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Alja [10]
3 years ago
6

You find an unknown substance, which has a density of 10.0 g/ml, and occupies a volume of 80.0 ml. What is the mass of the unkno

wn?
Chemistry
1 answer:
Svetlanka [38]3 years ago
4 0

Answer:

Density=mass / volume.

10= mass /80.

mass=10×80.

=800g

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Answer:

The value is  K  =  8*10^{61}

Explanation:

From the question we are told that

    The equation is  2 Cr  +  3Pb^{2+} \to 3Pb + 2Cr^{3+}

     The  temperature is  T = 25^oC =  298 K   [room  \ temperature ]

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Here  n  is  the no of electron  with value n = 6

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This Gibbs free energy can also be represented mathematically as

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From above

=>  K  =  antilog^{\frac{G}{ RT} }

Generally  antilog =  2.718

=>K  =  2.718^{\frac{3.5 *10^5}{ 8.314* 298} }

=>   K  =  8*10^{61}

       

         

       

         

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