$3.011\times {10}^{22}$ atoms of an element weights 1.15 g the atomic mass of the element is ____?

$\text{ moles of atoms }=\frac{3.011\times {10}^{22}}{6.02\times {10}^{23}}$

                                  $=\frac{1}{20}$

$\text{ Atomic mass }=\frac{\text{ mass }}{\text{ mole }}$

                              $=\frac{1.15}{\frac{1}{20}}=23$