1. Arrange the following in order of increasing number of moles of Cl.

I. 1 g of KCl (74.6 g/mol)
II. 10 g of MgCl₂ (95.2 g/mol)
III. 0.1 mol of AlCl₃

A. II < I < III
B. III < I < II
C. I < II < III
D. II < III < I
E. III < II < I

2. What is the mass in grams of 2.0×10⁵ atoms of naturally occurring potassium?