One million atoms of a particular element have a mass of 1.99 x 10 ^-17 grams.

- How many moles of this element are there?

- What is the molar mass of this element?

- What is the identity of this element?

- How many moles of this element are there?

1000000 atoms (1 mol / 6.022x10^23 atoms) = 1.66 x 10^-18 mol of the element

- What is the molar mass of this element?

Molar mass = 1.99 x 10 ^-17 grams / 1.66 x 10^-18 mol = 11.98 g/mol

- What is the identity of this element?

The identity most likely is closest to carbon which has a molar mass of 12.01 g/mol.