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Asked by Sidhant Baral Last Modified
Answer 
Pranay Jha
Electronic Engineering
There are two ways to solve it:
1) Knowing the mass of one atomic mass unit:
Mass of one atomic mass unit = 1.66 * 10^-24 gms
Therefore mass of 1000 atoms of nitrogen = Atomic mass of nitrogen * 1000 atoms * Mass of one atomic mass unit
= 14 amu/atom * 1000 atoms *1.66 * 10^-24 g/amu
= 2.32 * 10^-20 g
2) Knowin mass of one mole of atoms
One mole of nitrogen atoms = 6.022 * 10^23 atoms of nitrogen = 14 g of nitrogen
Therefore 1000 atoms of nitrogen = 14 g/(6.023 *10^23) *1000 atoms = 2.32 * 10^-20 gm
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Nisha Kumari
NEET aspirant gives tution in Math & science for class upto 10th, And for Biology class 11&12th also
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