Answer:
2.645
Explanation:
Rate of diffusion formula: 
Sqrt(mass2/mass1) 
>>sqrt(14/2)
(Note:Hydrogen must exist in dwiatomic, [H2]) 
 
        
             
        
        
        
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Answer:
Knowing that boron has an atomic mass of 10,811 means that all boron isotopes on average weigh 10,811 u.
Explanation:
The atomic mass of an atom is the mass of the atom measured in u (unified atomic mass unit), although we can also express it as Da (Dalton's unit)
Atomic mass refers to the average mass that all isotopes of that element have.
When we speak of isotopes we are referring to the element itself but with a different number of neutrons, which makes it modify its mass number.
 
        
             
        
        
        
Answer:
Rain forest 
Explanation:
The rainforest has a very diverse animal kingdom 
 
        
             
        
        
        
The quality or state of being volcanic.