IGCSE Chemistry: Calculations involving Moles

[@saicharanpurushotham917]

Thanks...for your video......I think this video is better than my teachers explaination... :)

[@alooshemo619]

I got an exam tomorrow and i didn't know anything about moles now i almost got it all so really thank you, you really did help someone who didn't know anything :)

[@guulside1595]

You are gradesaver and iam actually appreciating you for the working you are doing to the young students who didn't understand these lessons while they were learning this section

[@SaphireRoseAcorn]

Thank you so much! My teacher, as nice as he is, gave the most crappiest lessons on this and I have my mocks this week and this being the hardest chem topic for me, makes this video is a prime example of what a life saver is. THANK YOU

[@becee]

my left ear enjoyed this

[@harshitagarwal212]

I loved this video. My IGCSE is tomorrow and you really saved my ass.

[@FlipoFlupa]

Harshit Agarwal my igcse is Fter tommorow

[@interestingnot2414]

today in 3 hours lol

[@charlottejunior9492]

+Harshit Agarwal what ddi you get? 😂😂

[@zainabsujain6958]

OMGG!!! Thank u so much! This has helped me so much! I hope i pass tomorrow's test! This is the best video i could find! Im so glad. Thank you sooo much!

[@bestever7881]

thank you very much...........this is very helpful......................this cleared all my doubts

[@ojamamask]

thank you so much my chemistry exam is tomorrow and I was absolutely screwed for moles questions but you just saved my life

[@angelaking9701]

Superbly explained and organised, really helpful ! thank you !!!

[@Dark69bladeAE]

The sound is not working if you are using a mobile phone to open this video.

[@x00nameless00x]

You just made my life 10 times easier haha. Thanks loads that's really helpful.

[@nada.hanahassan6596]

that was such an excellent explanation and practice 😊👍👍

[@emmanuellaasare7943]

Must you always round decimal relative atomic mass numbers from the periodic table up? In the video at 2:46 I realised that Cu (copper) had been rounded up to 64 from 63.5. Please respond anyone!!

[@jaxpax5444]

You're an absolute saint mate :D

[@therlpingul1474]

who's having their gcse's tomorrow?

[@punitvaibhavaramreddy7728]

@2:58 there are supposed to be 4 moles of hydrogen in 4 grams of hydrogen right.

[@willdeary630]

Correction: You can not 'weigh' in grams, you can have a mass in grams, or you can weigh in newtons.

[@willdeary630]

Just multiply the mass by the gravitational constant in that location, on earth aproximately 9.81 N

[@flameherohd]

Will Deary obviously kid trying to look like a smartass, but this isnt physics, and the world isnt going to start saying "Oh charlie, how much do you mass?"

[@willdeary630]

I know that won't happen, but the principle is still there. Anyway, it is quite like physics in many senses, and when it comes to calculations and portraying information properly, it in my opinion it should be done in the correct way, especially if it is from a chemistry teacher. Also, I am not a 'kid' and this is just my opinion.

[@anishkasyap9691]

Will Deary well actually you multiply with the acceleration due to gravity and to calculate that on different locations you need the grav constant. so on earth it's not 9.8 N, it's 9.8 m/s^2. I mean sheesh. if your gonna show off, might as well do it right lol.

[@abdullatifalaotaibi3048]

Perfect explanation

[@mahirsheikh3820]

Thank you soo much this helped me so much!

[@TheClawMaster_1]

Thank you for this again.

[@nooribrahim2157]

great videos though this video has got no sound

[@mohamedamiin2761]

thank u so much it realy helped me

[@auroramizz]

i sware at 8:11 the rfm of hcl is not 36.5 but 18?!!!

[@mahmudurrahman7034]

is it edexcel or cambridge???

[@AAA11546]

Cambridge CIE syllabus, but the edexcel is very similar to the cambridge CIE

[@Engnazeer]

very useful

[@TopStarshake]

awsome. thanks a lot!!!!!!!!!

[@sabiqsabry3593]

what is relative formula mass mean

[@avikmital5548]

The mass no. of the compound.(like in CO2; 12+16+16 as it is the sum of the mass no.'s of the elements. Carbon has relative mass 12 and oxygen 16. As there are 2 oxygen atoms, 16 has to be added twice.)

[@bravo_1319]

Thank you sir

[@Mirsab]

Could you reupload it, please because the audio is not working.

[@daniyalharoon639]

watch it from computer

[@daniyalharoon639]

watch it from computer

[@MrLittlebutdangerous]

u just saved my ass

[@losoggyspaghetti]

Nadoor Best thing Ever! :D (if you're there :D )

[@helendang5362]

sound is not working

[@nooribrahim2157]

can u readjust the sound. thanks

[@rice7569]

shut up u fuckin wanker

[@zerminashakoorabdulshakoor1416]

What's wrong with the audio

[@ahnafahmed2319]

In 9:27 , how is the relative formula mass of NaOH 40? Shouldn't it be 39? [23+(16x1)] ?

[@anishkasyap9691]

Ahnaf Ahmed it's 23 + 16 + 1. not times 1

[@anishkasyap9691]

Ahnaf Ahmed it's 23 + 16 + 1. not times 1

[@daniyalharoon639]

Add 23+16+1,,,+1 is the mass of hydrogen,,,,the H with OH

[@ShahFaisalz]

Life saver

[@ewanstockwell4878]

finally

[@alishbaarshad913]

the voice wasnt audible on my mobile phone

[@bersiii1955]

I still dont understand

[@tomporter1086]

This was very helpful, but the man talking sounded as though he was considering suicide. (thank you)

[@chocolata105]

Fucking hell

[@Gurleenkaur-dw2fb]

The voice is so uncomfortable...