Answer:
Four  
Explanation:
AlCl₃(aq) ⟶ Al³⁺(aq) + 3Cl⁻(aq)
One mole of AlCl₃  produces 1 mol of Al³⁺ and 3 mol of Cl⁻.
That's four moles of ions.
 
        
             
        
        
        
43 inHg = 43 inHg*2.54cm/in = 109.22cmHg * 10 mm/cm = 1092.2 mmHg
14.7 psi = 760 mmHg
1092.2mmHg * 14.7psi / 760 mmHg = 21.13 psi 
Answer: option D. 21.13 psi
        
                    
             
        
        
        
Answer:
A
Explanation:
Because the amount of electrons in the outer shell can be a maximum of 8
Hope this helps