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Thank you A star: I got it perfectly. JazakAllah for being kind and explaining.
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How did you get 31?5D 31b ihave done it 5 times
please see my above explainationsHow did you get 31?
thnks a load dude!! that was big tym help ... i always got stuck on that question :/the question is like this: the same mass is used every time, right? let mass be x
then moles of zinc = x/65
moles of magnesium = x/24
the equation for both reaction is same, so one mole of metal produces 1 mole of hydrogen.
therefore, moles of H2 with zinc = x/65, whereas moles of H2 with Mg = x/24!
x/24 is greater, so greater volume with magnesium!
wrong explanation! see my explanation given above!
nah didn't wanna b rude but its the exam phase so.... and saying that the exam is going to b tough is hitting a nerveRoses are Red
Violets are Blue
People are so rude
For which i don't have a Clue!
Cant find your above explanation!please see my above explainations
LOL!nah didn't wanna b rude but its the exam phase so.... and saying that the exam is going to b tough is hitting a nerve
anyways thanks for the hints anyways..... u were ryt we need to b prepared for it.
so was I the targetLOL!
You were never the target!
Nope!!so was I the target
air contains 20% oxygenHow did you get 31?
Thanksair contains 20% oxygen
so
20/100*80=16 cm3 of O2 reacts with iron
thus
80-16=64cm3 volume of gas remains
B is the answer....
I just realised the q.no. 8 in chemistry's red spot past papers is incorrect so the answer also ought to be incorrect. so please sum1 tell me what would be the answer to
Q. ethane has structure as shown
H H
I I
H-C-C-H
I I
H H
i.e C2H6
how many of the electrons in a ethane C2H6 are not involved in bnding?
A)0
B)2
C)4
D)8
plz sum1 help me out a.s.a.p.
how is it A please explain.
according to me the answer is A [ 0 ]I just realised the q.no. 8 in chemistry's red spot past papers is incorrect so the answer also ought to be incorrect. so please sum1 tell me what would be the answer to
Q. ethane has structure as shown
H H
I I
H-C-C-H
I I
H H
i.e C2H6
how many of the electrons in a ethane C2H6 are not involved in bnding?
A)0
B)2
C)4
D)8
plz sum1 help me out a.s.a.p.
bt how is it A only because that is the answer in past papers/according to me the answer is A [ 0 ]
draw the structure and u'll know that all hydrogen electrons are bonding bcz hydrogen has only one electron each and if its invlved it need to be bonded by that electron. and each carbon is bonded with four single bonds (1 with the other carbon and 3 with hydrogen atoms) got it >??how is it A please explain.
how is it A please explain.
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