my teacher spent a hour and a half trying to teach this to us and we couldn't understand it. you spent only 5 minutes and i fully get it. thanks a bunch
THROUGH THE FORMULA I GET +7 BUT sulphur can exhibit a maximum of 6 right?
OK if i d use -1 for peroxide then how 'd u determine 6? what is the methhod u use? please reply as quickly as possible T_T. i dont get this stuff and troubling with this topic
you know that oxygen has a charge of -2.... there are 7 oxygens there, so thats a total charge of -14. you wanna find the charge on the Cr, and you know the combination of oxygen and Cr has to equal -2 (because thats what the 2- is telling you). To find the combination, you have to ADD the two charges together.
To think it through, let x stand for the total charge on the Cr
So x + (-14) = -2 x - 14 = -2 x = 12
Since there are 2 Cr, each one has a charge of 6 (12/2)
our teachers normally explain this lesson for an hour but her's @ more than 5 mins and we literally fully understand the her lesson. WHAT A DIFFERENCE! :D
my teacher spent a hour and a half trying to teach this to us and we couldn't understand it. you spent only 5 minutes and i fully get it. thanks a bunch
EminemRAGE 7 hours ago
please be my teacher ahhhh your sooo good
JoJoLovesYouX 1 week ago
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CAN I ASK WHAT IT WILL BE FOR H2S2O8?
THROUGH THE FORMULA I GET +7 BUT sulphur can exhibit a maximum of 6 right?
OK if i d use -1 for peroxide then how 'd u determine 6? what is the methhod u use? please reply as quickly as possible T_T. i dont get this stuff and troubling with this topic
disha9876 1 month ago
I like this tutor/teacher much better. She speaks slower and feels more thorough with the lesson.
thewritingteenager 1 month ago
i mean 4:38
1shotsoju 2 months ago
i am lost at 5:03 how did she get Cr6+??? can someone explain it better?
1shotsoju 2 months ago
you know that oxygen has a charge of -2.... there are 7 oxygens there, so thats a total charge of -14. you wanna find the charge on the Cr, and you know the combination of oxygen and Cr has to equal -2 (because thats what the 2- is telling you). To find the combination, you have to ADD the two charges together.
To think it through, let x stand for the total charge on the Cr
So x + (-14) = -2 x - 14 = -2 x = 12
Since there are 2 Cr, each one has a charge of 6 (12/2)
:D
jess28ica 1 month ago
oh mayb its different in ur educational system......
sausi20 2 months ago
that's some really neat writing! :D
sharonbaskinrobins 2 months ago
what about if you have DIATOMiC ATOMS
stuntsaki 2 months ago
everythin was good but....halogens arent group 7 ...they're in group 17
sausi20 3 months ago
@sausi20 Halogens are indeed in group 17 but you dont count the transition metals so subtract 10 to that number. Now its 7 ;)
tyjabba 2 months ago
@sausi20 They're group 7 mate
Unless you count Transition Metals
siloPIRATE 2 months ago
Just a question... after watching a few of your videos I can't help but wonder; is this "brightstorm2" organization sexist?!
vdublovexo 3 months ago
so I had this awkward moment where I was like... DRAT after 3 years I still don't understand, even after this woman explained it ._.
but I decided ..WAIT.. -pause vid- -work out oxidation state of Cr- -looks at answer-
holy.. o.o I got it D:
Thanks random female teacher!
16thwarrior001 4 months ago 2
this teacher is very much good :) helped me a lot
gurdeep385 4 months ago
our teachers normally explain this lesson for an hour but her's @ more than 5 mins and we literally fully understand the her lesson. WHAT A DIFFERENCE! :D
iheartMichelleP 5 months ago
Thanks....
christopherificable 6 months ago
I love you teacher! I helped me a lot!
DEEEKAYify 7 months ago
very good... but u r a lill fast
geforceU 8 months ago
very good
tayyabhassanzahidkmk 8 months ago
This lady is very helpful ! Thank you
Levelene1 9 months ago
actually very helpful! i like how you explained what each thing was, it helped me understand a lot better. thanks so much! keep up the good work.
MelissaPriskk 10 months ago