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horrorfan [7]
3 years ago
14

What type or process is involved in going from elements to compounds and vice versa

Chemistry
1 answer:
Deffense [45]3 years ago
7 0
Mixtures to pure substances: separation processes 
<span>Pure substances to mixtures: mixing </span>

<span>Both are physical changes, since most of those processes do not require chemical changes in the separation processes.</span>
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What inorganic molecule is carbon normally found in?
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When utilizing a transmission electron microscope, why is it necessary to stain the specimen with heavy metal salts?
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Two equilibrium reactions of nitrogen with oxygen, with their corresponding equilibrium constants (Kc) at a certain temperature,
7nadin3 [17]

Answer:

Kc = 1.54e - 31 / 2.61e - 24

Explanation:

1 )   N_{2}(gas) + O_{2}(gas)\rightarrow 2NO(gas)  ; Kc = 1.54e - 31

2)   N_{2}(gas) + 1/2O_{2}(gas)\rightarrow N_{2}O(gas)  ; Kc = 2.16e - 24

   upon reversing  ( 2 )  equation

     N_{2}O(gas)\rightarrow N_{2}(gas) + 1/2O_{2}(gas)   Kc = 1/2.16e - 24  

    now adding 1 and reversed equation (2)

       N_{2}(gas) + O_{2}(gas)\rightarrow 2NO(gas)

      N_{2}O(gas)\rightarrow N_{2}(gas) + 1/2O_{2}(gas)

   we get ,

                  N_{2}O(gas) + 1/2O_{2}(gas)\rightarrow 2NO(gas)  Kc = 1.54e-31 × 1/2.61e - 24

       equilibrium constant of equation (3) is -

            Kc = 1.54e - 31 / 2.61e - 24

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2 years ago
Will 1 gram of sugar or 1 gram of salt dissolve more quickly which one
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