Answer:
The final volume of the balloon is = 28.11 L
Explanation:
Initial pressure  = 1.03 atm = 104.325 K pa
 = 1.03 atm = 104.325 K pa
Initial temperature  = 26 °c = 299 K
 = 26 °c = 299 K
Initial volume  = 22.4 L
 = 22.4 L
Final temperature  = 22 °c = 295 K
 = 22 °c = 295 K  
Final pressure  = 0.81 atm = 82 K pa
 = 0.81 atm = 82 K pa
We know that 

Put all the values in above formula we get

 = 28.11 L
 = 28.11 L
This is the final volume of the balloon.
 
        
             
        
        
        
Answer:
2PbSO4 → 2PbSO3 + O2
Explanation:
in original equation we notice that we have one extra oxygen, which we cannot form a O2 with, so by multiplying everything else by 2, we get 2 extra oxygen
 
        
             
        
        
        
The name given to these electrons are that they are valence electrons or binding electrons as these are directly involved in chemical Bonding and allow for different compounds to be made.