Answer:
k is 9.1×10^-3 min^-1
Explanation:
Rate for a first-order reaction is kC
Rate = kC = change in concentration/time
C = 0.501 M
Co = 0.722 M
Change in concentration = Co - C = 0.722 - 0.501 = 0.221 M
Time = 48.5 min
k×0.501 = 0.221/48.5
0.501k = 4.56×10^-3
k = 4.56×10^-3/0.501 = 9.1×10^-3 min^-1
A. good conductors is not a characteristic of metals out of all the other followings.
.H
^
tht is a dot. this is for the h2
Answer:
,
,
, ![O_3](https://tex.z-dn.net/?f=O_3)
Explanation:
In figure 1 we can several structures for
in which the double bond can be moved across the oxygens due to the <u>resonance</u>.
In figure 2 the double bond between the carbon and the oxygen in
can be <u>delocalized</u> to the oxygen generating a new lewis structure in which we have a negative charge in the oxygen and a positive charge in the carbon.
In figure 3 we have again a <u>delocalization</u> process upon the nitrogen in order to produce a negative charge in the nitrogen and a positive charge in the carbon generating a new lewis structure.
In figure 4 due to the <u>resonance</u>, the double bond to the central oxygen can be moved from left to right generating 2 lewis structures.
Finally in the two last molecules is not possible to move the electrons. For
is not possible because there are <u>no electrons</u> to move. In the case of
the movement of electrons would generate <u>structures too unstable</u> so it is not possible to generate more lewis structures.