If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

Good luck to those doing chemistry tomorrow!!

@kirki221

Жыл бұрын

Thank you, I'm gonna fail😭

@nadiakwaramba7246

Жыл бұрын

tysm i need it fr😭

@yoheilam6979

Жыл бұрын

I'm having it tmr lmao

@MinaAte

10 ай бұрын

@@kirki221did you fail?

@breakingcomps

9 ай бұрын

did u fail?@@kirki221

Simple. To the point. No messing around. Best video I've seen on RFM.

Doing some revision video searching as this way of learning is always the best for me and so glad I found your channel! Your videos are so clear and easy to understand, especially with your helpful diagrams and images. You definitely deserve some more subscribers :)

@Cognitoedu

4 жыл бұрын

Hi Lottie thanks so much for the kind comments! Really happy that you find them useful!

@Emzy17

2 жыл бұрын

And I also want to say I had my chem mock today and your videos help me so much..your a lifesaver thank you

Just got 3 questions on exactly what this video was talking about, My goodness this guy is good, definitely subbed

@jeshlynanjotheballer

2 жыл бұрын

😁

I actually finally understand. THANK YOU!!!

@Cognitoedu

4 жыл бұрын

Haha thanks Kim! Relative formula mass is a bit of a weird one to get your head around, so really happy to hear this was helpful 😇

@ArmouredCat

3 жыл бұрын

No problem

@thesciencegenius1237

3 жыл бұрын

Me too!

@MOHAMMAD_I572

3 жыл бұрын

Me too

@kingjarif6822

3 жыл бұрын

@@Cognitoedu its easy

So beneficial, thank you for your simplicity and clarity

@Cognitoedu

5 жыл бұрын

Hi Ahmad, really happy to hear you found it useful. Thanks for taking the time to comment, it really helps us out :)

Love the simplicity in this video, so much easier. Thanks!

You saved me, tysm for thiss.. Stay safe and strong, good luck for your channel. All the best man, you're great!

Thank you! You weren't too fast or too slow. You went at the right pace.

This is the one stop tutorial guys so if u donno or find Mr mass finding hard its really simple with his explanation.... thx a lot

This video is AmAzing. Couldn't really get my head around it when my teacher taught this... Thanks alot

You wouldn't imagine how could this helped me out!!! I really thank you by my heart!!

There were so many moments where I went "OHHHHHHH I GET IT NOWWW" Thank you

@Cognitoedu

2 жыл бұрын

Really happy to hear it!

your video is very easy to understand ! thank you !!

this helped me out so much. thank you!

THANK YOU SO MUCH THIS VIDEO WAS VER HELPFUL!!!

Amazing explanation. Understood really well!!

Great video. Loved it !

Another great and simple explanation, thank you.

thank you so much!! you explained it so well

Good video, helped a lot!

Been having mock CAE's recently, Your videos have been so helpful i thank you so so much Was super super confident in my chemistry and biology thans to you!! Physics next week :)

is the relative molecular mass the same ?in my spec (for igcse) it says calculate the relative formula masses(including relative molecular masses) from felative atomic mass

Man! Cant express my gratitude to you

@Cognitoedu

3 жыл бұрын

Thanks farida!!!

This channel is so useful I love the diagrams thankyou this helped so much

@Cognitoedu

3 жыл бұрын

Thanks, glad you're finding the animations helpful 😊

this is so helpful thanks a lot

Hello there! I just wanted to ask if this is the same as relative atomic mass (with Isotopes)?

you are the best man

his voice sets me at ease for somereason

youre a living legend

hi HEY! i finally understood thanks to you! my teacher did explain it but i didnt get it but thanks to YOU!!!

your channel intro is so satisfiying jees

I never said thank you to you mate, you're awesome

Bro you made it so simple thank you I have chemistry test tommorow

Hey for the the last question when it said 74 where did you get that from?

thank you for the A+ in my chem exam !!!

How do I do this topic since it doesnt show (in your website)

Thank it really helped me out I was looking at my region guide and I still didn’t get it it but thanks to u I appreciate that a lot

@Cognitoedu

4 жыл бұрын

Hi Maariya! Thanks for the comment, and really happy to hear it helped you! Good luck with all your work 🙌

@maariyaahmed8421

4 жыл бұрын

Thank you

LIFESAVER. THANK YOU.

Your a legend thank you so much 👏🏻👏🏻

@Cognitoedu

2 жыл бұрын

No problem 👍

great as always

i still dont really understand. I tried to do the last one with the oxygen by myself so i could just check the answer later to see if i understood, but i accidently used proton number in each element, after i got the answer i understood that and redid it. With relative atomic mass i got 43.8%, and the answers when i used with proton numbers where almost similar, the one with proton numbers was 43,2%, which is the correct answer as the video says. So what method should i use exactly? Does one decimal means anything or i could just use any of those two methods and leave the decimal behind?

Soo underated!

Whys it gotta get so complicated so damn quickly?! I still don't understand even after watching this video. which is uncommon for me

@NextGeneration_21

2 ай бұрын

@@SajjadAli-er4fh yeah this was long ago, i actually get it now XD

Thank you for this

Does the critical temperature increase as the relative formula mass increases?

