Chemistry 111 – Lab #2 Formula and Composition of a hydrate Purpose of the Experiment: The purpose of this experiment is to provide an opportunity to practice proper heating and cooling techniques and to calculate the formula of a known anhydrous compound and to calculate the percent of water in an unknown hydrate from results. Materials and Methods: Materials used for this experiment included 3 crucibles (with lids)‚ clay triangle‚ ring‚ burner‚ CaSO4.2H2O and one unknown hydrate
Premium Mass Heat The Crucible
tissues ; Pipets‚ serological‚ 10-mL ; Sample of consumer sports drink‚ 10-mL ; Spectrophotometer ; Test tube rack Procedure: 1) Preeminently‚ follow all laboratory safety guidelines ensuring that you have safety goggles on at all times throughout the lab. 2) Fill the cuvette 2/3 of the way with water. 3) Select the appropriate wavelength on the spectrophotometer. 4) Place the cuvette in the spectrophotometer and click the calibrate button. 5) Put 5mL of stock solution into test tube. 6) Fill
Premium Absorbance Laboratory glassware Coffee
Experiment no. 2 Classification of Matter Morillo‚ Mary Jane J. Nidua‚ Maria Angelene Group no. 2/Chemistry Lab./Engr. Ma. Jeanette U. Obias Abstract The classification of matter was demonstrated through simple activities of mixture‚ heating and magnetic attraction describing its physical state ‚ its chemical reactions and its separation to other substances. Simple reagents such as Iron filings and Sulfur powder in our experiment were considered as elements‚ while solid mixtures such
Free Chemical substance Mixture Chemistry
Name: Lab Partners: Experiment Date: 02/09/2013 Due Date: 02/23/2013 Lab Exercise No. 2 Determination of Kc Values Using UV Absorption Objectives * To determine the equilibrium constant for a given reaction * To understand the concept of Le Chatelier’s Principle * To gain experience in the use of a UV Spectrophotometer Background/Concepts * A chemical equilibrium is the state reached by a reaction mixture when the forward reaction and the reverse reaction
Free Chemical equilibrium Chemical reaction Concentration
Objectives: 1. To identify the relative densities of some common liquids and solids. 2. To determine the densities of water‚ an unknown liquid‚ a rubber stopper‚ and an unknown rectangular solid. 3. To determine the thickness of a piece of aluminum foil using the density concept. 4. To practice proficiency in performing the following experimental procedures: pippeting a liquid‚ weighing by difference‚ and determining a volume by displacement. Apparatus: Tall glass cylinder‚ glass marble‚ rubber
Premium Density Volume
Proportions. In our final lab‚ we took a sample of potassium chlorate and heated it in a crucible to drive off the oxygen. We did this to measure and find the amount of oxygen that was in it. This was to verify the Law of Definite Composition. Aspect 2: In our investigation of the Atomic laws we had some major results in all 3 experiments. In the Conservation of Mass Lab‚ we found that the total combined mass was equal to the original individual masses of the substances. In the Oreo Lab‚ our ratio result
Premium Chemistry
FAQ QUESTIONS PAGE 1. Before starting your business 2. Checklists and guides for starting a business 3. Business planning 4. Financing your new business 1. BEFORE STARTING YOUR BUSINESS You want to launch your own business‚ but have you done your homework? Get ready by doing the research and planning that will help you get started. Return to Top ▲ 2. CHECKLISTS AND GUIDES FOR STARTING A BUSINESS Access guides and checklists for starting different types of businesses. Return to Top▲ 3
Premium Management Plan
Emission Spectroscopy Lab Introduction: According to the Bohr atomic model‚ electrons orbit the nucleus in fixed paths with specific energies. Each path is therefore often referred to as an “energy level”. Electrons possessing the lowest energy are found in the levels closest to the nucleus. Electrons of higher energy are located in progressively more distant energy levels. If an electron absorbs sufficient energy to bridge the “gap” between energy levels‚ the electron may jump to a higher
Premium Photon Electromagnetic radiation Quantum mechanics
Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium
Free Oxide Oxygen Chemistry
References: "Historical and International Aspects of the SI." Historical and International Aspects of the SI. Web. 05 June 2012. . Lab Paq Manual. Questions
Premium Length Units of measurement Density