How many titanium atoms does it contain? titanium has a density of 4.50g/cm3, a pure titanium cube has an edge length of 2.82 in?

2.82 inches is are equivalent to 7.16 cm.

The volume of the cube;

7.16 * 7.16 * 7.16 = 367.06 cm³

The density of titanium is 4.5 g/cm³

Therefore; mass will be 4.5 * 367.06 = 1651.77 g

1 mole of titanium has 47.867 g

thus, 1651.77 g is equivalent to 1651.77 / 47.867 = 34.507 moles

According to the Avagadro's constant 1 mole = 6.022 * 10∧23 atoms

Therefore, we get 6.022 * 10∧23 * 34.507 = 2.078 * 10∧25 atoms