Chemical reactions

In this lab procedure, lab groups were split by the type of lab procedure they would perform. Half the lab groups were tasked to perform simple distillation while the other half performed a fractional distillation. Before beginning the procedure for the fractional procedure, materials were gathered. The lab procedure with the lab manual called for a short neck round bottom flask; however, this was not followed during the actual lab. Instead, the long round bottom flask was used. In addition to…

Over the course of the roller coaster height lab My group and I had to answer the question “ does the height of the ramp affect the speed of the marble”. We answered that yes the height of the ramp will make the speed of the marble increase. Our hypothesis was wrong, but, My group and I have discovered that the height of the ramp will not affect the speed of the marble. We also Discovered something new which was that the speed increased and decreased abnormally as we went along in the lab. Over…

~~~Science Project~~~ Experiment 1: Materials~ 2 eggs Needle Scale Bowl Marker Question? What is the difference between weight and mass, and can two objects that have the same mass be different weights? Hypothesis The difference between weight and mass is that mass is the measurement of how much matter is in an object and it will remain constant regardless of gravity. Weight is how heavy an object is depending on the gravitational pull on the object. Step 1: Zero out the scale. Step 2:…

Experimental Section - Chemicals Pyrrole, substituted benzaldehydes (p-anisaldehyde, p-nitrobenzaldehyde, 2,6-dichlorobenzaldehyde and benzaldehyde), triethylamine (TEA), p-terphenyl (TP) and ferrocene (Fc) were purchased from Sigma-Aldrich. Tetraphenylporphyrin (TPP) was purchased from Frontier Scientific. Acetonitrile (MeCN), dichloromethane (DCM), 1,4-dioxane, and other organic solvents used were spectroscopic grade. These solvents were distilled from appropriate drying agents under argon…

In this week problem, the students are presented with a table with data on altitude and temperature gathered by a weather balloon. The data is in the first column shows the data of the altitude in feet, and the second data shows the air temperature in degrees Fahrenheit. Part A asked the students to pretend that they are making a comparable metric table of the data with the same variables. The altitude need to be change into kilometer and the temperature is measured in degree Celsius, what is…

and 9-fulorenone are isolated from a three-component mixture by using the acid-base extraction and other following types of various extraction techniques. An acid-base reaction is utilized in order to isolate the individual species from the mixture. First, in isolating the base benzocaine, proton transfers occurred via reaction with hydrochloric acid, which led to a significant shift in the polarity of the said compound, although the conjugate acid of benzocaine formed as a result. Due to the…

1)Hands were washed thoroughly with soap and water to ensure that no contamination on the coli-MUG tubes. The sealed plastic package was opened and coli-MUG tubes were removed. 2)Usually, inner fermentation vials contain only air. The assemblies was inverted and inner vials were allowed to fill with air, only if these inner vials contain any liquid. 3)Cap was removed and it was ensured that open end of the tube or the inside of the cap did not open. 4)Each of the given tubes were dispensed with…

DISCUSSION It is clear from the very low fraction of “head-to-head” linkages that this reaction is far less energetically favorable than the “head-to-tail” reaction, which occurs normally. The head-to-tail arrangement is preferred energetically due to steric and resonance effects. When the radical attacks the fourth (double-bonded) carbon, the new radical that is produced is more stable, as it may participate in resonance with the neighboring oxygen. Conversely, when the radical attacks the…

Defining the Problem/Question Task 3 was to design and test a series of superabsorbent pillows to identify a quantitative trend that can efficiently clean-up spills of heavy metal ion solutions. This investigation has value to companies or people they want to find a way to efficiently clean-up spills of toxic metals in bodies of waters that could damage species in and around these waters. Experimental Design and Procedure In order to efficiently clean-up spills of heavy metal ion solutions…

when a solution is tested, make sure you observe everything and note everything. This is lab, we will test some positive ion and determines if it’s an anion or a cation. To go with that, we will check its properties size, shape, charge, color, and chemical behaviors. During the experiment, correct terminology must be used in the recording of observations because we will be testing unknown solutions containing ion. Unknown…