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One mole of different compounds have different masses but have same number of molecules because that is the definition of a mole - a mole is about 6.022x1023 molecules of any particular material - and is normalized to the mass of Carbon-12.

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Q: Why one mole of different compounds have different masses but have same number of molecules?
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Why does 10 g nitrogen gas contain the same number of molecules as 10 g of carbon monoxide?

These compounds have equal molar masses.


Two molecules with the same number and type of atoms but have them in a different arrangement or order are called?

They are different molecules--They are, however, related by the law of multiple proportions. This law states that when different compounds are formed by a combination of the same elements, different masses of one element combine with the same relative mass of the other element in a ratio of small whole numbers. They are different molecules--They are, however, related by the law of multiple proportions. This law states that when different compounds are formed by a combination of the same elements, different masses of one element combine with the same relative mass of the other element in a ratio of small whole numbers.


180 g of glucose and 342 g of sucrose have same number of molecules but different number of atoms. Explain?

They are different compounds with different molecules:- the chemical formula of glucose is C6H12O6- the chemical formula of sucrose is C12H22O11


What are the compounds elements of carbohydrates?

Carbohydrates are macro molecules made by bonding a large number of glucose molecules. They are organic compounds. They contain elements Carbon, hydrogen and oxygen.


How many different molecules can water dissolve?

It is often mentioned that water can dissolve a huge variety of compounds of varying chemical characteristics. Declaring a strict number of such molecules would be almost impossible. It should be said that these compounds cannot be put into a single category. At first, let's take a look at ionic compounds. Being a polar solvent, water can dissolve many ionic compounds by dissociating them into seperate ions and creating hydrated spheres. Eventhough, there are some ionic lattices that do not dissolve, which we usually call as precipitates. When it comes to covalent compounds, many ones with asymmetric polar bonds are dissolved in water such as alcohols, amines etc. In rare cases, non polar compounds also partially dissolve in water, such as bromine and iodine. Generally, it can be also said that, molecules with relatively higher molecular masses, show less tendency to dissolve in water.


Why are there more organic compounds than inorganic compounds?

AnswerOne reason for the very large number of organic molecules (compared to the total number of inorganic compounds) is due to constitutional isomerism. Constitutional isomerism are different compounds that have the same molecular formula but differ in their connectivity, that is, in the sequence in which their atoms are bonded together.


What has different atomic masses?

Different atoms and elements that have different number of protns, neutrons and electrons.Duh!


What Combinations of atoms that contain different elements?

An 'atom' contains only protons, neutrons and electrons, and the number of those determine what element or isotope of that element the atom is. It is therefore impossible to say an atom can 'contain' an element.


What did amedeo avogadro?

He published a paper called (translation) "Essay on determination the relative masses of the elementary molecules of bodies and the proportions by which they enter these combinations". It is from his work that we get 'Avogadro's Number' the number of molecules/atoms in a mole.


What mineral do all crystals contain?

Only if they are hydrates. Different compounds can combine with a discrete number of water molecules, such as, for example copper.


Is carbohydrate a element or compound?

Carbohydrates are large molecules. They are made up of a large number of glucose molecules bond together. So they are not elements, they are compounds.


10 kinds of isotopes and their application?

Different atoms of the same element possessing different atomic masses but having same atomic number are known as Isotopes. Since the isotopic atoms have the same atomic number, they must contain an equal number of protons. As their atomic masses are different, there must be a difference in the number of neutrons they possess. They will show similar chemical properties but their physical properties will be different due to different masses.