Newton ,perhaps as many other originations  use it as a gravitational law
        
                    
             
        
        
        
Three classes: 28×3=84 students
8 test tubes per student: 84× 8= 672 
hope this helps!
        
             
        
        
        
Answer:
Explanation: Over the course of a year, areas near Earth’s equator receive more direct energy from the Sun than areas near Earth’s poles.  Which of the following correctly describes one result of this heating pattern?
 
        
             
        
        
        
I have provided the steps and solution within the attachment. The pH of the solution would be 12.30, this indicates that the solution is basic, as a higher value of pH indicates presence of more hydroxide ions and less of hydrogen ions in the solution.
 
        
        
        
Answer:
a. decrease the amount of the common ion in the system
Explanation:
The correct option is - a. decrease the amount of the common ion in the system
Reason -
Adding a common ion decreases solubility, as the reaction shifts toward the left to relieve the stress of the excess product. 
Adding a common ion to a dissociation reaction causes the equilibrium to shift left, toward the reactants, causing precipitation.