What is the relationship between mole, Avogadro number and mass?
Answers
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Answer:-
➡Avogadro's number is a proportion that relates molar mass onan atomic scale tophysical mass on a human scale.
➡Avogadro's number is defined as thenumber of elementary particles (molecules, atoms, compounds, etc.) permole of a substance.
➡It isequal to6.022×1023 mol-1 and is expressed as the symbol NA.
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Answer:
The mole allows scientists to calculate the number of elementary entities (usually atoms or molecules) in a certain mass of a given substance. Avogadro’s number is an absolute number: there are 6.022x1023 elementary entities in 1 mole. This can also be written as 6.022x1023 mo1-1. The mass of one mole of a substance is equal to that substance’s molecular weight. For example, the mean molecular weight of water is 18.015 atomic mass units (amu), so one mole of water weight 18.015 grams. The chemical changes observed in any reaction involve the rearrangement of billions of atoms. It is impractical to try to count or visualize all these atoms, but scientists need some way to refer to the entire quantity. They also need a way to compare these numbers and relate them to the weights of the substances, which they can measure and observe. The solution is the concept of the mole, which is very important in quantitative chemistry