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Q.

State law of conservation of mass and energy ?

Tags: education, science, environment
Asked by rekha v, 01 Apr '10 05:03 pm
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Answers (3)

1.

In a closed system, mass and energy are conserved. In all chemical reactions, mass is conserved and energy is conserved without any mass - energy conversion, but in nuclear reactions, mass and energy taken as a system are conserved.
Answered by Venkateswaraswamy Swarna, 01 Apr '10 05:13 pm

 
  
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2.

States are devoid of it now. They have their own laws.
Answered by nkpathak, 02 Apr '10 03:09 pm

 
  
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3.

The law of conservation of mass

The crucial transformation of chemistry from a collection of vain hopes and alchemical

meddlings to a corpus of reliable quantitative knowledge hinged on the contributions of the

French aristocrat Antoine-Laurent Lavoisier (and his wife, Marie-Anne), shortly before he

lost his head to the guillotine at the height of the Reign of Terror. Lavoisier opened the

door to quantitative chemistry by establishing that the transformations of matter, which

until his day had been described largely by a miasma of uncoordinated reports, could be

investigated quantitatively by measuring the masses of substances consumed and produced in

reactions. The most significant observation he made was that, even though one substance is

transformed into another during the course of a reaction, the total mass of the products is

the same as the total mass of the reactants. The implication of this observation is that,

although the identity of the substances may c ...more
Answered by KARTIKAY SHARMA, 01 Apr '10 05:26 pm

 
  
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