Abstract: The chemical and physical conditions used in the preparation of activated carbon‚ an adsorbent used in water filtration influence the specific surface area and the porosity. In this study‚ coconut shell was used as the raw material and activation reagents such as Hydrochloric acid‚ Zinc Chloride and Phosphoric Acid were used. A single burn and double burn process was carried out for each method. The activated carbon obtained was compared in terms of absorption capacity‚ bulk density‚ BET
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***ANSWERS*** CP Chemistry Mole Review Practice Problems Find the mass of 0.89 mol of calcium chloride. 0.89mol x 111 g / 1 mol = 98.8 g Determine the number of moles of C5H12 that are in 362.8g of the compound. 362.8g x 1 mol / 72 g = 5.04 mol Find the mass of 0.159 mol of silicon dioxide. 0.159 mol x 60 g / 1 mol = 9.54 g You are given 12.35 g of C4H8O2. How many moles of the compound do you have? 12.35 g x 1 mol / 88 g = 0.140
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Farrukh Aliyev English 08 The Differences between Swimming in a Pool and Swimming at the Beach During the hot days in summer‚ there is nothing better than a refreshing swim. But it is crucial to decide where people want to swim. Some people prefer swimming in a pool however‚ others want to swim at the beach. Anyway‚ swimming in a pool and at the beach has many differences. For instance‚ the environment is different. Of course‚ a swimming pool is smaller than any sea. But when feel yourself
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By: Nicholas Lucas Chemiluminescence Group members: Nicholas Lucas Meagan Williams Kelli Smith TJ Jones Chemistry Lab 151-003 Professor Stewart 19 March 2013 Introduction: The objective of this experiment is to carry out a systematic series of experiments in order to determine which chemicals and what ratio of the chemicals produce the brightest light and which produce the longest lasting light through the process of chemiluminescence. Chemiluminescence is the production
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EXPERIMENT 7: PERCENTAGE OF OXYGEN IN KClO3 Introduction: In this experiment you will determine the percentage of oxygen in potassium chlorate. You will calculate the theoretical value from the chemical formula and compare your experimental value to the theoretical value. Background: When potassium chlorate (KClO3) is heated‚ it undergoes chemical decomposition. Oxygen gas (O2) is given off and potassium chloride (KCl) remains as the residue. The equation for the decomposition of potassium
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Physical and Chemical Change Objective: Recognize and distinguish between chemical and physical changes. Materials: - lab balance - microspatula - lab burner - dropper pipet - 5 test tubes - mortar and pestle - test tube rack - magnet - test tube holder - insulating pad - watch glass - safety goggles - glass square - lab apron or coat - copper sulfate pentahydrate - iron fillings - sodium chloride - magnesium ribbon - hydrochloric acid - paper
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Purpose: The purpose of this lab was to test how objects slightly acidic or slightly basic will affect the way catalase‚ the enzyme tested‚ denatures‚ or breaks down. Hypothesis: If the potato is acidic‚ it will react with the H2O2 more than it will with the raw‚ plain potato because the acid will denature the enzyme faster. The manipulated/independent variable is the raw‚ plain potato while the responding/dependent variable is the other types of potatoes used in the experiment. Materials:
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I. INTRODUCTION: In the analysis of inorganic substances‚ this branch involves the analysis of both metallic constituents as cations and non-metallic constituents as anions. In this experiment‚ you will analyze a known solution that contains the entire Group I cations—silver‚ lead‚ and mercury (I)—and an unknown solution to determine which ions are present and which are absent. II. DISCUSSION: The chlorides of Pb2+‚ Hg22+ and Ag+ are all insoluble in cold water. They can be removed as
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Recovery of Elemental Copper from Copper (II) Nitrate Objectives: Students should be able to… recognize evidence(s) of a chemical change convert word equations into formula equations perform a series of chemical reactions in order to recycle the element copper determine the percent recovery of elemental copper Challenge: How good and accurate a chemist are you? Given a solution of Cu(NO3)2‚ what percentage of elemental copper can you recover from the original solution? Materials:
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Mahlaqua Imran Chemical and Physical Changes Lab 09/09/13 I. Purpose: Identify the different changes as a physical change or a chemical change. II. Safety: You may need safety goggles and gloves. III. Pre-lab questions: 1. Identify the following as either chemical or physical changes: a. Striking a match Chemical b. Food spoiling Chemical c. Breaking a glass Physical d. Mowing the grass Physical
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