Question

mass of an atom X is 3.155 into 10 raise to power minus 22 gram what is atomic mass of the element X in atomic mass unit

Answer 1

Answer:

188,922 amu

Explanation:

One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) i.e. $1.67*10^{-27} kg$

So 1 amu = $1.67*10^{-27} kg$

3.155$3.155*10^{-22} kg = \frac{3.155*10^{-22}}{1.67*10^{-27}}\\= 188,922 amu$

Answer 2

mass of an atom X is 3.155 into 10 raise to power minus 22 gram what is atomic mass of the element X in atomic mass unit

answer : 190g/mol

explanation : mass of an atom of X = 3.155 × 10^-22 gram.

so, mass of one mole of atom of X = mass of one atom of X × Avogadro's number

= 3.155 × 10^-22 × 6.023 × 10²³ gram/mol

= 190 g/mol

but we know, mass of one mole of any element is known as atomic mass of that element.

so, atomic mass of element X= 190g/mol