Question

a piece of copper has a mass of 150 gram? How many atoms does the sample contain.

Answer 1

Find the moles of copper (You're going to need your periodic table to cancel out grams and find moles).

Once you have your moles of copper, you're going to use Avogadro's number: \[6.022 \times 10^{23}\] to convert from moles to atoms.

Let me know if you get stuck and i'll try and help a bit more. But I gave you the path to take and the necessary information. Just apply it :)

Answer 2

thanks