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1.1 The Mole and Molecular Weights (Solution, Pt. 1)

Lesson Summary

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?

3. Hydrogenated vegetable oil is prepared by adding H2 to double bonds of unsaturated fats (one H2 per double bond). How many double bonds are present in a molecule of adrenic acid (M = 332.5 g/mol) if 16.16 g of H2 is required to fully hydrogenate 665 g of the fat?

A. 8
B. 4
C. 2
D. 6
E. 10