Question

the mass of an atom of an element x is 2 × 10^-23 grams calculate its atomic mass

Answer 1

1 atom =2 × 10^-23 grams
=>6.022×10^23 atom=× 10^-23×6.022×10^23
grams atomic mass =12 gram

Answer 2

Answer: The atomic mass of element X is 12.044 grams.

Explanation:

Atomic mass is defined as the mass of 2 mole of an atom.

We are given:

Mass of 1 atom = $2\times 10^{-23}$

According to mole concept:

1 mole of an atom contains $6.022\time 10^{23}$  number of atoms.

Mass of 1 atom is given us as $2\times 10^{-23}g$

So, mass of $6.022\times 10^{23}$ number of atoms is $\frac{2\times 10^{-23}}{1}\times 6.022\times 10^{23}=12.044g$

Hence, the atomic mass of element X is 12.044 grams.