Analytical chemistry

In this lab experiment, we will be using an unknown volatile liquid in order to understand the direct relationship between the molecular weight of a gas and its vapor density, which will help us determine the molecular weight of the unknown. The necessary tools that are essential in this experiment include: a balance, watch glass, two pieces of foil (2.5x2.5 inches & 3x3 inches), boiling chips, a ring stand, a thermometer, a bunsen burner, and an 800mL beaker. During this experiment, we have to…

First you need to collect all the things you need for the lava lamp. You’ll need something to do it in, such as: a clear vase, a water bottle, a large clear cup, a clear soda bottle, or something along those lines. You’ll also need water, vegetable oil, food coloring, and at least 2-3 alka-seltzers. For the best results with fake lava lamps use 4 parts vegetable oil and 1 part water. The container for the lava lamp should be mostly vegetable oil with some water. You can also add glitter for more…

In this experiment, the effect of environmental conditions on enzyme functions was tested. The materials needed for the experiment was an amylase enzyme to lower the activation energy of the reactions, starch solutions of pH 3,4,5,6,7,and 8, these provided different concentrations to project various environmental conditions. In addition, Iodine solution, and a spectrophotometer were needed. Each cuvette contained a specific pH concentration. Then the enzyme extract was added to each pH…

Purpose The purpose for performing part III of the lab was to investigate and compare the water potentials of different types of plants; namely, tubers (potatoes and yams) and non-tuber fruits (apples). To determine the water potentials, our focus during the lab was to collect data for osmosis rates in different sucrose concentrations. Background Information Now that we have discussed osmosis and free water, we can introduce the idea of water potential to mathematically represent concentration…

According to the average density and the boiling point of the experiment, the probable identify liquid of M4C is Propanol (Isopropyl alcohol), with the density value is (0.788 g/mL) and boiling point is (82.67 *C) compare with the literature value of density (0.785 g/mL) and the boiling point (82.4 *C), which Propanol (Isopropyl alcohol) should be the liquid of M4C. The Propanol (Isopropyl alcohol) has no color. The key of identify the unknown is the boiling point and the density, because if…

Low Water Pressure | Water Line Repair Sugar Land Unfortunately for some homeowners, low water pressure is due to the system of their water authority. If you are one of these unlucky homeowners, a Benjamin Franklin plumber can assist you. For all others who are experiencing unusually low water pressure, read on to learn the potential causes and solutions, including water line repair in Sugar Land. Blocked Water Pipes Low water pressure located in a single location is typically due to a blocked…

. The purpose of this experiment was to examine the role of attention in the performance of a new motor skill (cup stacking), to determine whether the level of attentional focus on the task impacted performance of the skill. The cup stacking experiment was performed under three different conditions; focused attention, response dual task, and cognitive dual task. Condition one was performed by solely focusing on completion of the task, while condition two, required the participant to respond to…

Back on the date of June 18, 1773 Joseph Priestley was in his science lab exploring and studying about the elements. Priestley had done a lot of experiments to find more about the element now known as oxygen. The first experiment dealt with using the previous methods Carl W. Scheele used. Carl W. Scheele was a chemist from sweden, but in his discovery of oxygen he had other people helping him throughout the process. Joseph had thought in his mind, “ If I can do this scientific inquiry on my own,…

The element Titanium is a very light metal and it’s in the periodic table group 4. This element is a transition metal and the symbol is Ti. The color of titanium is a silver grey and white color. The atomic mass is 47.867 and atomic number is 22. This element however is resistant to chlorine, and sea water. It has 22 electrons, 22 protons, and 26 neutrons. The density is 4.54 The discoverer who found titanium is William Gregor a Mineralogist. The year it was discovered was in 1791. Where it had…

Both IR and UV spectroscopy are methods of measuring the wavelengths absorbed by a tested material. IR spectroscopy measures the absorbance of the tested material in the infrared spectrum, the section of the electromagnetic spectrum with a lower frequency than that observed in the visible light spectrum. Conversely, UV spectroscopy measures the absorbance of the tested material in the ultraviolet spectrum, the section of the electromagnetic spectrum with a higher frequency than that observed in…