Labset Five Worksheet 1. List five environments where you are likely to find microbial growth: Lakes‚ soil‚ oceans‚ tundras‚ deserts 2. How do microbes contribute to soil fertility? The decomposition that microbes take part in help release mineral nutrients‚ such as potassium and nitrogen‚ from dead organic matter and allowing primary producers the nutritional access. They also produce CO2 and CH4 to release into the soil and atmosphere. 3. Describe the growth you observed in each of your
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Stoichiometry Section 11.1 What is stoichiometry? In your textbook‚ read about stoichiometry and the balanced equation. For each statement below‚ write true or false. _______true___________ 1. The study of the quantitative relationships between the amounts of reactants used and the amounts of products formed by a chemical reaction is called stoichiometry. ________true__________ 2. Stoichiometry is based on the law of conservation of mass. _________false_________ 3. In any chemical reaction‚ the
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Teresa Meng‚ Niharika Palakodety‚ Victoria Wang‚ and Grace Xiong Mrs. Rhonda Smith Honors Chemistry Period 4 13 May 2012 Redox Reactions Lab Report We wished to investigate the oxidation number of a metal that would form aqueous ions when reacted with an aqueous nitrate salt. For this purpose‚ we chose to investigate the reaction of solid copper metal‚ in the form of a wire‚ with aqueous silver nitrate. Before we began the lab‚ we hypothesized that when silver nitrate‚ AgNO3‚ reacts with
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Stoichiometry Practice Problems Be sure to balance all equations before you start calculating! Answer key is at the end. 1) Lithium hydroxide reacts with hydrobromic acid to produce lithium bromide and water. If you start with ten grams of lithium hydroxide‚ how many grams of lithium bromide will be produced? 2) Ethylene (C2H4 ) reacts with oxygen gas to produce carbon dioxide and water. If you start with 45 grams of ethylene‚ how many grams of carbon dioxide will be produced?
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Stoichiometry II- Synthesis of a Coordination Compound Report 〖CuSO〗_4 (s)→〖Cu〗^(2+) (aq)+ SO_4 (aq)^(2-) Cu^(2+) (aq)+ 4NH_3 (aq)→[Cu(NH_3 )_4 ]^(2+) [Cu(NH_3 )_4 ]^(2+)+ SO_4 (aq)^(2-)+H_2 O□(→┴(methanol solvent) ) [Cu(NH_3 )_4 ]SO_4*H_2 O 1.992 g 〖CuSO〗_4 (s) × (1 mol〖 CuSO〗_4 )/(159.6 g) = .0124 mol 〖CuSO〗_4 (s) .0124 mol 〖CuSO〗_4 (s)×(1 mol [Cu(NH_3 )_4 ]SO_4*H_2 O )/(1 mol〖 CuSO〗_4 )×(245.74 g [Cu(NH_3 )_4 ]SO_4*H_2 O )/(1 mol [Cu(NH_3 )_4 ]SO_4*H_2 O )=3.047 g [Cu(NH_3 )_4 ]SO_4*H_2
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Abstract. An innovative and novel technology method of processing called Turbo-Mixing Reactive Precipitation (TMRP) design proposed as an alternative to this current processing or conventional productions of finer precipitation calcium carbonate (nano-PCC) in turbo-mixing conditions. In this paper‚ the effect of the stirring rate onto morphology‚ particle sizes and reaction time of the precipitated CaCO3 particles was discussed. CaCO3 nano particles with an average particle size of approximately
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Stoichiometry and Limiting Reagents Theodore A. Bieniosek I. Purpose and Theory The purpose of the experiment is to study and apply the processes of stoichiometric calculation on a controlled chemical reaction. We will be adding variable amounts of reactants in a chemical reaction in order to demonstrate the effect of limiting reagents. Based on the volumes of the reactants‚ and their respective molarities‚ we can calculate the theoretical yield of the reaction and compare it to the
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Students’ Conceptual Understanding of Stoichiometry. Introduction Stoichiometry is one of the major concepts in chemistry. Conceptual understanding in stoichiometry is crucial for any student taking chemistry as a subject as many areas in chemistry are highly related to this conceptual understanding. Many previous researches found out that students poses a very low conceptual understanding and they also poses many alternative conception related to stoichiometry. Dahsah. C; Coll. R. K (2007)‚ found
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Copper-Iron Stoichiometry Lab Report 10/3/12 Abstract: The lab performed required the use of quantitative and analytical analysis along with limiting reagent analysis. The reaction of Copper (II) Sulfate‚ CuSO4‚ mass of 7.0015g with 2.0095g Fe or iron powder produced a solid precipitate of copper while the solution remained the blue color. Through this the appropriate reaction had to be determined out of the two possibilities. Through the use of a vacuum filtration system the mass of Cu was
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dioxide and water vapor. In the balanced equation for this reaction‚ what are the coefficients of butane‚ oxygen‚ carbon dioxide‚ and water‚ respectively? Question 1 options: 2‚ 13‚ 4‚ 10 1‚ 6‚ 4‚ 5 1‚ 6‚ 8‚ 10 1‚ 13‚ 4‚ 5 2‚ 13‚ 8‚ 10 Save Question 2 (2.7 points) When aluminum metal is dissolved in perchloric acid‚ aluminum(III) perchlorate and hydrogen gas are formed. In the balanced equation for this reaction‚ what is the coefficient of hydrogen gas? Question 2 options:
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