Question

How many moles of Ni are there in a sample of Ni that contains 4.30x10²⁴ atoms?

Answer 1

The number of moles of Ni in a sample containing 4.30×1024 atoms is approximately 7.14 moles, calculated using Avogadro's number.

Step-by-step explanation:

To calculate the number of moles of Ni (nickel) from a given number of atoms, one needs to use Avogadro's number, which is 6.022×1023 atoms per mole. The question asks, "How many moles of Ni are there in a sample of Ni that contains 4.30×1024 atoms?"

The formula to find the number of moles (n) is:

n = Number of atoms / Avogadro's number

Using the formula:

n = (4.30×1024 atoms Ni) / (6.022×1023 atoms/mol) = approximately 7.14 moles of Ni