How many electrons are there in 2 g of H2 
       
      
                
     
    
    
    
    1  answer:
            
              
Answer: 
 6.02 x 10²³ electrons 
Explanation: 
Given parameters:  
Mass of H₂  = 2g 
Unknown:  
Number of electrons = ? 
Solution:  
To find the number of electrons, we must determine the number of moles of H₂ first. 
  Number of moles  = 
   Molar mass of H₂   = 2(1)  = 2g/mol 
 Number of moles  = 
1 mole of a substance contains 6.02 x 10²³ particles
 the particles can be protons, neutrons, electrons 
 So, 
   2g of H₂ will contain  6.02 x 10²³ electrons.  
 
                                
             
         	
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