Chemistry :Electrochemistry, Galvanic cell ,Grade 9 Lebanon "Brevet official exams"English & Arabic

[@alifarhat2774]

Thank you wallah, iza najht bekon bsababk❤️

[@BrainHub1]

You are welcome, Nshala l kel byenja7, wel naje7 b sabab ento nawayto tederso 💪🏻

[@zeinabouhadir]

njht?

[@mohammadsaleh5196]

Shokran 7abib l2alb wallah stafadet ktiir minnak

[@BrainHub1]

Helo ktir, lhamdela 3am testafido , tekram

[@israashahine3904]

thanks bs badi a3ti nasi7a krmal y2dro y7fazo ashl wli hiyi: LEO GER bs iza 7fzo hay btshal 3lehon LEO y3ni lose electron oxid. w tanyi GER gain electrons reduce. thank you again:)

[@BrainHub1]

You are welcome dear , nshala yshoufo l comment 😍 thank you

[@israashahine3904]

@@BrainHub1 wlc💙🤍

[@alimoaullem5708]

Shokran walah ktrr stafadet ma kimit 3aref shi bnos se3a fhmt kil ldares aanjd thx ❤❤ whaydi 2a7la follow la 3younak

[@BrainHub1]

Lhamdela eno fhemna l dares 😍 you are welcome dear, bokra 3al exercises b siro ashal

[@sho3my]

Shokran istaze kter wa 2nshlah 2nja7 wa bkon mamnonnak ktirr❤️

[@BrainHub1]

Tekram, nshala bte3mal mnih 💪🏻

[@sho3my]

@@BrainHub1 ❤️❤️

[@laylasallat3206]

شكرا كتير على مجهودك ❤

[@BrainHub1]

تكرمي ❤️

[@ebtisamabbass2980]

استاذ إذا مفي أزعاج فيك تشرحلنا دورة ٢٠١٥ الأستثنائية كيميا صف التاسع درس galvanic cell

[@BrainHub1]

ان شاء الله، صار لازم نزل كتير اشياء، بس صار في تأخير

[@ebtisamabbass2980]

@@BrainHub1 اي صار تأخير ولازم 🤕

[@sirine3556]

Thank you wala ❤❤❤

[@BrainHub1]

You are welcome dear 😍

[@mariamsworld7729]

Thank you so much ❤️🥀kter tmm l shari7 w hayen 3njad thank you

[@BrainHub1]

Welcome dear 💪🏻 nshala menjib 3aleme helwe 😍

[@mariamsworld7729]

Nshala eza bjib bkoun bsbabak l2eno ma kent kter fhme dares bas 3njad m3ak fhemto❤️❤️ @@BrainHub1

[@mariamsworld7729]

@@BrainHub1 sw2al eza bade fout 3al exercises wyn please 🥺

[@BrainHub1]

@@mariamsworld7729 khayy, yalla 3a2bel ma njib mni7 bel exam 😍

[@BrainHub1]

@@mariamsworld7729 still ma nazalton abel l official exams nshala mafroud shaher l jey

[@benaasd5642]

Keep it ☝

[@escalope_slayer8401]

Thank you very much 7bb allah yrz2ak❤️❤️

[@BrainHub1]

Welcome dear ❤️❤️

[@zaynabakil2358]

kterr lshare7 mofed 3anjad thanks

[@BrainHub1]

You are welcome dear 😍 l mhem 3am testafido

[@0human_being0]

Merci ktir aal share7 bas 3ande su2al aymtn betkun octet aymtn duet rule??

[@BrainHub1]

Eza awal shell (K) mne3tebera duet kermel bte7mol only 2 e- w octet b be2e l shells (LMN) kermel bye7emlo 8. You are welcome ✋🏻

[@habibmawla]

أستاذ ليش بنقول half reaction

[@BrainHub1]

كرمال بتصير على ميلة من الميلتين(anode or cathode( كل وحدة منن اسمها half reaction و بالآخر بيطلع عنا total reaction منسميها global or redox , هي جمع الاثنين

[@another_world0]

Hi I am from lebanon and I am in grade 9 the exams have this and do you have a video about Chemical bonding?

[@BrainHub1]

Yes dear, kindly check this link kzbin.info/www/bejne/iKjMqmNvhtGBj80 or search in our playlist on lesson 1 and 2 chemistry

[@another_world0]

@@BrainHub1 thank you🙏♥️

[@BrainHub1]

You are welcome dear

[@louaykanso3761]

It's good but i think there is more informations in the galvanic cell you didn't mention them👍

[@BrainHub1]

Thank you dear , if any information not mentioned in videos it should be mentioned in the exercise

[@princeslolosalman7954]

wso2al? daroori bl 2emti7an lbreve nektob kel l2ar2am bl roman?

