Answer:
Quantitative observation is an objective collection of data which is primarily focused on numbers and values.
 
        
             
        
        
        
?? Is that the whole question?
        
             
        
        
        
Answer:
Here boron-11 means the name of the element is boron and the mass number is 11
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Answer:
 1 mole of sodium chloride ions
Explanation:
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