Answer:
mass of nickel is 794.6 Kg
Step-by-step explanation:
Given data:
number of atoms of nickel = 8.15 x 10^27 atoms
mass in Kg = ?
Solution:
We will solve this problem by using Avogadro number. The number 6.022×10∧23 is called Avogadro number and it is the number of atoms in one mole of substance.
molar mass of nickel is 58.69 g/mol
58.69 g nickel = one mole = 6.022×10∧23 atoms
(58.69 g/ 6.022×10∧23 atoms) × 8.15 x 10^27 atoms
9.75 g × 10∧-23 × 8.15 x 10^27
79.46 g × 10∧4
Now we will convert grams into kilo grams by dividing this value on 1000.
79.46 × 10∧4 / 1000 = 794.6 Kg