Correct answer is magnesium bromide. This is an ionic compound with metal forming a positive ion - K+ and halogen forming a negative ion - Br-. When group 7 element form ions they have a suffix -ide. Bromine is the element and when it forms a negative ion bromine is called bromide with the suffix. 
Magnesium gives 2 electrons and bromine can take only 1 electron, therefore 2 bromine atoms are needed. Therefore magnesium forms ionic bonds with 2 bromine atoms. 
The compound is called magnesium bromide
        
             
        
        
        
I can’t see what image you have to refer too but India is now part of the rest of Asia due to continental plates running into eachother.
        
             
        
        
        
Answer:
They expressed it as rate of change in concentration of reactants or products in a chemical reaction
 
        
                    
             
        
        
        
Answer:
the input force would be 75 N
Explanation:
if the output force is 150 N you divide that in half which leaves with 75 N !! :)