[@BrainHub1]

Fik tektob kel l calculation bel numbers l 3ade bass ekher jaweb bado ykoun roman Ex: SO²⁻ ₄ => (O.n. Of S ) +4(o.n. Of oxygen)=-2 (O.n. Of S ) +4 (-2)=-2 (O.n. Of S ) -8=-2 (O.n. Of S )=-2+8 (O.n. Of S )=+6 => +VI

[@princeslolosalman7954]

@@BrainHub1 ya3tik l3afyi, bs ne7na lteacher mish m3almetna hyk wma ba3rif 2ektob bl roman🥺💔

[@BrainHub1]

W shaghle ba3ed , bel awal keno ktir yda2e2o 3al roman number, hala2 ma fiye a3ref kermel ktir 3am yetsehalo ma3 l tolab bass b kel l a7wel sta3mel roman. 1 I 2 II 3 III 4 IV 5 V 6 VI 7 VII 8 VIII 9 IX 10 X

[@princeslolosalman7954]

@@BrainHub1 merciii ktiir 3njd❤😍

[@BrainHub1]

@@princeslolosalman7954 kermel hek katabton bel comment l abel men 1 lal 10. please check

[@alihankir2802]

hello, ya3tik l3afye she8el ktir mrattab w mofid, bas in the calculation of oxidation number of N in NH3 msh lezem o.n of N yetla3 -3???

[@BrainHub1]

Oups ma3ak ha2 ma ntabahet eno ma ghayaret l sign am sorry for this mistake w nshala ma ykoun hayda l shi wassal information ghalat , lezem nazel video share7 lal khata2 w tosli7 w please shou ma ykoun fi comments ana jehez esma3, sometimes we lose focus and we need your help thank you again dear

[@محمودمحمود-ث5د1ف]

سؤال ازا ممكن نحنا ليش عملنا هيك Zn=Zn2+ + 2e- انا اصدي انو شو بتفيد هيدي الحركة بتمنى ترد عليي

[@BrainHub1]

اهلاً ، انا ما عرفت بأي دقيقة بس حجاوب بناء على الي كتبتو: نحن دايماً منكتب عن حالة المعدن الي استعملنا و هيدي العلاقة منكتبها تحت شكل equation و منها منقدر نعرف اذا ال zinc عم تخسر او تربح و بس تخسر لشو بتتحول هون متل ما صاير عنا، ال zinc تحولت ل +Zn 2 يعني خسرت 2e- و لنقول وين خسرتن منكتب من بعدها ال 2e- هيدي الحركة بتخليني ميز اذا ١-المعدن هو عم يخسر او يربح ٢- منحطو anode aw carhode ٣- كيف عم تمشي الاليكترونات ٤- اذا عم بقل او يزيد وزنها من خلال ال equation(بهيدي الحالة ال zinc كان معدن عم بدوي و يتحول ل zn2+ و ينزلو بالكوب) ٥- بتساعدني اكتب ال global reaction, redox reaction ان شاء الله كون قدرت وصّل الفكرة، و اذا اي سؤال تاني تواصل معنا على الفايسبوك بلكي بقدر اشرحلك اكتر ، رقم التليفون موجود هونيك

[@محمودمحمود-ث5د1ف]

@@BrainHub1 شكرا كتير الك ونحنا كطلاب بنتمنى يكون عنا اساتذة متلك ينتبهو لاسالتنا شكرا كتير

[@BrainHub1]

@@محمودمحمود-ث5د1ف تكرم هيدا الشي بفرحني ، و اعتبر عندك هيك استاذ ، بس بدك اي شي اسأل ما تستحي

[@rosellasy7384]

Very nice 😍💗

[@BrainHub1]

😍

[@jimmyyoung-yg4vm]

Shokran kter 2stiz 😊

[@BrainHub1]

Welcome dear

[@محمدعلي-ذ3ج5ت]

شكرا كتير

[@BrainHub1]

يا هلا

[@sillywilly4848]

Thank u my bestie 💗‼️💗

[@BrainHub1]

Welcome dear 😍

[@hallak-cz2kx]

Thanks you so much 💕

[@BrainHub1]

Welcome dear 😍

[@princeslolosalman7954]

please momkin te3mil vidyo 3n 3edit exercises la nefham 2ktr?w2eza fik te3meli mntion 2aw 2aya shi wba3tik share wlike walla🌚

[@BrainHub1]

