Number of atom in one mole = 6.022 × 10²³
So, in 3.5 moles, it would be: = 6.022 × 10²³ * 3.5 = 2.1 × 10²⁴
In short, Your Answer would be 2.1 × 10²⁴ atoms
Hope this helps!
        
                    
             
        
        
        
<h3>
Answer:</h3><h3>
</h3><h2>E. Coli </h2>
<h2>its a easy and faster answer to look at (;</h2>
 
        
        
        
Group of tissues form a cell , and a group of cells form an organ 
        
             
        
        
        
Your answer should be C. bend when passing from air to water. Hope this helps! =^-^= If you need an explanation, just let me know.