The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
        
             
        
        
        
Answer:
C
Explanation:
 it belong to that group as it needs 1 electron to be chemically stable
 
        
             
        
        
        
Endothermic or C, if you would like a reason why, do not hestitate to ask
        
             
        
        
        
Answer:
     The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart.
Explanation:
You're welcome!
Stay Safe!
 
        
             
        
        
        
Answer:
<h2>95.5 moles</h2>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula

where n is the number of moles 
N is the number of entities
L is the Avogadro's constant which is 
6.02 × 10²³ entities
From the question we have

We have the final answer as
<h3>95.5 moles to 3 sig. figures</h3>
Hope this helps you