Question

if mass of a single atom of an element is 1.245 into 10 raise to power minus 22 gram find the atomic mass of element​

Answer 1

Answer:

Explanation

Hope this will be enough to clear your doubt

Answer 2

Answer:

The atomic mass of an element​ is 75 AMU.

Explanation:

Given,

Mass of a single atom of an element (m) = 1.245 × 10⁻²² g.

To find,

The atomic mass of an element (M)

Concept,

Atomic mass: Mass of one mole of an atom is known as atomic mass.

Avagadro number($N_A$): It is defined as a number of units present in one mole of a substance, and is equal to 6.023 × 10²³.

We know that one mole of an atom consists of Avogadro number of particles($N_A$)

So, Atomic mass = mass of single atom × Avagadro number.

Calculation,

As from above Atomic mass(M) = mass of a single atom(m) × Avagadro number($N_A$).

Here, m = 1.245 × 10⁻²², $N_A$ = 6.023 × 10²³

Hence, M = 1.245 × 10⁻²² ×  6.023 × 10²³

M = 74.9 atomic gram units. ≈75 AMU.

Therefore, the atomic mass of an element​ is 75 AMU.

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