын

@@MlungisiNkosi Can you make me understand because I don't or is it because not all of the mass is bieng titrated hence you substruct?From the impure since since some in the impure is pure ?

Thank you sir

Thank you.

@MlungisiNkosi

3 жыл бұрын

Wola MaZ

Malume Mlungisi would I be wrong for 8.1 if I say Ph=-log[2H3O]?

@MlungisiNkosi

9 ай бұрын

Yes it would be incorrect

- I'm still stuck on calculating the percentage of ethanoic in the vinegar 😭😭💔 I tried rewinding but still... 😪

@MlungisiNkosi

Жыл бұрын

It is not an easy question this

@oneyy6165

Жыл бұрын

That was a very tricky question 😂

this is ✨

@MlungisiNkosi

3 жыл бұрын

Awesome... I'm glad you found it helpful

Thank you so much

@MlungisiNkosi

3 жыл бұрын

You're most welcome. All the best for your exam tomorrow

16:58 sir i got number of moles as 3.3135x10^-3. is that correct or what?

@MlungisiNkosi

2 жыл бұрын

I think that’s fine

@ian_sambo04

2 жыл бұрын

@@MlungisiNkosi thank you sir.

Oh so hydrolysis falls under the lowry bronstead theory?

@MlungisiNkosi

Жыл бұрын

Yes it does

Heyyy can you please do a review of organic molecules before tomorrows paper

@MlungisiNkosi

3 жыл бұрын

I will do that soon

Hi! Great video😊 i would like to ask, at the time stamp of 30:05. Why didnt you round off your answer to 10,03% as it said so on the calculator, and dont the marking guidelines instruct that final answers should be rounded of to TWO DECIMAL places? Hope to hear soon What a great video 😍

@MlungisiNkosi

Жыл бұрын

You’re right… Yes I should’ve neh.

Life saver

@MlungisiNkosi

3 жыл бұрын

You are most welcome

Sir do you have a video for Ka and Kb❤

@MlungisiNkosi

2 жыл бұрын

Not yet… I will record it

5.35 let say it's an acid that's strong and base is weak how it'll be?

@MlungisiNkosi

Жыл бұрын

Please check under acids and bases, I covered that scenario already

Sir plz fix the issue of the camera 😭😭😖we can't see the clearly

@MlungisiNkosi

Жыл бұрын

This was recorded back in 2020 when I didn't have fancier equipment. Askies neh

❤️

@MlungisiNkosi

2 жыл бұрын

That favourite heart ❤️

Meneer can you please try if you have some time to touch Doppler Effect and Rate and extent of reaction

@MlungisiNkosi

3 жыл бұрын

I've already covered Doppler Effect. Rate of Reaction is coming up next

@Roberto97810

3 жыл бұрын

@@MlungisiNkosi Dankie meneer big love for you sir

@MlungisiNkosi

3 жыл бұрын

@@Roberto97810 thank you

Sir can you please do Question 7 the chemical equilibrium questions 49:00

can you do Question 7 physical science p2 September 2020 Eastern Cape

@MlungisiNkosi

Жыл бұрын

Noted

Eiii sir , can you also open a maths channel

@MlungisiNkosi

2 жыл бұрын

Will do...

Thanks you sir but i can't see clearly 🙏🙏

@MlungisiNkosi

3 жыл бұрын

Sorry for that... Try to play the video at a higher resolution.

shout out to those writing this tomorrow🤣🤣

@MlungisiNkosi

Жыл бұрын

Woop Woop 🙌🏾

sad for me just saw the video now at 11:30

@MlungisiNkosi

3 жыл бұрын

You're on time... 😊

@kiaranandkumar7726

3 жыл бұрын

Me at 2:27am 💀😂💔

@tshifhiwanems29

2 жыл бұрын

@@kiaranandkumar7726 me at 04:37

I wish I found you earlier 😩

@MlungisiNkosi

2 жыл бұрын

Thank you for joining us eventually...

Ur camera sir 😭

@MlungisiNkosi

Жыл бұрын

Askies what’s wrong?

@mahlatseagnes1534

Жыл бұрын

@@MlungisiNkosi I cnt see...plz fix de issue of camera