Chemistry | Fertiliser industry | NPK Calculations | Mlungisi Nkosi

[@supplies4reptiles228]

best explanation i think on you tube ,pls advise how to calculate the bracket number if not provided... of a 19.14.29

[@MlungisiNkosi]

Thank you 😊 But please don’t worry about this section. It’s not examinable if you’re writing the South African curriculum

[@vicco.6805]

I needed this last week

[@MlungisiNkosi]

Askies, it’s here now…

[@boipelosalome7209]

Mr i haven't watched this topic as yet because want to understand ,The exam guideline changes from year to year, my question is which exam guideline are they using for May-June exams?( upgrading) please help me out because there's another part of organic chemistry that was not in the exam guideline last year.

[@boipelosalome7209]

The one of plastic and polymer nton nton.

[@MlungisiNkosi]

This will not be examinable for May/June exams

[@MlungisiNkosi]

This is not examinable this June

[@thobilemasoka6655]

Thank God! Been praying that you cover this chapter 🙏😂😂❤️❤️

[@MlungisiNkosi]

It was covered a while back, I just published it now after much pressure

[@thobilemasoka6655]

@@MlungisiNkosi okay bhutwami thanx ❤️🙏

[@AlteredGamersSA]

Hi Mlungisi! I love your channel! Your way of explaining makes things is alot easier to understand than the teachers I had 25 years ago! My problem was i did chem and organ chem back in school but did nothing related to any fertilisers :( I dont think the SA farmers wanted their secrets shared ;) lol I was wondering if you could help me work out a fertilizer with an NPK of 3-1-1? The macro nutrients i need to use are: (They are all in powder form and I need to keep them like that) Magnesium sulfate, Potassium nitrate, Ammonium phosphate monobasic and ammonium nitrate. Your help would mean a lot!

[@MlungisiNkosi]

What is the total mass of fertiliser you want to make?

[@AlteredGamersSA]

@@MlungisiNkosi 1kg :)

[@victormukehvandi2145]

How do get the 20%

[@rosariaamutenya7317]

This is great

[@MlungisiNkosi]

Please skip this section

[@bonanimbizweni2757]

We missed you on Physics side sir ❤️❤️

[@MlungisiNkosi]

I made this last year… I thought I’d publish it for those who kept requesting.

[@bonanimbizweni2757]

@@MlungisiNkosi thank you sir. We probably should get you more people bcz we're indeed benefiting from you 🙏

[@MlungisiNkosi]

@@bonanimbizweni2757 I love the idea of people’s destinies changing because they came across this channel. Please do bring them 😌

[@jasonpeterson8524]

Mr I have learned everything about photo electric effect but then I came across a question calculating the maximum wavelength in May June 2017 n I'm struggling to figure it out I went to the answer sheet to see how it's done but I'm still struggling a bit please if you don't mind I need help I'm just scared they ask a similar question again n i still don't know how it's done

[@MlungisiNkosi]

Get the threshold frequency first and use the f=c/y equation

[@nikkopat]

For example, in every bag or container of fertilizer. The 40% NPK in 12kg is always located at the nutrient composition/Table? So the other 60% is also in the Table?

[@MlungisiNkosi]

No… it’s not necessary

[@petrussehlabi6242]

I also need I want to understand if this topic still on or ? I don't see it on the question papers I'm busy with

[@elsalombard3549]

This topic is no longer assessed in the CAPS.

[@AD-hr4xf]

Sir is this still in the syllabus, will it be in the supplementary because last year they removed it

[@MlungisiNkosi]

No it won’t be. I just got tired of explaining and made it available for people who want it

[@AD-hr4xf]

@@MlungisiNkosi haii sir😂🤣🤣🤣

[@MlungisiNkosi]

@@AD-hr4xf I know 🤣

[@AD-hr4xf]

@@MlungisiNkosi sir let's not talk about P2 maths😂😂😂😂

[@vyberusso2501]

What if my npk is n 5 p 6 k 6 And I’m using 5 ml in a gallon of water. what percentage of Nitrogen is in the gallon of water ? Do I say 5 % * 5ml = 25 % of nitrogen in a gallon of water.

[@forger9443]

If I understand correctly, your country's labelling system of 5:3:4 (24) IS NOT THE SAME as an internationally available bag labelled 5:3:4 without that filler number?

[@elsalombard3549]

You are correct. The above grades are for elemental P and K and not P2O5 and K2O.

[@mahlatsemashabane5269]

Sir I am still waiting for you to release a video on stoichiometry

[@MlungisiNkosi]

Please check on the playlist. There’s 4 videos on Stoichiometry

[@mahlatsemashabane5269]

Thanks sir they are for grade 12 right ✅

[@unclesam43]

Mr Nkosi, I'm currently upgrading and last year this topic was cut off so I'm enquiring If I'll need to study this topic as I'll be writing by November?

[@MlungisiNkosi]

I’ll verify that for you.

[@unclesam43]

@@MlungisiNkosi Thank Sir,I'll wait

[@AD-hr4xf]

no it's not in the Supplementaries

[@unclesam43]

Thank you

[@barhleee1749]

Hi sir will this topic be examined in November?

[@MlungisiNkosi]

No it won’t…

[@barhleee1749]

@@MlungisiNkosi thank you sir

[@lindiweangel1753]

NPK fertilisers on maize?

[@MlungisiNkosi]

This section has been trimmed out for now

[@mahdiammar5862]

Perfect

[@lethabozwane3266]

Please start with exponential and logarithmic functions... its giving me a problem

[@MlungisiNkosi]

It will come

[@blessingosato3057]

Thanks sir

[@johnnekoto1804]

what if the percentage is not given

[@MlungisiNkosi]

I’ll show you in a future video

[@gulabkapaudharosegardening6646]

Plz make 3 20 20 npk

[@composur3720]

Question 4:1:3 (24) +0.5% Zn Calculate the amount of NPK in kg

[@MlungisiNkosi]

Try it and tell me what your answer is

[@adebayojoshua1934]

P=0.96kg K=2.4kg

[@thatobhengu6517]

Thanks

[@MlungisiNkosi]

You’re welcome

[@MlungisiNkosi]

You’re welcome

[@nhlakaaa7048]

Thank you for the awesome video.... Is it going to be tested for November?

[@LwaluhleMzobe-rh3kh]

the mass of k is 2.4kg