Exam Rate Of Reactions Grade 12 Do you need more videos? I have a complete online course with way more content. Click here: purchase.kevin... 🟢Follow me on Instagram: / kevinmathscience
Am i the only one who studies everything using Kevin's videos before the teacher even introduces everything?but still get straight level 7s?😂😂#kevinforpresident
I’m gland that I found this amazing teacher when I was in hard times in grade 11 2023 and I’m still stuck on him 2024 in grade 12 and I’m always getting higher marks ❤❤
We are looking for the mass of CO3 so that we can calculate time blah blah blah, but at the same time we don't know the number of moles of CO3 but we are told the mass of MgCO3, can you notice that, that MgCO3 is on the balanced equation? We can use it to find the number of moles of CO3 by calculating its moles first then use moles ratio to find moles of CO3....so we are using MgCO3 because we are told about its mass, this means that if we were told about anything on the balanced equation besides MgCO3, we were gonna use it...USE WHAT YOU ARE GIVEN
Regarding the Maxwell Boltzmann curve. If the temperature is decreased the curve shifts to the left. This would result in a decrease in the area under the curve if the peak of the curve remains the same. Note the area under the curve represents the total average kinetic enegry of particles. Therefore in order for the area under the curve to be the same - the peak must increase to allow for the total average kinetic energy to be the same. Remember energy must be conserved due to the energy conservation principle. Also the peak would increase since more particles would have a KE closer to the average kinetic energy which is the peak. Because the standard deviation would be lowwer. Just some statistics knowledge. Math is useful for science guys. And to have the same number of molecules/particles your peak would have to be higher. Since the curve is narrowing and the peak remains the same it would mean there's less molecules/particles.
the 0,5 is 0,5g.min^-1 which is reaction rate. the 0,0595 is the amount of moles of CO2 used. He had to use the moles (0,0595) because of the formula n = V/Vm
Prove you watching this before the day you write your prelims Exam tomorrow 😭
Tomorrow im writing😂
😭Eish
O slege u right😂😂😂😭
Yebanna😂😂😂😂
and i still have organic chem to cover 😭😭
It took Kevin 9 minutes to finally give us the answer😭😭
not me tryin to watch all the videos to make up for tommorow😂
Same😭
Same😭
😂😂😂
Same😢
Come on the teacher is calling me 😭😭
Not me coming here the day before my exam
Am i the only one who studies everything using Kevin's videos before the teacher even introduces everything?but still get straight level 7s?😂😂#kevinforpresident
u the only one
Hey mr Kevin. May you please make more videos on this topic
Thank you sir , please do 1 hour videos for each topic like you did for organic chemistry
Effective collision 🤣😁 I like how you explained that
😂
hello kevin!
please do more videos on this topic or add more questions
Don't worry ur not alone😭😭😭😭😂😂
😅😅
Shout out to kevin😭🫵
Here the day before exams 🤣🤣😭😭
😂For reasons that goes way beyond grade 12 level
Guys who else is studying before term 2 😅
😂 here
Me 2 hours before the test.😭
Literally writing in a few hours 😢, which me luck
Bafethu lets stop this thing of studying seriously the day before the exam🤣🤣🤣🤣🤣🤣
Not me writing in few hours 😂😂😂
@@acronmthembu 😭
No 👀
I will always suffer
@@JayKSin this is me rn again😭😭😭
@@JayKSin 😭😭😭3 hours left dawg and you were studying question 5 content??
I’m gland that I found this amazing teacher when I was in hard times in grade 11 2023 and I’m still stuck on him 2024 in grade 12 and I’m always getting higher marks ❤❤
Writing on Monday😭✋️
"my bro, my home dog" killed me 💀
Bro is casually making jokes while I study for my life😂
Bru said I must wait
Kelvin you are really sent from heaven 🙌🙌🙌
Writing tomorrow so anxious😢😢😢😢
gosh why am I here the day before my exam again
🤣🤣🤣🤣not you, calming yourself down
writing in 3 hours I'm cooked😭
Bruh😭
Writing tomorrow 😭😭
How did u write
Ehhh phukie 🤣🤣🤣🤣
@@gundomunyai8955 Ariana what are you doing here? 😭😭😭😭
@@NtaraNtara-gp3dz it was something else. i can only hope for the best. 😬
AM I COOKED?
Same😢
Real
we all are
Writing in few hours an this is new to me
Same😭
real
how did u do
Writing tomorrow I know I'm gonna fail just gonna try get code 4 minimum 3😅
how did it go?
Im cooked tomorrow 😭
Same dawg🙏😭
@@slasher4642 time paper 1 chowed 😭
Im only starting now...its 23: 42pm
Really helpful, thanks Kevin ❤ you're highly appreciated
Thank you so much for this video. It really helped.❤❤
was kinda sus
Life sciences messed up my mind 😭😭😅😅 6:33
ME TOO
THATS WHAT IM SAYIN😭😭💀
@@Tory442 why are we here 11 hours before we write 😭
@@Sapphire_Stallion a lot is going on 😭😭 last push bro
@@Sapphire_Stallionyou mean 7 hour's 😂
Its Chai aint it
Does anyone know why at 19:01 he uses CO2 instead of HCl
We are looking for the mass of CO3 so that we can calculate time blah blah blah, but at the same time we don't know the number of moles of CO3 but we are told the mass of MgCO3, can you notice that, that MgCO3 is on the balanced equation? We can use it to find the number of moles of CO3 by calculating its moles first then use moles ratio to find moles of CO3....so we are using MgCO3 because we are told about its mass, this means that if we were told about anything on the balanced equation besides MgCO3, we were gonna use it...USE WHAT YOU ARE GIVEN
How are u tony😂
I'm very good u 😂😂😂
kevin for question 5.4.1, why did we calculate the time in accordance to the CO2 gas produced?
Regarding the Maxwell Boltzmann curve. If the temperature is decreased the curve shifts to the left. This would result in a decrease in the area under the curve if the peak of the curve remains the same. Note the area under the curve represents the total average kinetic enegry of particles. Therefore in order for the area under the curve to be the same - the peak must increase to allow for the total average kinetic energy to be the same. Remember energy must be conserved due to the energy conservation principle.
Also the peak would increase since more particles would have a KE closer to the average kinetic energy which is the peak. Because the standard deviation would be lowwer. Just some statistics knowledge. Math is useful for science guys.
And to have the same number of molecules/particles your peak would have to be higher. Since the curve is narrowing and the peak remains the same it would mean there's less molecules/particles.
For the collision theory questions [4 marks] does the order of our points matter?
Kevin 5.4.1 you needed to calculate the time at completion which is 43°=0,6g•min^-1 instead you calculated the time at 40°
Yoh Kevin I think you need the chill pill 😂relax broo
Ws in the chaaat!!!!!😂🔥
Could you please make more videos on this topic, they really help
Now I understand collisions
kevin you the GOAT !
why are we using 0,0595 instead of 0,5 since we're at 40° 23:54
the 0,5 is 0,5g.min^-1 which is reaction rate. the 0,0595 is the amount of moles of CO2 used. He had to use the moles (0,0595) because of the formula n = V/Vm