Thank you so much .I was so confused and worried about my exam 💗

@Cognitoedu

3 жыл бұрын

Glad we could help HHA, good luck 🤞

This guy deserves an award or something your gonna save me from my cies❣

@Cognitoedu

3 жыл бұрын

Aah thanks Naseem, good luck with your cies 🙏

Do you have a video covering empirical formula?

This was so helpful

Hope you reach 1 M, you really deserve as lottie said

I have understood all except the percentage bc I am confused about what I should do about the (32×1)/98

in the definition of finding the relative formula mass did you mean to write: add together the relative atomic mass of all the elements in that compounds molecular formula?

THIS saved my life!!!!!!!

@Cognitoedu

3 жыл бұрын

YAY 🙌

Already on 1K Subs.

Hello! What if we have something like 2H20?

May Allah grant you peace and wealth, your videos are very helpful to anybody who comes across them!

@NextGeneration_21

7 ай бұрын

ameen

@yahyashrief2912

5 ай бұрын

Amen ya rab alalamen

Tq so so so much

holy i understand chemistry THANK U DEFFO SUBBED

@Cognitoedu

2 жыл бұрын

🙌 🙌

OMG!! thank you so much!! I have a chemistry test on this in a week and this defo helped me out!! :DD

@Cognitoedu

2 жыл бұрын

Ah so glad we could help, all the best with your test! 🤞

Question here👋 is molecular mass measured in grams or no unit?

Can you make a video on molecular and empirical formulae please

tysm

I don’t seem to understand this part 0:50

Thanksss bro 💯🔥💪👍🙌👏🏅🥇🏆🌟🙏👏💰💰💰😁🙏👏

Thanks bro

You explain better than my teacherrr

@rubyreadal6607

3 жыл бұрын

whyd ya only get 1 like but another person who said the exact same thing got 150

Nice vid

Thanks

Thx you i finally understand what i thought was gibberish

@rubyreadal6607

3 жыл бұрын

wait i confused again

I got chemistry mock paper 1 tommorow and I am trying to revise as much as I can to get moved to higher

😂 where’s my year 11’s at good luck for us guys 💔

@NextGeneration_21

7 ай бұрын

bro my exams are like next week 😪😔

I love you cognito so much

excuse me, how are you, what is the RFM of 0.3 g of oxygen and volume of 224cm cubic

thanks

love itttttttt

So helpful thank you, my teachers are useless

i hate hate hate science🙄✋ur videos get me through it tho thanks 🏃‍♀️

Ar vs Mr which one is it? i got taught in skool that it was Ar

Thank you . I might not pass but at least great relative formulas correct

@0charlie_irl

2 ай бұрын

so true lol

@0charlie_irl

2 ай бұрын

goodluck tmr

God Bless your mother

Cuz this much knowledge cannot be explained by a mortal human

thank you so much for this, hopefully i do well in my exam tomorrow. wish me luck :(

@frosted_slime4130

2 жыл бұрын

hyh\jp;

❤

My gsce biology teacher uses these videos in everyone one of his lessons shout out big man T 😂😂

Zoo wee mama

what are iscotopes

@jaiden4775

3 жыл бұрын

There’s one element but 2 different numbers of neutrons

@rubyreadal6607

3 жыл бұрын

@@jaiden4775 ok thx so much

i think you made a mistake at 1:55, 32+1+64 is 97, not 98.

@Cognitoedu

3 жыл бұрын

Thanks for the feedback! I think you might be missing the second hydrogen in your workings?

@omar.t975

3 жыл бұрын

@@Cognitoedu ohhh yes, sorry my mistake 🤦‍♂️🤦‍♂️😅

@An0r1

3 жыл бұрын

@@omar.t975😂

the video image is too poor, you need to fix it more

@Cognitoedu

2 жыл бұрын

Is you’re video quality setting turned down?

At 3:19 I believe a mistake is made. It should be 16 + 1 (Oxygen + Hydrogen) which equals 17 (the relative formula mass for OH i.e. Hydroxide). Then 17 is multiplied by 2 as there are 2 hydroxide molecules present which equals 34.

@marceledeko6030

2 жыл бұрын

nope cuz we r looking for the mass in oxygen not in hydrogen and oxygen

Why is no one liking ???

@Cognitoedu

5 жыл бұрын

I reckon they're just playing it cool...

@mikewazowskigaming3029

3 жыл бұрын

There being in COGNITO

@nabeelahmed4862

3 жыл бұрын

@@mikewazowskigaming3029 They are being in cognito but good joke man

@mikewazowskigaming3029

3 жыл бұрын

@nabeel thanks man!

i hate quantitative chemistry

Tomorrow’s my chem. exam Help!😢

Shudahekup

@ashk6023

Жыл бұрын

Who asked?

@humanbill6102

Жыл бұрын

@@ashk6023 bri edited his response

@ashk6023

Жыл бұрын

@@humanbill6102 who asked?

@ashk6023

Жыл бұрын

im jk dont take personally

open a school man\

Who else thinks he is a bot or an ai

@kashafabbas5068

6 ай бұрын

Cuz this much knowledge cannot be explained by a mortal human

tysm i used this to revise for my end of years

you got 1 kilogram subscribers in a day wow!

What is going on here?

@Cognitoedu

5 жыл бұрын

No way... science content too? Great minds think alike ^^