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Elodia [21]
3 years ago
10

3. Does matter increase in mass when mixed with another substance? a Yes b. No

Chemistry
1 answer:
Vilka [71]3 years ago
6 0

Answer:

b. No

Explanation:

The question above is related to "The Law of Conservation of Mass." This law states that <u>mass is neither created nor can it be destroyed.</u> Even if a particular matter will be mixed with another substance or it undergoes chemical reaction,<u> the mass of the matter will remain the same.</u> Even with a change in phase, the mass of the matter will remain the same.

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Why oxygen gas is very easy to compress when pressure is applied?
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Answer:

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Explanation:

When gas is compressed, the particles are forced much closer together, allowing a huge amount of particles to fit in a small space.

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4 years ago
Given the equilibrium constants for the following two reactions at a 298K:NiO(s) + H2(g) ⇌ Ni(s) + H2O(g) Kc=40NiO(s) +CO(g) ⇌ N
shusha [124]

Answer:

The value  is  K_C =  \frac{40}{600}

Explanation:

From the question

   The equation given is  

            NiO(s) + H2(g) ⇌ Ni(s) + H2O(g) Kc=40          (1)

            NiO(s) +CO(g) ⇌ Ni(s) +CO2(g) Kc=600         (2)

Generally the reverse of the second equation as shown below

            Ni(s) +CO2(g) ⇌  NiO(s) + CO(g)                 (3)

The equilibrium constant becomes    K_c  ' =  \frac{1}{600}  

 Now  adding  1  and  3 we obtain

      NiO(s) + H2(g)+ Ni(s) +CO2(g) ⇌ Ni(s) + H2O(g)+NiO(s) + CO(g)        

               CO2(g) + H2(g) ⇌ CO(g) + H2O(g)

Hence the equilibrium constant for the resulting equation is mathematically evaluated as

           K_C =  K_c' *  K_c

=>       K_C =  \frac{1}{600}  *  40

=>         K_C =  \frac{40}{600}

       

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