Chapter 5 questions: 1. Predicting Solubility How do you determine the solubilit

Question

Chapter 5 questions:

1.  Predicting Solubility

How do you determine the solubility of the following compounds?

Ca3(PO4)2

CaCl2

Na3PO4

2.  Classifying Reactions

When looking at a chemical reaction, how can you determine which of the three categories it fits into (precipitation, acid-base, or redox)?

Chapter 6 questions:

3.  Coefficients and mass

What value are coefficients in balanced chemical equations? How does this relate to mass?

4.  The Mole

Describe the concept of the mole. Define the mole, and then explain what a mole is in everyday language.  Why do chemists use this huge number?  Why don

Explanation / Answer

4.

Mole is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as the amount of any substance that contains as many elementary entities (e.g., atoms, molecules, ions, electrons) as there are atoms in 12 grams of pure carbon-12 (12C), theisotope of carbon with relative atomic mass 12. This corresponds to the Avogadro constant, which has a value of 6.02214129(27)

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