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Q.
One atom of an element weighs $ 1.8\times 10^{-22}g$ . Its atomic mass is
ManipalManipal 2009Some Basic Concepts of Chemistry
Solution:
Mass of 1 atom $=1.8 \times 10^{-22} g$
Mass of $6.02 \times 10^{23}$ atoms
$=6.02 \times 10^{23} \times 18 \times 10^{-22} g$
$=6.02 \times 1.8 \times 10\, g$
$=108.36\, g$
Hence, atomic mass of element $=108.36$.