Chemistry | Fertiliser industry | NPK Calculations | Mlungisi Nkosi

How to calculate percentage presence of Primary nutrients in fertilisers? Well, this simple lesson will answer that and more... You will also be able to calculate the mass of each nutrient in fertilisers.

[@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

[@vicco.6805]

I needed this last week

[@MlungisiNkosi]

Askies, it’s here now…

[@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 ❤️🙏

[@mahdiammar5862]

Perfect

[@blessingosato3057]

Thanks sir

[@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

[@rosariaamutenya7317]

This is great

[@MlungisiNkosi]

Please skip this section

[@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

[@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.

[@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%

[@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 😌

[@nhlakaaa7048]

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

[@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

[@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😂😂😂😂

[@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

[@gulabkapaudharosegardening6646]

Plz make 3 20 20 npk

[@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 ✅

[@barhleee1749]

Hi sir will this topic be examined in November?

[@MlungisiNkosi]

No it won’t…

[@barhleee1749]

@@MlungisiNkosi thank you sir

[@lethabozwane3266]

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

[@MlungisiNkosi]

It will come

[@thatobhengu6517]

Thanks

[@MlungisiNkosi]

You’re welcome

[@MlungisiNkosi]

You’re welcome

[@lindiweangel1753]

NPK fertilisers on maize?

[@MlungisiNkosi]

This section has been trimmed out for now

[@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

[@johnnekoto1804]

what if the percentage is not given

[@MlungisiNkosi]

I’ll show you in a future video

[@LwaluhleMzobe-rh3kh]

the mass of k is 2.4kg

[@D-BuilD]

Lovely 👌

[@MlungisiNkosi]

Thank you!