Cobalt chloride paper scissors 250 mL Erlenmeyer flask Aluminum Paper 10 mL graduate 2 glass squares safety goggles test tube tongs toothpick beaker tongs string Method The lab performance overall was good. Performing many experiments, with my lab partners, to observe and interpret the burning candle. Ms.Lindsey, the teacher, gave equipment
Purpose The purpose of this lab is to attempt to verify two of the three important chemical laws, The law of conservation of mass, The law of definite proportions, and the law of multiple proportions. The laws are verified through observation of the reaction between iodine and zinc. This lab also helps to hone laboratory and massing skills. this lab includes both qualitative observation and quantitative gravimetric data. Background Questions 1. For each of the three important chemical laws
different reactants: • Aluminum chloride hexahydrate (AlCl3* 6H2O) • Cobalt (II) chloride hexahydrate (CoCl2* 6H2O) Chemicals needed to synthesize the pigment: • 583 mg Aluminum chloride hexahydrate (AlCl3* 6H2O) • 117 mg Cobalt (II) chloride hexahydrate (CoCl2* 6H2O) Equipment needed to prepare the pigment: • Hot plate • Electronic scale • Pestle • Vacuum hose • Funnel • Stopwatch • Tongs • Small Beakers • Stirring rods Procedure for synthesis: • Grind together 583 mg of Aluminum chloride hexahydrate
Kelley Small Maddie, Gillian, Ally 21 October 2015 Period 5 Photosynthesis and Cellular Respiration Abstract: In this lab, we tested the rate of production and consumption of Carbon Dioxide and Oxygen from spinach leaves in different amounts of light. We tested it one time using a completely dark space and one time using a space with lots of light. In order to calculate the data, we used LoggerPro and BioChambers to measure the gases in fifteen minute intervals. There are four bar graphs, measuring
Leticia Glass Introduction to Chemistry Lab 5 Pre-lab Questions 1. In terms of food, what is a calorie? In terms of food, calories are the measurements of how much energy that particular food contains. 2. A piece of chocolate chunk cookie was tested the same way as is used in this procedure. The cookie sample had a mass of 0.851 g and the temperature of a 100.0 mL of water increased by 7.87 ⁰C. How many Calories per gram did the cookie contain? Show all calculations. First of all, the mass
The Effects of Light on the Rate of Photosynthesis Tong Wu October 10, 2014 Lab section 82036: Mondays at 12:00 PM - 2:45 PM Performed and written by: Nayobe Bivins Stephanie Wigmore Abstract The objective of this experiment was to determine the relationship between light and the rate of the photosynthesis of the Elodea plant; that is, to describe the effects of a light source on photosynthesis. To test the effects of light on photosynthesis in this experiment, the Elodea plant was placed under
Photosynthesis Lab Report Abstract- The main purpose and objective of this lab is to determine if the consumption of carbon dioxide requires light or not during the process of photosynthesis. To complete this experiment the negative control is put under two different tests. Placing one test tube with no plant and exposed to light and the other test tube with the plant and no light exposure. Even though light is not required for the consumption of carbon dioxide, the hypothesis was not supported by
Objective: This lab was done to help understand restriction enzymes and how they work. As well as comprehend the correlation between these enzymes and DNA Fragments. This lab was conducted to estimate the size of unknown DNA fragment thru agarose gel and electrophoresis. Background: A restriction enzyme is a protein that recognizes a specific, short nucleotide sequence and cuts the DNA only at that specific site, which is known as restriction site or target sequence. Restriction enzymes
graduated cylinder was disposed of in the non-halogenated container, and the remaining mixture in the flask was disposed of in the aqueous waste container. All pieces were allowed to cool and then cleaned in order to prepare for the next part of the lab. Finally, a graph was constructed in order to show the relationship between the temperature and the amount of distillate collected (Graph 1.A). Notes: The junctions of all glassware were applied grease in order to create a proper seal in order to not
concentration of solar radiation produces very high temperatures. Although the CPV cells energy production is not affected by high temperatures any more than conventional silicon PV, the excess heat is to be evacuated. The PV cell is coupled to copper and aluminum foils for the heat dissipation. 4) Solar tracking system: The module should be perpendicular to the sun, Therefore, the panels require solar tracking systems that follow the sun’s path. The systems typically used have two axes of movement, one to follow