Answer:
who lives in Barclays what?? this makes no sense
Explanation
 
        
             
        
        
        
81. There is 1 carbon, 2 chlorine and fluorine atoms in Freon 12. To draw them it forms a cross with C in the middle and Cl and F both on the opposite side. 
     Cl
      l
F - C- F
      l
     Cl
82. Freon-12 and Freon-14 are called halocarbons or just halides. 
        
                    
             
        
        
        
M CH₃COOH: 12u×2 + 1u×4 + 16u×2 =<u> 60u</u>
m 9CH₃COOH: 60u×9 = <u>540u</u>
<em>(1u ≈ 1,66·10⁻²⁴g)</em>
-----------------------------
1u ------- <span>1,66·10⁻²⁴g
540u ---- X
X = 540</span>×<span>1,66·10⁻²⁴g
<u>X = 896,4</u></span><span><u>·10⁻²⁴g
</u></span>
        
             
        
        
        
Answer:
because of the dry season
Explanation:
the water evaporate from the ground which is taken by the sun for the process of rainfall
 
        
             
        
        
        
its is important because without cells we wouldn't know about reproduction and they are different types of cells such as plant cells egg cells sperm cells ect without them we wouldn't know about how we are born