Chapter9



					Be able to do: STOICHIOMETRY PROBLEMS including writing balanced chemical equations from word equations, *identifying knowns and unknowns, converting from grams to moles, moles of known to moles of unknown, moles of unknown to grams of unknown* or  converting to heat/enthalpy (kJ)
			Practice Problems for Test Chapter 9

1. For the reaction C + O2 ---> CO2, 394 kJ/mole are produced when carbon dioxide forms. How much heat is produced when 10 grams of carbon are burned? answer:  328 kJ

	2. Balance the following reactions then *identify the type of reaction* (see HOMEWORK #3) KOH + AlCl3   ---> Al(OH)3 + KCl CH4 + O2 ---> CO2 + H2O K + H2O --> KOH  + H2 SO3 + H2O  ---> H2SO4 N2 + H2 ----> NH3 + 22kcal answers: 3:1:1:3, double displacement;   1:2:1:2 combustion;  2:2:2:1 single displacement;  1:1:1 synthesis or composition; 1:3:2 synthesis or composition (exothermic reaction)

				Be able to define: COEFFICIENT BALANCED CHEMICAL EQUATION SUBSCRIPT ENERGY = ENTHALPY or HEAT ENERGY EXOTHERMIC ENDOTHERMIC MOLE DISSOLVE CATALYST ACTUAL vs THEORETICAL YIELD MOLE RATIO MOLE GRAM (MASS) Gram Formula Weight GFW CALORIMETER (see experiment about burning nuts)


		Other Links which may help you: Chemtutor or Stoichiometry Example

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