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Generally yes (the law of definite proportions); as exceptions - nonstoichiometric compounds.
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What is the ratio of nitrogen atoms N to oxygen atoms O in a compound with the formula N2O5 is the same as the compound NO2?
These ratios are not identical. In N2O5 the ratio is 2/5. In NO2 the ratio is 1/2.
Which best describes john Dalton's observations of elements in any given compound?
Dalton discovered that the atoms that combine to form compounds are distinguished from one another by their atomic weights. He also learned that all atoms of a given element are identical.
What are the elements of compounds?
The elements of a compound are the simplest components that it can be broken down into by chemical means. The atoms of an element have the same number of protons and electrons and have the same behaviors.
What is an example of the law of constant composition?
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.
What law states that if two or more compounds are made up of the same two elements the ratio of the masses of the second element is always a ratio of small whole numbers?
In a molecule there will always be integer numbers of a certain atom, and you can never have 3.5 oxygen atoms or 2.493 chlorine atoms in a compound. Atoms are singular units of molecules. Therefore a ratio of integers is always present for all types of atoms in a molecule.
Is a chemical compound always made of the same atoms in the same ratio?
yes
A is a substance composed of two or more kinds of atoms always in the same ratio?
a compound
A substance composed of two or more kinds of atoms always in the same ratio?
Such a substance is especially called a compound.
What does a compound have that is always in a particular compound?
Same type of atoms.
What characteristics are not included in John Dalton's description of the atom?
Atoms exist only on Earth. Atoms are smaller than quarks. (apex)
What is the ratio of nitrogen atoms N to oxygen atoms O in a compound with the formula N2O5 is the same as the compound NO2?
These ratios are not identical. In N2O5 the ratio is 2/5. In NO2 the ratio is 1/2.
What is the ratio of atoms?
A chemical formula gives the number ratio of the different kinds of atoms present in the compound. This means that the ratios are the same if you count in individual atoms, dozens of atoms, or molecules of atoms.
Which type of substance is composed of two or more different kinds of elements always in the same ratio?
Two or more different elements that are chemically combined in a definite ratio is a compound. Based on the nature of the bonds, it can be called an ionic compound (i.e. atoms bonded together by ionic bonds) or an molecular compound (i.e. atoms bonded together by covalent bonds).
John Dalton observed that elments always combine in the same ratio to form a particular?
compound
If matter is made up of two or more elements and has the same ratio of atoms no matter the amount of the substance it is an?
If matter is made up of two or more elements and has the same ratio of atoms no matter the amount of the substance it is a compound.
Who proposed the theory that the elements in a compound always combine in the same fixed ratio?
Dalton
What is the ratio of elements in a compound?
The stoichiometry is governed by the laws of definite proportions and multiple proportions.
