CHEM 130 Chapter Notes - Chapter 5.9-5.11: Balance Equation, Limiting Reagent

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27 Oct 2016
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Formulas of compounds can"t be changed when balancing equations. 5. 10 - stoichiometric calculations - amounts of reactants and products. Coefficients in chemical equations represent number of molecules,not mass. Mole ratio - ratio between the amounts in moles of any two compounds. Convert known mass of reactant/product to moles. Use balance equation to set up appropriate mole ratios. Use appropriate mole ratios to calculate number of moles of involved in a chemical reaction reactant/product. 5. 11 - concept of limiting reactant products made the most numbers in balanced equations. Molecule that is present in largest number limits the number of possible. Stoichiometric mixture - contains relative amounts of reactant that match. To determine how much product can be formed from given mixture of. Sometimes, mixtures of reactants can be stoichiometric - all reactants run out. Limiting reactant - reactant that runs out first limits amount of products.

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