Answer:
.0017952905 mol
Explanation:
I hope this helps, I can't promise I got it right, please let me know haha! 
 
        
             
        
        
        
Au is the symbol for gold. It comes from Latin word for gold, which is Aurunum. Its atomic number is 79. 
        
                    
             
        
        
        
Therefore the largest atoms are on the left and the smallest on the right. So sodium (Na) has the largest atomic radius, as the valence electrons are the least attracted to the nucleus
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The answer to problem is [He] 2s1. Hope it helps
 
        
                    
             
        
        
        
Answer:
When the concentration of all the reactants increases, more molecules or ions interact to form new compounds, and the rate of reaction increases. When the concentration of a reactant decreases, there are fewer of that molecule or ion present, and the rate of reaction decreases.