Acquire 40mL of the standard tartrazine solution in a 100mL beaker. Make sure the beaker is clean and dry.…
Experiment 1: Bromination of Acetanilide1 Precautions: Ethanol is flammable Sodium hypochlorite is an oxidizing agent and releases toxic fumes (handle in fume hood) Acetic acid is corrosive, harmful if inhaled, flammable and can cause burns (handle in fume hood) Gloves are recommended to avoid chemical contact with skin Reaction Scheme: Conversion of acetanilide to p-bromoacetanilide…
Pyridinium tribromide is considered greener because it has a higher atom economy which means it is closer to an ideal chemical reaction.…
Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.…
MATERIALS AND METHODS This experiment contained two parts, a “PART A” consisting of blood pressure measurements, and a “PART B” consisting of linear displacement measurements. The equipment used in “PART A” consisted of an OMRON manual sphygmomanometer with a stethoscope attachment as the manual blood pressure meter, and a ReliOn Manual Inflation Blood Pressure Monitor model HEM-412CREL as the automated blood pressure meter.…
We placed the zinc inside the beaker and slowly poured the hydrochloric acid into the beaker. As soon as the acid entered the beaker, there was a sizzling sound and bubbles started to form as we add more of the substance in. When the bubbles were forming, we could see a steam of gas coming out of the beaker. After 10 minutes, we noticed bits of zinc were floating on top of the hydrochloric acid and lining the beaker. I lifted the beaker and felt the bottom and it felt warm, which meant the reaction was still happening. After 20 minutes, we added water into the zinc and hydrochloric acid to stop the reaction and we observed a slight cloudy colour (still clear) forming as we slowly pour the water in the beaker.…
Remained clear, very bubbly, almost as if forming a gas, which it was. Carbon Dioxide.…
Use this document to help you design your experiment about one of the scenarios from the activity. Copy and paste the template then insert your information for each of the steps of the scientific method.…
* You need to plot a calibration curve and write an appropriated caption, The sample Figure (Figure 1) and its caption give you idea what you need to write for the calibration curve.…
After the all the equipment is bought, the first step to replicate this experiment is to place the three plant group in each of the containers, filling the container to around three quarters of the way up, not covering the plant. In my case the plants I used were spinach sprouts, with two sprouts in each ice-cream container. A good idea I wasn’t aware of during my experiment is to poke holes in the bottom of the container and put them in larger containers to catch any excess water.…
Use this document to help you design your experiment about one of the scenarios from the activity.…
The purpose of this lab was to determine if a there is a change in mass when a gas is produced and determine if gas has mass. To conduct this experiment, the group must be careful not to let the Alka-Seltzer tablet get wet before the bottle is closed by wiping the lip of the bottle and the cap so it remains dry, or risk gas escaping into the air and not being captured by the bottle. Also, the group must be sure to close the bottle tightly with the cap, because gas may escape this way as well. During this investigation, it was determined that there is 0 change in mass when a gas is produced, because the mass of the bottle, water, Alka-Seltzer tablet, and cap remained the same even after the Alka-Seltzer had a chemical reaction with the water and…
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. This movie illustrated the cognitive dissonance theory and the power of authority.…
The effects of an antidepressant medication on reducing symptoms of Major Depressive Disorders in males and females, ages 18 – 25, who have been diagnosed with Major Depressive Disorders and live in Pinellas County, Florida.…
All sociological researchers make use of the data collected to test their hypotheses, but the way and methods used differ from one sociological study to another. There are four general techniques, the case study, the experiment, the observational study and the survey. An experiment is a scientific method in which data are collected to be tested to prove a hypothesis using either independent variables in a closed environment or dependent variables in an opened environment.…