Question

The atomic mass of the element platinum (Pt) is 195.08 amu. How many atoms of platinum are in 195.08 grams?(1 point)
Responses

3.087×1021
atoms
3 point 0 8 7 times 10 to the 21th power atoms

1.175×1026
atoms
1 point 1 7 5 times 10 to the 26th power atoms

6.022×1023
atoms
6 point 0 2 2 times 10 to the 23th power atoms

1.951×1025
atoms

Answer 1

Number of moles = 195.08 g ÷ 195.08 g·mol⁻¹ = 1.00 mol.
Atoms = 1.00 mol × 6.022×10^23 atoms·mol⁻¹ = 6.022×10^23 atoms.