Question

How many moles of nickel (Ni) is 3.88 x 1023 atoms of nickel?

O.679 moles Ni
O .644 moles Ni
O.638 moles Ni
O.762 moles Ni

Answer 1

Step-by-step explanation:

We can use to convert the given number of atoms of nickel to moles.

1 mole of any element contains 6.022 x 10^23 atoms of the element

So, the number of moles of nickel can be calculated as:

moles of Ni = (number of atoms

moles of Ni = 3.88 x 10^23 / 6.022 x 10^23

moles of Ni = 0.644

Therefore, the answer is option B: 0.644 moles Ni.