3. Upon adding 20 drops of NaOH, a white precipitate was formed signifying acidic impurity. In the second NaOH mixture, about 20 drops were administered and no precipitate formed indicating that the ample is more pure than before. Data: Weight of flask = 75.10 grams Weight of the flask with solids =
Pat McGurrin October 24, 2015 Period #1 Honors Biology Mr. Dinunzio Murder and Meal Lab Analysis Procedure: 1.) Gather all materials: Safety goggles, 250ml beaker, water, hot-plate, test-tubes, paper bag tear, stomach contents, pipette, Biruet solution, Benedict’s solution, and Iodine solution. 2.) Put on safety glasses.
Your dentist has been telling you all your life that brushing and flossing are essential for maintaining healthy teeth and gums. An ongoing question in the preventative dentistry world, many wonder if using a waterpik is a substitute to flossing. Below, the friendly dental staff at the Implant Center of Maui explain why flossing is better for you than using a waterpik in terms of preventative dentistry. Flossing vs. Waterpiks How are the Two Different?
Utilizing the method that the experimenters have come up with, the procedure isolates the variable being tested, which is the paper towel brand. By not changing other aspects of the procedure, other factors have a lower chance of affecting the accurate results of the answer to the main question. Additionally, the method is a quick and simple experiment, causing no use of excessive time than the provided duration. Within the first minutes of the experiment, the experimenters and the advisor realized that the method did not really provide accurate results due to merely estimating the numbers without the use of a graduated cylinder. Changing that aspect of the procedure by using a graduated cylinder to measure the amounts of water instead helped
We were asked to correctly communicate these findings as we tested each of the substances she had encountered with both water and hexane. In experiment number three, The Relationship Between the Volume of a Gas and the Temperature, we where given a list of materials and asked to come up with our own procedure, which we did using zip lock bags filled with air, and submerged fully in a measured amount of water in order to find the volume, and then the change in volume when the temperature of the water was increased. In the fourth experiment we were asked to find the temperature of heated water, based on the cold and warm water. The experiment also required that each section be preformed several times in order to ensure accuracy, and also asked that the experimental responsibilities be split up between lab partners, each doing a section of the testing. This gave us an opportunity to work together with our fellow lab partners, with no one person doing the bulk of the work.
Also, he talks about what the rind of the small flower can do for you. He says, “For this, being smelt, with that part cheers each part; being tasted, stays all senses with the heart. Two such opposed kings encamp them still…” This means that when the poison is smelt, you feel good inside but when tasted, you die. There are two opposite elements in everything in nature.
1. 150 ml of boiled water was poured into each of the three beakers labeled A, B, C. 2. Five tea bags were soaked for the time given by the manufacturer (two minutes) , in beaker A (Control). The teabags were immediately removed after the time elapsed. 3.
He points out results about his experiment and the distribution of the chemicals within:...... (((“My husband and I both work. We split midnight baby feedings ... but ... he will admit that he’s never cleaned the bathroom, that I do the dishes nine times out of ten, and that he barely knows how the washer and dryer work in the apartment we’ve lived in for over eight months.”))) …...
This specific statement represents the Roseman’s and Cacciamani’s intense rivalry in the form of symbolism. Every moment that Julie’s father spits, it releases the detestation he has for the Cacciamani family. The spit would represent one of the many ambitions for them: the Cacciamani’s absence. Therefore, the Roseman family simply desire indifferent, discrete complications. They would strive to completely disregard that family whether by arriving close in contact or simply referring to them.
Rachel Mathews E 260 March 13, 2018 Dr. Shaun Morgan Paper #1 “Bitter in the Mouth” by Monique Truong explores race, gender and sexuality, and never had a definite theme. It starts off with a young, seven-year-old North Carolina girl, with many layered secrets, who name was Linda Hammerick. She stated that she “fell in love with” (1) her great-uncle Baby Harper. She also talks about her parents, DeAnne and Thomas, and her best friend, Kelly. She states that she was her father’s tomboy and her mother’s baton twirler and that she went far away for college and law school, now living in New York.
In this lab, human error could have possibly been that the salt wasn’t fully dissolved or even the Kool-Aid wasn’t fully dissolved. To fix this next time, both mixtures can be stirred a little longer. A third human error could have been when putting 20 drops into the test tubes, some drops were bigger than others causing there to be more than mL of mixture in the test tube. At the end of the lab, a red and yellow M&M were used to do a home material test. I dissolved the color off the shell with warm water and placed a dot of each color onto a strip of chromatograph and placed them in two individual
Drugs do not define an individual, they only limit one’s potential. Unlike any other work, “Water by the Spoonful” uses the online world to establish the central theme of redemption. The online chatroom for addicts and substance abusers, such as Odessa and Fountainhead, is a strategy placed within the play
In the round-bottom flask (100 mL), we placed p-aminobenzoic acid (1.2 g) and ethanol (12 mL). We swirled the mixture until the solid dissolved completely. We used Pasteur pipet to add concentrated sulfuric acid (1.0 mL) to the flask. We added boiling stone and assembled the reflux. Then, we did reflux for 75 minutes.
Introduction The goal of the experiment is to examine how the rate of reaction between Hydrochloric acid and Sodium thiosulphate is affected by altering the concentrations. The concentration of Sodium thiosulfate will be altered by adding deionised water and decreasing the amount of Sodium thiosulphate. Once the Sodium thiosulphate has been tested several times. The effect of concentration on the rate of reaction can be examined in this experiment.
I kept the process into three simple steps, gathering supplies, mixing liquids, and adding the activator. Despite the ease of the project, I also went into detail. I made sure to teach them every tip I knew, like not using a full tablet and using dark food coloring. To help keep the process streamlined I was able to use my visual aid to help. I used my visual aid to show the class what the bottle should look like each step of the way.
