Answer: The given pairs of electrons most likely reside in 
type of orbital.
Explanation:
As it is given that two lone pair of electrons are present on the oxygen atom of ketone (such as cyclohexanone).
Also, there will be one bond pair between carbon and oxygen atom.
Hence, total electrons present in the domain are as follows.
2 lone pairs + 1 bon pair of electron = 3 electron domains
This means that there will be type of orbital present.
Thus, we can conclude that given pairs of electrons most likely reside in type of orbital.
Lead is a pure substance
paint is a mixture substance
The first answer would be:
Measure the sequence of events on earth over time.
I believe the second answer would be:
The age of earth. ( I say this because geological time is used to describe timing and the relationship of events in earths history)
I’m not sure about number 3 but I hope this was somewhat useful!!
Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system. Hope it helps