No need lal mention , bass 3mal subscribe w bass yenzalo deghre byousalak notification nshala abel l emti7anet bel fatra l 3endkon 3otle akid 7a nazel exercises nshala,😍

[@princeslolosalman7954]

@@BrainHub1 mercii ktir 3njd 27sn saf7a wsa3adetni ktiir wshar7ak ktiir bifahim walla 😍❤

[@BrainHub1]

@@princeslolosalman7954 hayda ahama shi eno 3am tefhamo 😍☺️ you are welcome w good luck dear

[@princeslolosalman7954]

@@BrainHub1 merciiii ❤😍

[@kaiserwilhelmii1023]

Balek kint bos2ot l sene, thank you so much

[@BrainHub1]

You are welcome dear 💪🏻💪🏻 nshala ma mnos2ot

[@نورالشام-د4ر9ع]

Hi Hyda el dars howi nafso l grade 11 m3 b3d el edafat ,ao begher tb3 grade 11 ?

[@BrainHub1]

Hello, Sah nafes l information bass bel grade 11 badak tet3alam tjib l voltage, w fi shwayet zyedet

[@maysammh5051]

Hi 👋 استاذ انا بعرف انو ال K بتعبي 2 و ال L بتعبي 8 و M بتعبي 8 و N بتعبي 2 (نحنا هيك اخدين بمدرستنا) انت قلت انت N بتعبي كمان تمانة كيف

[@BrainHub1]

هي بتعبي اكتر من ٨ ، سنة الجاي بتاخدو طريقة جديدة للelectronic configuration, و هلأ بالمدرسة بيطوكن انو ال N بتاخد ٢ كرمال انتو مسؤولين عن اول 20 elements mesh l kel

[@maysammh5051]

@@BrainHub1 ok يعني بحفظها كأنها بتعبي تنين

[@BrainHub1]

@@maysammh5051 7faza 8 (kermel bass t2oul type of bond and stability use octet rule,, eza 2 badak t2oul duet rule)

[@esraazaiter8454]

Thank u very niceee

[@BrainHub1]

Welcome dear

[@سعدسليمان-ظ2ن]

Thank you

[@BrainHub1]

You are welcome dear

[@سعدسليمان-ظ2ن]

@@BrainHub1 سوال رح تعمل شرح عن ال electricity لانو انا مو فهمانو

[@BrainHub1]

@@سعدسليمان-ظ2ن موجود عالصفحة تحت عنوان ، physics: DC voltage, Ac voltage

[@سعدسليمان-ظ2ن]

@@BrainHub1 لقيتو شكراً..

[@burgers3895]

Thank u teacher on your good explanation , i really appreciate your hard work 💝💖

[@BrainHub1]

You are welcome dear, nshala bel naje7

[@burgers3895]

@@BrainHub1 thank you alot 🥰

[@BrainHub1]

✋🏻✋🏻

[@zeinabfarhat1427]

hii fine e7sal 3a shar7 l dars pdf aw word?

[@BrainHub1]

Hello akid please, send me an email, [e-mail] or check our phone number from facebook to forward them, it's better to contact us through phone number.✋🏻

[@husseinalsamhoury4028]

Ana fi 3nde question bi k Mn O4 please tell me min wen jibet - 8 bi third step hiye bi second step 7atet +4 (-2)=0 kif LA 7atet bi third step - 8 Please jewebne 3a so2ale iza bitrid ❤️

[@BrainHub1]

Hellooo, ana 7a eshra7a based 3ala l info l katabton bel KMnO4 3tabarna l Oxydation number lal k =1 so badna njib l oxydation number lal Mn w ne7na we already know (hayde bte7faza) eno l oxydation number lal O=-2 so l equation hek betsir : +1+ O.n. (Mn) + 4(-2)=0 3ende 4 atoms oxygen w kel wehde -2 so mnodribon b siro -8 w ma nensa eno men7oton = lal charge (w hon no charge so equal la zero) Nshala koun jewabtak 3a sou2alak

[@husseinalsamhoury4028]

@@BrainHub1 eh fhmt shokran ktirrr w Allah ye7mik w smallah 3lek zake w shater w bade 2irja3 2itshakarak w 2ilak thank you for the information w Ana 2iltilon LA rif2ate krmel yfoto yo7darok w yed3amok l2nk btestehal

[@BrainHub1]

Tekram 3ainak 😘😘 l mhem tkoun fhemet, shou ma fi as2ila ahla w sahla. T3alamo tes2alo w tfatsho 3a jaweb. Ma fi de3e lal shokran hayda wejbe my dear friend.

