<h3>Answer:</h3>
Heterogeneous mixture
<h3>Explanation:</h3>
The easiest way of defining Heterogeneous mixture is that it is mixture in which the composition of components is not uniform. Also, the substances present in this mixture are visible to naked eye. In fact, the size of solutes in heterogeneous mixture is greater as compared to that the sizes of solutes in homogeneous solutions. hence in salad dressing the oil, vinegar and spices are all visible and can easily be seen by naked eye.
Mater means mom
The mater has kept the house in London
If you meant matter
There is not a lot of matter in an apple compared to the matter in a person.
The density is calculated with the following formula:
density = mass / volume
If there is water on the pan of scale, you will read the mass of the mineral plus mass of water.
Using this value to calculate the density (ignoring the fact that you had water) you will obtain a higher density of the mineral than the real one.
The electron configuration of sodium in excited state is 
Atomic number of sodium is 
i.e. it contains electrons.
The electron configuration of sodium in ground state is 
When sodium is in excited state the valance electron of 
subshell jumps to 
subshell on gaining energy.
The condition of sodium is very unstable and thus the outermost electron in subshell will release energy and return back to its original orbital (that is ).
This will release equal energy which it absorbed to jump to subshell producing yellow light.
To know more about electron configuration
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A. the removal of energy because you will be losing heat
