Quantitative aspects of Chemical Change Stoichiometry Introduction

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Stoichiometry grade 10 introduction! The maths of Chemistry :D Learn more math and science with me.
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In this video we look at the topic in grade 10 physical sciences that they call "the quantitative aspects of chemical change" or stoichiometry! I love this section and I hope you do too!
#chemistry #stoichiometry #grade10 #physicalsciences

[@missmartinsmathsscience]

My apologies everyone at 13:56 I made a mistake because I took the Atomic mass number for sulfur to be 12 but that is TOTALLY the Atomic mass number for Carbon 👀😢 my humblest apologies! ❤️ The molar mass (M) for MgSO4 is therefore 120 (NOT 100). As a result the number of mols (n) is 0,083333 mols.
As a result when you use the next formula, big N (number of MgSO4 molecules) will be 5,0166666 x 10^22 (to the power of 22). Therefore the number of oxygen atoms will be 5,0166666 x 10^22 x 4 which is equal to 2,01 x 10^23 oxygen atoms.
So the method still stays exactly the same ❤ please learn from my silly mistake and never assume you know the Atomic mass, always look it up on the periodic table to make 100% certain 🎉❤

[@tlotlo235]

Mam why is the big N of MgSO4 5, 0166666 ×10^22 whereas in the calculator is 4,9966×10^23 giving me the final answer of 1, 99864×10^23 after multiplying by 4?❤

[@iloveintersteallarha4664]

samee thing with my calculator did u figure out what you did wrong ?
@@tlotlo235

[@user-dm4vi5rz5r]

Thank you so much ❤

[@brianmusekwa3682]

Thanks to u ma'am I'm to write with understanding

[@phologokekana1019]

​@@tlotlo235 I had a similar problem,so your not supposed to round off Ur (n) number of moles, when U are doing your calculations

[@nkaDnD]

Watching this video exactly a year later ❤😂

[@BoipeloMmatlwa]

Mami u are definitely underrated 😢u are the best teacher in physics❤we appreciate your efforts

[@simomoses-le2cg]

Criminally underrated

[@isabellaaiken7469]

I really appreciate you ma'am.Sending my love from the Eastern Cape❤May God continue to bless you and your family abundantly.

[@classydisplays]

I'm an A student but recently I skipped one class of physics this helped me catch up tsm ❤

[@user-eu5dg8gy3k]

One of the best physics teacher

[@missmartinsmathsscience]

Thank you!

[@SbahleDube]

And you just restored my hope in ever understanding quantitative aspects of chemical change, the thing literally made my life difficult in chemistry last year. Thank you so much, you're highly appreciated🩶🙏🏼

[@missmartinsmathsscience]

I'm so glad! :D I will be posting a lot more on this topic in term 3!

[@RelebohileThapeli]

🥺thank you mam, just when I thought I was gonna leave out the question regarding this topic because I didn't understand😊 ❤you're indeed a life saver🎉

[@missmartinsmathsscience]

Such a big pleasure! I am so happy to help you ace your exams

[@tshiamotladi7349]

I'm writing a test today and this helped me to understand the formulas thank you so much

[@missmartinsmathsscience]

I am so glad that it helped!

[@vloggervibez9317]

Ma'am when I divide 0.2 and 22.4 it gives me a different answer that is in scientific notation

[@jennife._rr]

Same

[@Precious.K.1]

Same .

[@robertsechele438]

Thank you ma’am you really clarified this topic for me because I was totally lost in class ❤

[@missmartinsmathsscience]

Such a pleasure :)

[@user-np6qu3fp8z]

Thank you so much.
I was a bit worried about this topic but now I am actually a enjoying it and will definitely keep following for more .😊👌

[@missmartinsmathsscience]

Glad it was helpful! :D

[@NamoliNtuli]

Wow thank you mam!!🥺❤️you the best🧸

[@vutlharimbhiza1115]

Thank you so much

[@user-ss6pd9tt4r]

Thank you so much for the help mam❤ 🎉

[@missmartinsmathsscience]

My pleasure 😊

[@tutoringwithshane]

Hi mam i think you made a mistake somewhere by 14:00 because sulfur is 32??

[@missmartinsmathsscience]

Please see my pinned comment ❤

[@bigsistershelpinghand1279]

thank you so much!!

[@missmartinsmathsscience]

My pleasure 💛

[@user-dm4vi5rz5r]

Hy mama thank you so much on the example using the formula n=N÷NA you wrote that the molar mass of MgSO4 is equal to 100 how? Plz help me mam

[@mandisiyaca4235]

mistake, it should be 120g.mol-1

[@Callmechelseaa27]

Hiii Maam do you mind doing a video on water of crystallization grade 10

[@joshuaaugust5647]

I strongly agree =

[@missmartinsmathsscience]

Yes I do!

[@emmanueltshimomola5703]

Thank soo much ❤🎉🎉❤😊

[@missmartinsmathsscience]

🩷🩷🩷

[@user-zy5cc7le8r]

I hope you find out how to put your videos in playlists, so they are easier to find.

[@missmartinsmathsscience]

My videos are in playlists

[@YamkelaMadikizela-nm8ig]

Mam how come your sulfer's atomic no is 12 but mine is 32

[@mbekademase4199]

Is it possible to write our answers in scientific notation.

[@mbongenipshange4414]

From Avogadro's number 6.022 ×10 what if it's 2 mol does Avogadro's Number Change?

[@caydiess]

Thank you so much for all these videos😭🫶🏻 i feel super confident!

[@missmartinsmathsscience]

You got this! I believe in you :D

[@mulondololo9297]

Thank you mam❤❤

[@missmartinsmathsscience]

Most welcome 😊

[@JusticeM-d6g]

How did you get Na

[@user-iw5qq1ls1y]

Im still abit confused😅 but i understand way better then class😅

[@missmartinsmathsscience]

What can I still help with? I have smaller videos that go over each formula in more detail. Check out the playlist :D

[@LethaboDitlhokwe]

I might be a bit late but how is the molar mass of Sulfur 12 ?

[@missmartinsmathsscience]

I wrote a pinned comment correcting myself

[@vloggervibez9317]

May you please do past papers in this topic please❤

[@vloggervibez9317]

For grade 10

[@infinitygamer9128]

i commented yayyyyyyyy!!!!!!!!!!!!!!!!!!!!!!!!

[@user-ot6ln4bv8j]

I think you made a mistake where you said atomic mass of sulfate was 12

[@missmartinsmathsscience]

I know I did mention this in my pinned comment

[@user-xp1yw7tn8s]

22:44 there is a mistake

[@missmartinsmathsscience]

There is no mistake at that time.

[@ShivastiSingh]

​@@missmartinsmathsscience0.2÷ 22.4 = 8.91×10^-3 when I entered it in the calculator..what do I do?

[@williamhachem4033]

@@ShivastiSinghwhat?

[@vloggervibez9317]

​@@ShivastiSinghI got the same answer

[@QuintonD2006]

Suiiiii

[@ThandekaMahlangu-fs1tx]

Your students are lucky.🥹🥹🥹