(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I'm having trouble with this. I need to calculate the number of atoms in iron. How do I do this? For example if I had 1 KG of iron, how many atoms are in it?

2. Relevant equations

I need to give an answer in scientific notation

A x 10^B

A being 1 significant figure, and B being whole number

3. The attempt at a solution

No idea what to do.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Calculating the number of atoms in X Kilograms of iron

**Physics Forums | Science Articles, Homework Help, Discussion**