The fridge part can, just not the freezer, I think.
        
             
        
        
        
Atoms cannot be created or destroyed by chemical reactions. They just have a some bonds rearranged is all. 
 
        
             
        
        
        
I suppose it false, since the oxidation involves the loss or removal of the electrons such forth it does not gain electrons.
        
             
        
        
        
It is a heterogeneous mixture <span>
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The volume of H₂ evolved at NTP=0.336 L
<h3>Further explanation</h3>
Reaction
Decomposition of NH₃
2NH₃ ⇒ N₂ + 3H₂
conservation mass : mass reactants=mass product
0.28 NH₃= 0.25 N₂ + 0.03 H₂
2 g H₂ = 22.4 L
so for 0.03 g :
