It is effected by diffusion (the power of smell and wind spread) but a solid is not.
        
             
        
        
        
Some of the NH₄+ will combine with the OH- and shift the equilibrium backwards and from NH₄OH to balance the change produced by addition of NH₄+ ions.
        
             
        
        
        
It can possible be you're arteries or also you're intestines with is large and small.
        
             
        
        
        
Answer:
24.7 amu
Explanation:
An isotope is when an element can have different number of neutrons but they have same number of protons.
In order to calculate the average atomic mass with the given information do the following operations:
First change de percentages to fractional numbers, divide by 100.
I like to make a table, to organize all data and I believe is easier to understand.
65/100 = 0.65
35/100 = 0.35
 %	fraction
 65.0	0.65
 35.0	0.35
total100.0	1
Now multiply each mass with their corresponding fraction
24 (0.65) = 15.6
26 (0.35) = 9.1
 %    fraction	uma	uma
 65.0	0.65	24	15.6
 35.0	0.35	26	9.1
total100.0    1          24.7
Finally you add the resulting mass and the units will be in uma.
15.6+9.1 = 24.7
Therefore the average atomic mass of this element will be 24.7 uma.
Check the table in the document attached