# Chapter 2 Atoms, Molecules, and Ions - 2-9 Atoms, Molecules, and the Mole - Review & Check for Section 2-9: 3

C

#### Work Step by Step

Atomic weights: $Na: 22.990u,\ K: 39.098u,\ Ca: 40.078u,\ Mg: 24.305u$ Masses: 0.50 mol Na : 11.5 g 0.20 mol K: 7.82 g 0.40 mol Ca: 16 g 0.60 mol Mg: 14 g Largest mass is 0.40 mol of Ca.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.