Question

The mass of a single atom of an element is 2.65×10^-23g. Calculate the atomic mass.

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Answer 1

SOLUTION :

$\bf Mass\:\: of\:\: a \:\:single\:\: atom = 2.65 \times 10^{-23}\:g$

$\bf \therefore Mass\:\: of\:\: 6.022\times 10^{-23}\:atoms = 2.65\times10^{-23}\:\:\times 6.022\times10^{23}\\\\= 15.96\: g \:mol^{-1}$

So,

15.96 ≈ 16 g/mole

therefore,

the atomic mass of the element is 16 u.

More info -

Atom : it is the smallest particle of matter which cannot be broken down into smaller particles by chemical reaction.

Molecule : It is the smallest particle of element/compound which has properties of that element or compound.