Chapter 4: Stoichiometry and the Composition of the Earth

 

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Section 4.3 NaCl Reaction (p. 166-172)
This tutorial illustrates the process by which a metal and a nonmetal combine to form a binary ionic compound, as seen in the reaction of sodium metal and chlorine gas.


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Section 4.4 Avogadro's Number (p. 173-180)
This tutorial provides a step-by-step explanation of how to use Avogadro's number to convert from moles to molecules or atoms and visa versa. Includes practice exercises.


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Section 4.5 Balancing Equations (p. 181-184)
Review the procedure for balancing the mass of reactants on the left side of the equation against the mass of products on the right side. Includes practice exercises.


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Section 4.6 Percent Composition (p. 184-190)
This tutorial provides a step-by-step explanation for finding the percent composition of elements in a substance from the molecular formula, and for finding the empirical formula from the percent composition data. Includes practice problems.


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Section 4.7 Carbon Cycle (p. 190-193)
This tutorial shows how carbon is cycled and stored within Earth's environment.


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Section 4.8 Limiting Reactant (p. 193-198)
Learn to identify the limiting reactant for a reaction and to determine the maximum yield of products. Includes worked examples and practice exercises.


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