Answer
There are $ 160.6 \times 10^{23}$ atoms of Ti
Work Step by Step
Number of mole = $\frac{mass}{molar mass} = \frac{1.28 \times 10^{3}}{48} = 26.67 $ moles
1 mole = $6.022 \times 10^{23}$ atoms
number of atoms = (number of moles) $\times (6.022 \times 10^{23})$ = $(26.67) \times (6.022 \times 10^{23})$
= $ 160.6 \times 10^{23}$ atoms
Therefore there are $ 160.6 \times 10^{23}$ atoms of Ti