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In chemistry, the law of definite proportions and also the elements, sometimes called Proust's Law, states that a chemical compound always contains exactly the same proportion of elements by mass. An equivalent statement is the law of constant composition, which states that all samples of a given chemical compound have the same elemental composition.
This observation was first made by the French chemist Joseph Proust based on several experiments conducted between 1798 and 1804. Based on such observations, Proust made statements like this one, in 1806:
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∙ 13y ago
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∙ 10y agoIn any pure chemical substance that contains more than one element, the mass ratios between any two of its constituent elements is always the same.
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∙ 15y agoLaw of constant composition - Law that states samples of a pure compound always contain the same elements in the same mass proportion.
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∙ 11y agoThe law of definite composition (proportions) states that the proportions of the elements in a compound are fixed. In other words, water is always H2O and carbon dioxide is always CO2.
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∙ 11y agoThe law of definite composition states that the elements in a given compound are always combined in the same proportion by mass.
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∙ 7y agoA simple definition is: a chemical compond has the elemental components in a fixed ratio.
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Does a mixture obey the law of definite composition?
yes it dose.
Do compounds have variable composition?
No. Compounds have a definite composition, therefore they are pure substances. For example, water always has the formula H2O, sodium chloride (common table salt) always has the formula NaCl, and glucose (blood sugar) always has the formula C6H12O6.
Does Brick have a definite chemical composition?
No. The clay used for bricks is not a pure substance.
Why is the chemical composition of a mineral important?
it means a naturally-occaring, inorganic solid that has a crystal structure and a definite chemical composition
36 A naturally occurring solid inorganic substance with a definite chemical composition?
A mineral
What is the law that states that a chemical compound always contains the same elements in exactly the same proportions by w eight and mass?
Law of definite proportion, sometimes also called the law of constant composition.
When was the law of definite proportions developed?
The law of definite proportions was developed by Joseph Proust in 1806.
Is the law of definite composition the same as the law of definite proportion?
yes it is .. also called prousts law
What is the chemical equation of the law of definite composition?
This law hasn't a chemical equation !
Does a mixture obey the law of definite composition?
yes it dose.
Is it true that a chemical has a definite composition?
Yes, after the Law of definite proportions; but now it is clear that this law is not applicable to all known chemical compounds.
Who developed the law of Definite Proportions?
Joseph Proust
What theory states that a given compound will always contain exactly the same proportion of elements by weight?
Law of definite proportion or law of definite composition.
Examples of the law of definite composition?
formation of water and hydrogen peroxide , carbon dioxide and carbon monoxide are the big examples of law of definite proportion
What is the difference between law of conservation of mass and law of definite composition?
Well the difference is, TRIANGLE IS THE ANSWER TO EVERYTHING!
Is the law of definite proportions says that the composition of a compound always the same?
always the same
What you mean by nonstoichiometry?
The chemical composition of nonstoichiometric compounds do not respect the law of definite proportions.
