PPT-Limiting and Excess Reactants

  You have 23 pieces of bread 18 pieces of ham and 29 pieces of cheese How many ham and cheese sandwiches could you make assume 1 ham and 2 cheese in each sandwich mmmm What is the limiting factor in the sandwich making. (aka limiting reagent). Excess Reactant. Theoretical, Actual, and Percentage Yield. Limiting Reactant. (aka limiting reagent). Limiting reactant. : The substance you run out of first, that is consumed first--The reactant that . BIOLOGY. Limiting Factors . Limiting factor: . Anything that prevents a population from growing too . large. Examples? Discuss . Space (disease, predation). Sunlight. Competition (food, water, mates). Reactants. Suppose that you are in a car factory. . In . order to assemble a car, 4 tires and 2 headlights are needed (among other things). . In . this example, imagine that the tires and headlights are reactants while the car is the product formed from the reaction of 4 tires and 2 . Limiting Reagent. You will see the word "excess" used in this section and in the problems. It is used several different ways: . a) "compound A reacts with an excess of compound B" - In this case, mentally set compound B aside for the moment. Since it is "in excess," this means there is more than enough of it. Some other compound (maybe A) will run out first. . Bon Appetite. Suppose you are a chef preparing . F. rench toast for a group of people. You make French toast the way you have always made it: . one egg for every three slices of bread. . You never waiver from this recipe, because the French toast will be either too soggy or too dry. There are 8 eggs and 30 slices of bread in the pantry.. vocab. Limiting reactant- the one that runs out first, limits the amount of product that can be made. Excess- the one with reactant leftovers, not used up completely. What it looks like. C + O. 2. = CO. Concerned with identifying the identity of a substance . Or whether a specific substance is present. i.e. flame test, litmus tests. Qualitative Analysis. Determining the quantity (mass or concentration) of a specific substance present in a sample. . What affects how well a plant grows?. Starter. : why is this tree so much taller than the others?! . Success criteria . name the factors that limit plant growth.. explain how the factors limit plant growth.. What is a limiting . r. eagent?. Steps for . determining the limiting reagent . Percent Yield. TeachWithFergy . Preview File. Please enjoy this preview of your Student Version of the lesson. . Some slides appear blank because they have been removed.. During a chemical reaction, the amount of each reactant will determine how much product is formed.. The . limiting reagent. is the reactant that is . used up first . in the reaction, thus determining when the reaction stops.. Stoichiometry. You should understand. Moles, mass, representative particles (atoms, molecules, formula . units), molar mass, and Avogadro’s number.. The percent composition of an element in a compound.. Balanced . chemical reaction equations. give the ideal stoichiometric relationship among reactants and products. . The reactants for a reaction in an experiment are not necessarily a . stoichiometric. Adjusting To Reality. This . is not the . entire. . story. In reality, you . never. . have the . exact. . amounts of . both. reactants you need. At the . end. . of the reaction, one reactant has been . III.. . Limiting Reactants. . A. Why do reactions stop? Are all reactions 100% efficient?. Reactions might . stop. for a number of reasons including: . consumption. of one or multiple reactants; occurrence of side reactions; .