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Chemistry: Post your doubts here!

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i am working on it Metanoia :)
i had to erase some answer because you had already answered them. please tell me which one you are doing so i do other queries instead.

Maybe we can quote and "click reply" immediately.

And then take your time to add the answers by editing the posts.

If it turns out we are repeating answers even after that, just leave them posted. Sometimes, it might be good to have differing approaches to the same questions.

Quite a few questions are repeated, so I just copied and paste what I type just a day or two ago.

Anyway, I will be here for just only a while longer .
 
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thats they way i am doing. adding each question one by one. but instead on new post because the answer won't get notification when i add new answer to the same post.
Maybe we can quote and "click reply" immediately.

And then take your time to add the answers by editing the posts.

If it turns out we are repeating answers even after that, just leave them posted. Sometimes, it might be good to have differing approaches to the same questions.
 
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Maybe we can quote and "click reply" immediately.

And then take your time to add the answers by editing the posts.

If it turns out we are repeating answers even after that, just leave them posted. Sometimes, it might be good to have differing approaches to the same questions.

Quite a few questions are repeated, so I just copied and paste what I type just a day or two ago.

Anyway, I will be here for just only a while longer .
you can take rest. i will handle these childish questions :p
 
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the double bond can form between the carbon on which OH is atached and any adjacent carbon.
in (a) and (d) only one product as there is only one adjacent carbon to carbon on which OH is attached
in (b) if the double bond is formed between the 3rd and 2nd carbon then it will have 2 cis-trnas isomers. total 3 products.
in (c) again one product because both products will be same as the molecule is symetrical.
 
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thats they way i am doing. adding each question one by one. but instead on new post because the answer won't get notification when i add new answer to the same post.

I feel it doesn't matter, since they asked the questions, they should know to check back for the updated answers. But its up to you, whichever is comfortable.
 
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Q8) Use of the Data Booklet is relevant to this question.

The approximate percentage composition of the atmosphere on four different planets is given in
the table below.

The density of a gas may be defined as the mass of 1 dm3
of the gas measured at s.t.p.

Which mixture of gases has the greatest density?


planet major gases / % by number of molecules
A Jupiter H2 89.8, He 10.2
B Neptune H2 80.0, He 19.0, CH4 1.0
C Saturn H2 96.3, He 3.25, CH4 0.45
D Uranus H2 82.5, He 15.2, CH4 2.3
 
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Q8) Use of the Data Booklet is relevant to this question.

The approximate percentage composition of the atmosphere on four different planets is given in
the table below.

The density of a gas may be defined as the mass of 1 dm3
of the gas measured at s.t.p.

Which mixture of gases has the greatest density?


planet major gases / % by number of molecules
A Jupiter H2 89.8, He 10.2
B Neptune H2 80.0, He 19.0, CH4 1.0
C Saturn H2 96.3, He 3.25, CH4 0.45
D Uranus H2 82.5, He 15.2, CH4 2.3

I'll update this in a while
 
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Q8) Use of the Data Booklet is relevant to this question.

The approximate percentage composition of the atmosphere on four different planets is given in
the table below.

The density of a gas may be defined as the mass of 1 dm3
of the gas measured at s.t.p.

Which mixture of gases has the greatest density?


planet major gases / % by number of molecules
A Jupiter H2 89.8, He 10.2
B Neptune H2 80.0, He 19.0, CH4 1.0
C Saturn H2 96.3, He 3.25, CH4 0.45
D Uranus H2 82.5, He 15.2, CH4 2.3
the dense gas have heavier Mr.
to overall Mr of "D" is higher. you can calculate it like this:
[82.3%(2)+15.2%(4)+2.3%(16) ]/100=2.62
the average Mr of all others is less. you can check it.
 
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