In the Process of Obtaining Lead from PbS, or Galena $\rightarrow$

question 51

Multiple Choice

In the process of obtaining lead from PbS, or galena, the galena is "roasted" (heated in the presence of oxygen) , so that the following reaction occurs: 2PbS(s) + 3O₂(g) $\rightarrow$ 2PbO(s) + 2SO₂(g) If 35.2 g of PbS is mixed with 15.5 g of oxygen, how many grams of PbO should form?

• A)32.8 g
• B)72.1 g
• C)105 g
• D)65.7 g
• E)49.2 g

Know the function and importance of tire pressure and the tire pressure monitoring system (TPMS).

Understand the concept and types of run-flat tires.

Identify and understand the importance of tire markings and tire production date.

Learn about common air loss problems and their solutions.

---

Definitions:

Cation

A positively charged ion that is created when an atom loses one or more electrons, resulting in more protons than electrons.

Propensity

A natural inclination or tendency to behave in a particular way.

Hydrate

A compound that contains water molecules bound to another compound or within its crystal structure.

Benzophenone

A compound used in organic synthesis and as a photoinitiator, characterized by a central benzene ring bonded to two carbonyl groups.