If 2 acid have ph value 3 and 5 respectively, which will be more acidic? Why?
1 answer:
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Answer : The structural formulas for each of the possible isomers of n-hexene are shown below.
Explanation :
Isomer : It is defined as a molecule have the same molecular formula but the different chemical structure.
There are three structural isomers of n-hexene that is based on the location of the double-bonded carbon atoms with the other atoms.
In n-hexane, 'n' shows that the chain should be straight chain there is no branching.
The three structural isomers of n-hexene are:
(1) 1-hexene
(2) 2-hexene
(3) 3-hexene
Thus, the structural formulas for each of the possible isomers of n-hexene are shown below.
Answer : The time taken by the reaction is,
Explanation :
The expression used for second order kinetics is:
where,
k = rate constant =
t = time = ?
= final concentration = 1.25 M
= initial concentration = 2.25 M
Now put all the given values in the above expression, we get:
Therefore, the time taken by the reaction is,
Answer: A) a chemical change is required to seperate the elemnts present in it
Explanation:
Water is a compound, since it is the result of combining atoms: hydrogen and oxigen
. In fact, the chemical formula of water is
.
On the other hand, chemically in a compound the atoms must be combined in a fixed ratio by mass. In the case of the water molecule, the ratio is 2:1 (For each oxigen atom there are two hydrogen atoms).
So, if we want to separate the atoms that make up the water molecule, it only will be possible by a chemical change and not by a physical one.
Hence the correct option is A.