The data sheet is worth 30 pts. This reactant is known as the . Then we had to answer several questions about the relation of the mass of the S'more and the mass of the ingredients. (4) Graham cracker halves 4. This reactant therefore limits the amount of product in the reaction. This lab involved using chocolate to learn about reactants and limiting and excess reactants. Clean up your station and answer the questions. (Shah, 2007) (Buthelezi, Dingrando, Hainen, Winstrom, & Zike, 2013). To determine the limiting reactant in the synthesis of S’mores To determine the amount of excess reactant in the synthesis of S’mores Materials: Per Group: 1. The reactant that is left over after the reaction is complete is called the excess reactant. I pass out the S'more Stoichiometry Lab Paper; I explain to students that they will be doing a fun lab but will be also reviewing for their Unit 5 exam. If I started with 454 g of marshmallows (which is the weight of 1 bag of marshmallows), how many complete S’mores could I make? W i g hly polar ledusis edily dissolve compounds that are also all The solubility of a compounds is dependent on 14 of lone selity uve been created to present the relative solubility of a compounds ntion You have probably heard the stage thailand we dont mix, which is an ac t of the soulity of a polar hydrocarbon fil) … 3. A reactant in a chemical reaction that determines the amount of product that is produced is the limiting reactant or limiting reagent. (6) Marshmallows 3. ... After making the S'more we had to weigh the S'more. Example 1 4. The following is a grading rubric for the abstract. The limiting reactant also determines the amount of product you can make (the theoretical yield). Determining the Limiting Reactant. Then answer the question specific to each problem. Limiting Reagent Lab with S’mores Introduction A delicious treat known as a S’more is constructed from the following ingredients: 2 Half Graham Crackers 3 Chocolate Bars 1 Large Marshmallow Suppose we find that these ingredients are available only in … I go over the Problem part of the lab with students and review the table at the top of the lab which gives the symbol for each reactant and the product S'mores. Limiting reactant is the reactant that is completely used until there isn’t any more of it and then the reactant will stop. 1. 4. Hypothesis is proposed that if there is a sufficient amount of … Limiting Reactant Problems Write and balance each equation. In a chemical reaction, one reactant is generally used up fully. A reactant that is left over is said to be in excess and those that are used up and limit the amount of product that can be made are called limiting reactants. Hint: use the atomic mass from the table in the pre-lab. (1) Chocolate bar 2. The limiting reactant will be completely consumed in the reaction and limits the amount of product you can make. Paper towels and wooden splint 6. limiting reactant: chocolate bar 2. The abstract is worth 20 points. An Introduction to Stoichiometry Lab—S’more Chemistry ... amount of product that can be made and are thus called limiting reactants. ... Graham Crackers would be our limiting reactant. Virtual Lab. When working with this Lab Report file, remember to save often. Ingredients # of s’mores you can make Limiting reagent 4 Gc + 2M + 5 Cp ... 6. The maximum number of s’mores you could make is called the theoretical yield. Each question is worth 5 points. Based on your answer to #2 above, how many graham crackers would I need to make that many S’mores? PROBLEM . Determine which reactant is the limiting reactant. Solve the rest of the problem, and answer the question that is posed. The reason for a limiting reactant is that elements and compounds react in a balanced chemical equation according to the mole ratio between them. The limiting reactant is the reactant that produces the smallest the quantity of product. LAB ACTIVITY A Limiting Reactants 3.2 Objectives Solubility factors. THE LAB REPORT Your lab report will consist of your data sheet (pg 4), a written abstract and answers the two questions that follow. limiting reactant.