Answer:
The answer to your question is 3 moles of AlCl₃
Explanation:
Process
1.- Write and balance the equation
                   Al(NO₃)₃ + 3NaCl   ⇒   3NaNO₃  +  AlCl₃
2.- Determine the limiting reactant
Theoretical proportion     1 mol Al(NO₃)₃ :  3 moles of NaCl                   
Experimental proportion   4 moles Al(NO₃)₃ : 9 moles NaCl
From these values, we determine that the limiting reactant is NaCl because the number of moles increases three times and the number of moles of Al(NO₃)₃  increases four times.
3.- Determine the amount of AlCl₃ using proportions
                        3 moles of NaCl --------------- 1 mol of AlCl₃
                        9 moles of NaCl ----------------  x
                        x = (9 x 1) / 3
                        x = 9 /3
                        x = 3 moles
                       
 
        
             
        
        
        
Answer:I think it’s A.Positive. Not sure though. 
Explanation:
 
        
                    
             
        
        
        
Answer:
Calculate the atomic radii of two touching or overlapping atoms.
Explanation:
No doubt, we can't find the atomic boundary of a single atom, but when atoms are in the form of pairs it becomes very easy to measure the atomic radii of two and then dividing it by 2 to get an estimate of atomic radius of a single atom.
It is also called as covalent radius which is half of the total inter-nuclear distance between two same bonded atoms (Homo-nuclear).
If two adjacent mettalic ions are joined by such pairing then the same half of the distance between the nucleus is termed as metallic radii.
 
        
             
        
        
        
Answer:
There are many properties that scientists use to describe waves. They include amplitude, frequency, period, wavelength, speed, and phase. Each of these properties is described in more detail below. When drawing a wave or looking at a wave on a graph, we draw the wave as a snapshot in time.
Explanation: