How many individual Ni atoms are contained in 1.25 grams of Ni? (

Question

I don't know if I'm missing something or not, but I've tried this question so many times. My answer is always wrong. I'm using the correct conversion formula, but my answer is always wrong.

Answer 1

Hi Rachel,

To answer this question, we first need to divide by the molar mass of Ni to get the moles of Ni. After that, we will multiply by Avogadro's number to find the number of Ni atoms.

1.25 grams of Ni * (1 mol of Ni / 58.7 g) * (6.022 * 10^(23) atoms / 1 mol of Ni) = 1.28 * 10^(22) atoms of Ni