Question

what is a atomic mass and avagardo's number?

Answer 1

hello@

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here is u r answer ##

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ANSWER :

DEFINE : ATOMIC MASS AND AVAGARDO'S NUMBER .

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1. ATOMIC MASS -

THE ATOMIC MASS OF AN ELEMENT IS A NUMBER WHICH STATES THAT HOW MANY TIMES THE MASS OF ONE ATOM OF AN ELEMENT IS HEAVIER THAN 1/12 th MASS OF ONE ATOM OF CARBON -12.

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ATOMIC MASS OF AN ELEMENT =

MASS OF ONE ATOM OF THE ELEMENT.
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1/12 ×mass of one atom of carbon-12.

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ACTUAL MASS OF 1 ATOM OF AN ELEMENT = ATOMIC MASS IN AMU ×1.66×10^-24g.

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AVAGARDO'S NUMBER :-

THE NUMBER 6.023 ×10^23 IS CALLED AVAGARDO'S NUMBER.

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I HOPE HELP U..
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#RISHU ##

Answer 2

Your answer :

Atomic Mass :

Atoms are very small particles so there actual mass is very small and it is difficult to determine their actual mass. Therefore it is found convenient to determine its mass with some reference. The masses thus obtained are called as relative atomic masses.

Relative Atomic Mass is the average mass of the atoms of an element as compared to 1/2 the mass of one C-12 atom.

The references which were chosen earlier was hydrogen because of its lighter weight but while using hydrogen it was found that masses of atoms of other element came to be fractional therefore the reference was shifted to oxygen.

Atomic Mass Unit (A.M.U) may be defined as mass of C-12/12 atom.

Avagardo's Number :

1 mole is a collection of 6.022×10^23 particles. These particles can be atoms, molecules, ions etc.

Example : 1 mole of hydrogen atom = 6.022×10^23 atoms of hydrogen.

Example : 1 mole of hydrogen molecule = 6.022×10^23 molecules of hydrogen.

Hope this helps.

Have a nice day =)