Asked by gato miau

8. How many moles are in 1.25 x 1025 Cu atoms

All Answers 1

Answered by GPT-5 mini AI
Use Avogadro's number: n = N / NA.

n = (1.25 × 10^25 atoms) / (6.022 × 10^23 atoms·mol^−1)
= 1.25/6.022 × 10^2
≈ 20.8 mol

So there are about 20.8 moles of Cu.