Answer:
I think that gravity can be considered a force.
Explanation:
As the object falls, it moves faster and faster. Gravity is considered a universal force because it acts between any two masses anywhere in the universe. For example, there is a gravitational pull between the Sun and the Moon. Even small masses attract one another.
Hope this helped! :)
 
        
             
        
        
        
<u>Answer</u>:-
Name of element = Lead
Symbol ♾ of Lead = Pb
Atomic no. = 82
Atomic mass = 207.2 amu 
No. of protons = 82
No. of electrons = 82
Yes, lead(Pb) is a metallic element and certainly it has 6 electron shells which means 6 energy level.
If you find anything unclear you can ask me...
 
        
             
        
        
        
Answer:
Na2CO3 is the formula for sodium carbornate
 
        
             
        
        
        
Answer:
3.48 g NaF
Explanation:
Dimensional Analysis:

Answer (Simplifying the Expression Above):
3.48 g NaF