Q.
State law of conservation of mass and energy ?
Asked by rekha v,
01 Apr '10 05:03 pm
Earn 10 points for answering
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
Report abuse
Useful
(0)
Not Useful
(0)
Your vote on this answer has already been received
2.
Report abuse
Useful
(0)
Not Useful
(0)
Your vote on this answer has already been received
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
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
Report abuse
Useful
(0)
Not Useful
(0)
Your vote on this answer has already been received