Mofu Lin Ms. Conte 15/3/12 IB Chemistry Soda can calorimeter(Energy content of food) Lab report Introduction We‚ human needs energy to live and for movements. Thus‚ we eat and combust food to release its heat energy in our bodies. In this experiment‚ we will determine how much heat energy released when we eat snack foods such as popcorn or potato chips. This lab includes three burning tests of different foods with different energy contents. Calorimetry is the science associated with determining the
Premium Energy Thermodynamics Heat
Soda bottle rocket Purpose The students will investigate the effect of the rocket length upon the distance of flight. The students will also investigate the mass upon the distance flight. Background The students will proof Newton’s third law of motion states that for every action there is an equal and opposite reaction. Newton’s third law also applies to rockets. A rocket gets its lift from the gases pushing out of its tail. The force of the rocket pushing on these gases is the action force
Premium Classical mechanics Force Newton's laws of motion
Conservation of Mass 9/27/10 Block A5 Materials * Baking Soda (NaHCO3) * Vinegar (acetic acid‚ CH3COOH‚ solution) * Ziploc bags * Weight boats * 100mL graduated cylinder * 150mL beaker * 400mL beaker * Balance The purpose of this lab was to find the mass of the products and reactants and to show a chemical reaction between them. I will use our results to apply what we’re learning in class which consists of: intensive and extensive properties‚ physical and
Premium Chemistry Hydrogen Water
The Experiment Gloria Isham Central Texas College Twenty- six men are chosen to participate in the roles of guards and prisoners in a psychological study led by a Doctor Archaleta for which each participant is to receive $14‚000 after two weeks. Travis has just lost his part time job and is a peace protester who wants to travel to India with his girlfriend. Barris is a 42-year-old who lives alone with a domineering mother‚ who has made him join the experiment to raise money for her hip operation
Premium Social psychology Cognitive dissonance Cognition
Gina R. Walker Professor Guirguis ENC 1102-42668 19 March 2013 Let Them Drink Soda The controversial topic of imposing a “soda tax”‚ or surcharge to sweetened beverages‚ in the US‚ is one that has been debated for many years. The purpose of the tax is to discourage people from purchasing sugary drinks in hopes that healthier alternatives would be purchased more often and therefore having a positive effect on the obesity epidemic in America and the rising healthcare costs as a
Free Obesity Nutrition
of Soda Ash and Volumetric Analysis of a Carbonate-Bicarbonate Mixture Belardo‚ Pia Jobelle J. Department of Chemical Engineering‚ Faculty of Engineering University of Santo Tomas España‚ Manila February 27‚ 2013 Abstract The analyte used is the soda ash which is titrated with an HCl titrant‚ standardized by Na2CO3. The indicators used are phenolphthalein for basicity and methyl orange for acidity. The two volumes of the titrant are then used to calculate percent composition of soda ash
Premium Titration Sodium hydroxide Hydrochloric acid
Experiment 2: IDENTIFICATION OF UNKNOWNS BY TLC AND MP IN COMBINATION Introduction: Thin layer chromatography (TLC) is one of the most valuable techniques in organic chemistry. This is a best method of separating and identifying mixtures of two or more compounds. The separation is accomplished by the distribution of the mixture between two phases: one that is stationary and one that is moving or mobile. Chromatography works on the principle that different compounds will have different
Free Chromatography Thin layer chromatography
process of distillation. Distillation is the separation of volatile substances mixed with nonvolatile substances by boiling the mixture to alter the phase of the volatile substance. The researchers used the simple distillation set up to conduct the experiment. 25 ml of The Bar Vodka was used and 7 ml of distillate was collected before a temperature of 95 degrees Celsius was reached. Collected distillate was then subjected to a flammability test to confirm ethanol content. The percent ethanol was computed
Premium Distillation Boiling point Ethanol
Vanessa Navarro Rozar English 50 September 25‚ 2012 Essay 1: New York Soda Ban It is no secret that portion sizes and waistlines in America have increased over time. The author of “Prevalence of obesity and trends in body mass index among US children and adolescents” informs that “two out of three adults and one out of three children in the United States are overweight or obese‚ and the nation spends and estimated $190 billion a year treating obesity-related health conditions. These statistics
Free Nutrition Medicine Obesity
Baking Soda and Vinegar Lab Purpose: Determine if mass is conserved in a chemical reaction. Materials: baking soda vinegar 4 dry beakers (or simply rinse and dry the same beaker before using it again) 1 digital balance 1 rubber band plastic wrap plastic weight boat (lid) Procedure: 1. Measure the mass of a beaker‚ 10mL vinegar‚ and 10g baking soda. 2. Mix the compounds in the beaker and wait for the reaction to finish. 3. Record the mass of the beaker and its contents. 4. Determine the
Premium Chemical reaction Chemistry Chemical substance