calculate mass of 3.011×10^23 number of nitrogen atoms
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Answered by
237
molar mass of nitrogen is 14gm and half mole of nitrogen will have half the mass as that of molar mass. therefore this will have mass equal to 7gm.
as 3.011*10^23 is half mole.
as 3.011*10^23 is half mole.
Answered by
563
we know that ....
1 mole of atoms = 6.022× 10 ^23 atoms
so
6.022x10^23 atoms = 1 mole
1 atoms = 1/6.022×10^23 mole
3.011x10^23 atoms =
=3.011 ×10^23/6.022×10^23
=1/2 mole
and we also know that ....
1 mole of atom = atomic weight
so.
1 mole of nitrogen.= 14 grams
1/2 mole of nitrogen = 1/2x 14 =7grams
so..mass of nitrogen atom = 7grams..ans
1 mole of atoms = 6.022× 10 ^23 atoms
so
6.022x10^23 atoms = 1 mole
1 atoms = 1/6.022×10^23 mole
3.011x10^23 atoms =
=3.011 ×10^23/6.022×10^23
=1/2 mole
and we also know that ....
1 mole of atom = atomic weight
so.
1 mole of nitrogen.= 14 grams
1/2 mole of nitrogen = 1/2x 14 =7grams
so..mass of nitrogen atom = 7grams..ans
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