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hello and welcome to physics
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catalyst.com let us now begin with our
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question our question states that the
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unit of length convenient on the atomic
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scale is known as an angstrom and is
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denoted by this letter the symbol now
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one angstrom is equal to 10^ - 10
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m the size of hydrogen atom is about5
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angstrom what is the total Atomic volume
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in a mole of hydrogen
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atoms let us now look at our
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solution now it is given in the question
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that radius of hydrogen
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which is equals to 0.5 into 10 ^ - 10
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m now if you assume an atom to be
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shape then volume of one
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atom is equals to 4x3 piun R
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Cub now to find the volume of one mole
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of hydrogen atoms we would have to
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multiply the volume of one atom with
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that of avagadro number so volume of one
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4x3 < R Cube where this n is avagadro's
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number now we know that the value of
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this avagadro number is n is equal to
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6.23 into 10 the power
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23 and we obviously know the value of pi
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and the value of of radius of atom is
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given in our question so putting in all
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these values we get volume of 1 mole of
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hydrogen atoms is equals to
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into 0.5 into 10 ^ - 10 whole Cube now
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on calculating volume of 1 mole of
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3.1 54 into 10^ - 7 m Cub which is
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to 3 into 10^ - 7 m Cub so this is your
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answer thanks for watching
