Lab 3 : Le Chatelier's Experiment

1. The first experiment is Preparation of a Cobalt Amine Bromide Product ; Synthesis #3 was used to create the compound. Added 5 grams of cobalt carbonate to 20 mL of hrdrobromic acid in a beaker. Noticied a slight color change to dark purple. Solution frothed after it settled I mixed in 15mL water and

Procedure: In this experiment, various chemicals were mixed together, to determine a reaction. Using two drops from chemical 1 and two drops of chemical two, unless otherwise stated, then recording the type of physical reaction or color changes that occurred.

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.

Purpose: The purpose of this experiment is to observe a variety of chemical reactions and to identify patterns in the conversion of reactants into products.

The experiment is to observe a variety of chemical reactions and to identify patterns in

C. An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide.

Students will carefully observe acts of aggression and prosocial behavior on television, report their observations, and analyze their data to draw conclusions.

The Vitamin C turned to a red/orange color with no physical/chemical reaction. For the salt the solution turned to an orange color with no physical/chemical reaction. With the Alka-Seltzer, the solution turned to a brown color with no reaction as well. Last but not least, the Baking soda turned to an orange/brown color with no reaction.

The main objective of this experiment is to differentiate between a physical change and a chemical change.

Fizzy and Bubbly motions started to appear after 5 seconds of combining chemicals. Formed gas. After about 5 minutes the chemical solution was still clear and there was no change that appeared after that. The reaction between Potassium iodide and Silver Nitrate (Kl + AgNO3) There were 15 drops added of each chemical. The mixture started to turn a misty yellow colour after 5 seconds of combining.

When analyzing the IR spectrum of Ruthenium complex with DMSO, the prominent peak is presented at 1105.54 cm−1. This peak indicates that S=O bonded in DMSO. For DMSO, the frequency is around 1050 cm−1. From our spectra obtained for DMSO where the S=O peak is at 1017.65 cm−1. Since the bond appears at a higher frequency, this shows that the bond is strengthened by the reaction. This indicates that when the copper metal was combined with DMSO, it bonded with the Sulfur atom. Combining ruthenium with sulfur atom caused it to donate a pi electron as a back donation.

Aim: The aim of the lab “Chemical Equilibrium” is to observe the effects of changes in concentrations of products and reactants on the position of the equilibrium of given chemical reactions.

The objective of this experiment will be to combine various substances, liquids and metals, and to observe their behavior when they are combined. The types of reactions observed shall determine the nature of these reactions: physical or chemical.

Sidney Farber then heard about an experiment Paul Ehrlich was researching about. He did an experiment with cloth dyes. He noticed that the dyes stained only some parts of the cell. He thought that there must be some chemical poisons that can be directed for certain diseased cells. He also notices that some chemicals killed specific organisms. Enrich called each of these drugs “Magic Bullets.” He believed that every cancer has a “magic bullet” that would kill the disease without killing any healthy cells. To test his theory, he tested nitrogen mustard on a man with Lymphoma. When he finished the test, the nitrogen mustard killed the man’s cancerous cells. When people heard of his experiment, they immediately thought that Ehrlich hypothesis was

Klausner is a young scientist who is experimenting with the wonders of sounds that are not audible to the human ear. In his shed, Klausner created a machine in which he can hear the sounds not audible to the human ear. One day, Dr. Scott comes to his house, and when he sees the machine he is intrigued. Eventually, he explains the machine to the Doctor. After Dr. Scott leaves, Klausner starts experimenting with the machine, at first he hears nothing, and then all of a sudden he hears a shriek. Yet, no one is in sight except for Mrs. Sanders who his cutting her roses, and he hypothesizes that the sound is from her roses. Then, Klausner tests his theory and tries to tell Mrs. Sanders, but she doesn't believe him. He starts experimenting with a