[@husseinalsamhoury4028]

@@BrainHub1 thank you for the advice and thank you for your interest ❤️❤️

[@alexzbib4044]

hi so2al s8eer hyd sho 2sma Mg-------Mg2+2e cu--------cu2+2e_- hode sho 2smon ?

[@BrainHub1]

Helloo, Hole l 2 equations wehde anode half reaction Wel tenye cathode half reaction Bass hone enta keteb l equation metel ba3ed so tnayneton 3am ye3malo oxydation so tnayneton 3al anode eza badak tektob l cathode hek btetla3 , La n2oul l cu 3al cathode so l reaction betsir Cu2+ +2e- --> Cu(s) ( hayde cathode half reaction

[@alexzbib4044]

@@BrainHub1 ok natreen l exercises

[@marybellemarybelle1395]

Thxs a lot

[@BrainHub1]

Welcome dear

[@what3093]

Merci ..... wala it was helpful

[@BrainHub1]

Welcome dear🥰 hayda l matloub ✋🏻

[@mohammadsaleh5196]

Momkin Ta3mil 3n el equation of str. Line 2

[@BrainHub1]

Mawjoud l dares bel channel

[@alexzbib4044]

2wal shi yeslmao second hyda l share7 kelo wala b3d fi shi mesh shar7o 2na gr 9

[@BrainHub1]

Tekram, hayde l sene talbin bass la hon w menbalesh nshala men ekher l shaher men balesh exercises

[@alexzbib4044]

@@BrainHub1 ok 3njad kteer btfahem w natreen l 2ktar

[@BrainHub1]

@@alexzbib4044 thank you, nshala ✋🏻

[@shaymaahlayhel2395]

Thnx you ❤ kter tmem lshare7

[@BrainHub1]

You are welcome dear ☺️😍

[@mohammadkaj3812]

Good

[@BrainHub1]

Thank you

[@pkxd2259]

انت لبناني صح

[@BrainHub1]

صح

[@loayhaydar2691]

y3tek al3afye bas 3mel ma3rof wen kmelet alvedio

[@BrainHub1]

Allah y3afik ,Ma fhemet 3lek asdak min nadaf l sot w as2as menno ? Please twasal ma3e 3al email la e2dar efham menna w fidak [e-mail] , w nshala be2dar se3dak

[@mariamsworld7729]

Hi please l exercises ha tnzelon natra l exercises 3an hal dares eza mmken tnzelon 🥺🙏😣 w 3njad thanks kter eno 3am 3zbak aw etlob 😖😖

[@BrainHub1]

Nshala this week chem w physics w jem3et l jey l math ☺️, welcome dear

[@mariamsworld7729]

Waw 3njad thank you so much ana kter netra l chem mnshn l official exam allh y3tik l 3fye you are the best teacher ♥️♥️♥️@@BrainHub1

[@BrainHub1]

@@mariamsworld7729 welcome dear😍

[@mariamsworld7729]

Teacher how much time is left for the exercises to be uploaded.. i need it so much because the official exam are approaching😭😭😭💔 @@BrainHub1

[@BrainHub1]

Bokra lezem ybalsho yenzalo

[@LIBRA-g3u]

Hi teacher Thank you very much 3l explanation lmfsal bs b d2i2a 14:05 L equation (N3+3H2 )ma shr7ta fik tshr7a l2ne ma 3m efhma plz

[@BrainHub1]

Hello dear, so N2 and H2 (reactant, before the arrow) are two pure elements they are in a state where their oxidation number is = 0 , while after the arrow or in the product field, the oxidation number fir hydrogen in a molecule is +1 (need to know it) then the molecule NH3 is a molecule, so the oxidation number is additive, Thus O.N of (N) + 3*O.N of (H) =0 N + 3(+1) =0 Then N =-3 * O.N means oxidation number , good luck

[@rheaziade5166]

nchalla enja7 tku

[@BrainHub1]

Nshala😍

[@eliasnsair3909]

allah y3tik al afieh first, there are two mistakes 1- oxidation and not oydation 2- putting a voltmeter in the circuit is wrong because the voltmeter has high internal resistance and thus prevent the passage of electrons so you better put a lamp instead of a voltmeter

[@BrainHub1]

Allah y3afik, merci ktir elak balke bass nazel video exercises bmare2 l ma3loume, ana betshakarak w hayda kelo b hadaf naje7 l tlemiz . Katabet voltmeter la2an b ba3ed l kotob byesta3emlo voltmeter bl exercises . Thank you sir kamen marra w please betmana ydal 3endak comments la n7assin 👋

[@3s.188]

شرحك *****