Undoped and Ce doped ZnO thin films were prepared by the sol-gel process. Zinc acetate dehydrate was dissolved in a mixture of absolute ethanol and monoethanolamine (MEA) yielding to a precursor concentration of 0.4 M .The MEA to zinc acetate molar ratio was set to 1. For doped films, cerium nitrate was added to the mixture with an atomic percentage fixed at 0.1, 0.3, 0.5, 0.7, and 0.9 at.% Ce, respectively.…
A 125 mL flask was obtained. The square of aluminum was fashioned over the flask by laying the foil over the mouth and folding the sides down. A pin was then obtained and was used to poke a tiny hole in the center of the aluminum cap.…
In this experiment, the percent composition and empirical formula of silver oxide will be determined.…
9) Put 4mL of stock solution and 1mL of water in a test tube to make the second solution.…
2. To determine the densities of water, an unknown liquid, a rubber stopper, and an unknown rectangular solid.…
When holding test tube inverted over heptane flame, condensation formed against top walls of the test tube. When the burning splint was added the walls of the test tube became less foggy from the condensation formed from the heptane flame.…
Purpose: In this experiment I will determine the mass, density, volume, lengths and temperatures of different objects and liquids to help me better understand the importance of Chemistry and how Chemistry plays a big role in our everyday lives.…
.2400 grams of the unknown compound. This is done in duplicate and purple-tinted precipitates are placed in Gooch crucibles. The precipitates are suction dried using ethyl alcohol then acetone to…
2. According to the law of conservation of mass, what is the mass of oxygen that reacts with the iron? 118.37g – 85.65g = 32.72 grams of Oxygen reacted with Iron…
My super hero’s name is Zinc Erator. The Zinc Erator can do all things. The Zinc Erator does everything like a human does. If you think the Zinc Erator cannot do it you are wrong but running.…
II. Measure 2mL of concentrated nitric acid, HNO3(aq), into a 100 ml beaker under a fume hood. Place penny into the beaker of nitric acid and observe the reaction. After 5 seconds remove penny with forceps and place into second beaker.…
Conclusion: In this experiment we had to find the heat capacity of the calorimeter cup using two trials of hot and cold water. When we obtained the data after 10 minutes of recording 30 second intervals of the calorimeter cup temperature, we created a…
1. Determine the mass of the samples to the nearest 0.01 gram. Record. 2. Fill a 100 ml graduated cylinder about three quarters full with water. Measure the volume, and record as “volume of water alone” in the data table. Tilt the cylinder and carefully slide one of the samples down the side. Make sure the sample is completely submerged in the water. Measure the volume and record as “volume of water + sample” in the data table.…
Zinc deficiency is the inadequate amount of zinc in the body to meet its demands. Zinc is vital to the body functions such as, a healthy immune system and wrongdiagnosis.com states is best known for minimizing the effects of the common cold or upper respiratory infections. It can enhance the functions of the liver, muscles and bones. Other functions of zinc in the body are to wound heals; aid enzyme activity; DNA production and cell division. When there is an insufficient amount of zinc available for metabolic needs the condition is called hypozincemia. Inadequate quantities of zinc in the daily diet are the main reason why zinc deficiencies occur. Zinc deficiency is uncommon in areas where the diet is high in…
“The Synthesis of Zinc Chloride”, what a peculiar name for a lab that does not even involve synthesis. Synthesis, by definition, is when two elements are combined in a chemical reaction,but that is not the case. In this lab we are combining zinc, an element, and hydrochloric acid, a compound, but combining a compound and an element is not synthesis, it is single replacement. We are taking zinc and hydrochloric acid and making zinc chloride and hydrogen, a single replacement, but what occurred during that replacement?…