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A compound always contains the same elements in the same proportions by mass.
This is a formal way of saying that a compound always has the same formula, no matter how it is made or where it is found.
Wiki User
∙ 9y ago
Wiki User
∙ 14y agofor example in water (H2O), 2 hydrogen atoms combine with 1 oxygen atom so their mass ratio is 2;16 or 1;8, that means 1g hydrogen always requires 8g of oxygen to form the 9g of water.
Wiki User
∙ 13y agoIt is impossible to break apart a compound.
Wiki User
∙ 14y ago- The mass ratio of carbon to oxygen in carbon dioxide is always 3:8.
- In a molecule of water, the mass of oxygen is always 8 times the mass of hydrogen.
Wiki User
∙ 13y agoIn any example of any specific chemical substance, the proportions by mass of elements are always the same.
Wiki User
∙ 11y agolaw of conservation of mass
Wiki User
∙ 11y agoYes
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The first chemist to formally state the law of constant composition was?
Proust
Who developed the law of definite composition?
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:
Does a mixture obey the law of definite composition?
yes it dose.
What are 2 pure substances?
A pure substance is a homogeneous chemical substance which means its composition is constant and its properties are consistent too. Some examples of this kind of substances are water, baking soda and sucrose.
Is butter a mixture or a compound?
Butter is a mixture: Its atomic composition is not always constant from one source to another.
If Law of constant composition true for all types of compounds?
No,Law of constant composition is valid only for compounds made from the specified isotopes of the element.
Is the law of constant composition true for all types of compounds?
No, one example would be wüstite. Please see the link.
Does compound follow the law of constant composition?
because 789
The first chemist to formally state the law of constant composition was?
Proust
What are the drawbacks of law of constant composition?
kill kill king king
Atoms of different elements combine in whole number what?
That is the law of constant composition.
What is meant by the law of constant composition for compounds?
The law of constant composition for compounds is a law in chemistry according to which any given compound always contains the same component elements in the same ratios, by mass. The ratios do not depend on where the compound comes from or the way in which it was produced.
Evidence that supports the law of constant composition?
A piece of evidence that is commonly used to prove the law of constant composition is that any sample of water is 88. 71 percent oxygen and 11. 19 percent hydrogen. It was formulated by Joseph Proust.
What would Proust say about the composition of all carbon dioxide molecules?
He would insist that all Carbon Dioxide molecules have the same composition, by his Law of Constant Composition.
Who stated the law of constant composition?
Joseph Louis Proust (1754-1826), In 1799 Proust stated that "Compounds always contain the same elements in a constant proportion by mass." This statement is now called law of definite composition or the law of constant proportion.
Which is supported by the law of constant composition?
In water, there is always 8 times the mass of oxygen than there is of hydrogen.
An aircraft taxiing at a constant speed is an example of what law?
Newtons first law
