Answer:
We have 8.4 * 10^10 nickel atoms
Explanation:
step 1: Data given
Mass of nickel = 8.30 * 10^-12 grams
Number of avogadro = 6.02 * 10^22 / mol
Atomic mass nickel = 58.69 g/mol
Step 2: Calculate moles nickel
Moles nickel = mass nickel / atomic mass nickel
Moles nickel = 8.30 * 10^-12 grams / 58.69 g/mol
Moles nickel = 1.4*10^-13 moles
Step 3: Calculate nickel atoms
Nickel atoms = moles nickel * number of Avogadro
Nickel atoms = 1.4 * 10^-13 moles * 6.02 * 10^23 /mol
Nickel atoms = 8.4* 10^10 atoms
We have 8.4 * 10^10 nickel atoms
