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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?
C; 1.3 x 10-17 g