Final answer:
To find the number of atoms of titanium in 0.125 mol of a substance, multiply the moles by Avogadro's number.
Step-by-step explanation:
The question asks for the number of atoms of titanium in 0.125 mol of each substance. To calculate this, we need to use Avogadro's number, which states that 1 mol of any substance contains 6.022 x 10^23 particles (atoms or molecules). Given that there are 0.125 mol, we can multiply this value by Avogadro's number to find the number of atoms.
Number of atoms of titanium = 0.125 mol x 6.022 x 10^23 atoms/mol = 7.528 x 10^22 atoms