Question

How many atoms of copper are in 2.50 mol Cu metal? Group of answer choices I 1.51 x 1023 atoms 2.41 x 1024 atoms 1.51 x 1022 atoms 1.51 x 1024 atoms 2.41 x 102 atoms

Answer 1

We will use Mole concept to find number in 2.50 mol Cu metal of alon male concept I mole = atomic mass of an element - tragadro sol molecular mass of an in an element or molecule Avogadro number of molecules in a molecule. Avagadro number 6.022x10 and Alamic mass of copper - 63-5 unit In given probler atoms in an element to be are e calculated : 1 mole atomic mass Avaladro number of atoms of copper element in an element 1 mole = 63.59 = 6.022 x 102 atoms 1 male = 60222 10 33 atoms 2.50 mele & 2.500 6.022 x 10 2 atoms = 15.055 x 12 joms Rounding off a 15.8 X 10 23 alons 23 15.1 x10 x lo atoms 10 94 = 1.51x10 atoms and 1.5 1 x 1024 atoms of copper are in 2.50 mel Cu Metal