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Chemistry: Post your doubts here!

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The cracking of a single hydrocarbon molecule, CnH2n+2, produces two hydrocarbon molecules
only. Each hydrocarbon product contains the same number of carbon atoms in one molecule.
Each hydrocarbon product has non-cyclic structural isomers.
What is the value of n?
A 4 B 6 C 8 D 9
please help!
 
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When there's a ring, there can't be a cis-trans isomer.
13. Construct a balanced equation and use mole ratios.
why there can't be a cis-trans isomer in a ring? I did construct a balanced equation and got the mole ratio of AL2O3 to HCL 1:6 but my final answer was 60 instead of 30
 
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why there can't be a cis-trans isomer in a ring? I did construct a balanced equation and got the mole ratio of AL2O3 to HCL 1:6 but my final answer was 60 instead of 30

You have to construct two balanced equations. You forget Al + 3/4O2 -> 1/2Al2O3 + H2O and use the mole ratio from this equation for the other equation.
 
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Answer is B, activation too high

A: irrelevant, state only determines whether reaction will occur or not, and rate
C: the bond that is broken is N=N not triple bond
D: exothermic reactions occur easily, unless high EA
so B is correct answer

im sorry.. it was my mistake.. i had prob wid var12 nt 13... neways thanks
 
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