Comparing the crystal structure of α-FePO4 & β-FePO4
Firstly, the crystal structures of the alpha and beta Iron Phosphate can be identified from the paper. The lower temperature form, α-FePO4, has the space group P3121, while the higher temperature form β-FePO4, has the space group: P6422. These space groups translates to the lattice symmetry of trigonal and hexagonal respectively. The two space groups are chiral. α-FePO4 is the main form of Iron Phosphate in room temperature since…
Observation & Calculations for Nanorefrigerant
Graph of C.O.P. vs. Nanoparticle Concentration for Nanorefrigerant.
C.O.P RESULTS WHEN NANOPARTICLE MIXED IN R134A & POE OIL
Figure 5.1. Graph of nanorefrigerant C.O.P vs. nanolubricant C.O.P.
5.2. GRAPH OF PERCENTAGE CHANGE IN THE COP OF THE SYSTEM
Figure5.2. Graph of percentage C.O.P of nanorefrigerantvs. nanolubricant.
Here the result shows the percentage change in the C.O.P when the air conditioning test rig run on the nanorefrigerant and…
1. Lattice symmetry of quartz, α-FePO4 and β-FePO4:
Quartz has a trigonal lattice structure with space group P3121 (group no. 152).
At any temperature below 980K, Iron phosphate exists as α-FePO4, which has a trigonal lattice structure with space group P3121 (group no. 152) where iron, phosphate and oxygen occupy Wyckoff position 3a, 3b and 6c respectively. As the temperature rises up to and above 980K, α-FePO4 exhibits α-β transition and becomes β-FePO4 that shows…
In this experiment, solid magnesium was conducted in a chemical reaction with hydrochloric acid solution. The three objectives include: measuring the gas production of a chemical reaction by a pressure change, determining the mass of the hydrogen gas produced in the reaction, and determining the effectiveness of the procedure by calculating the percent yield. In order to complete these objectives, a flask containing the magnesium ribbon was completely submerged into a large beaker filled with…
Concept: Solid, liquid, or gas
Sunshine State Standards/Access Points/Common Core:
SC.2.P.8.2- Identify objects as solid, liquid, or gas.
Primary Instructional Objectives:
- Students will be able to identify what the difference is between a solid, liquid, and gas.
- Students will be able to identify examples of solids, liquids, and gasses.
- Students will be able to sort objects by whether they are solid, liquid, or gas.
- Students will be able to define matter and where you…
by approximately 27.9% (figure 1). While the increase in recycling is outstanding, the transformation into a recycling, environmentally friendly country is not completed quite yet. Americans are collectively producing a greater amount of municipal solid waste (MSW) and are not properly disposing of said waste; for example: one will waste an aluminum can rather than recycling the can, or one will throw away leftover pizza rather than composting the pizza. As the amount of MSW increases, the…
According to a study issued by the U.S. Environmental Protection Agency (EPA), the United States generates approximately 251 million tons of municipal solid waste (MSW) a year. Out of the 251 million tons of MSW, 34.5% was recycled and composted. That is equivalent to the average American recycling and composting 1.51 pounds of their daily 4.38 pounds of MSW . Of the 34.5% of MSW that is recycled, which equates to 86 million tons, 65 million tons of MSW was recycled, and 21…
Crystalline and Amorphous Solids
Solids can be divided into two classes: crystalline and amorphous. Crystalline solids have well-defined edges and faces, diffract x-rays, and tend to have sharp melting points. In contrast, amorphous solids have irregular or curved surfaces, do not give well-resolved x-ray diffraction patterns, and melt over a wide range of temperatures.
Crystalline solids, or crystals, have distinctive internal structures…
elements react together it forms –iron oxide (rust). Rust can reduce the effectiveness and efficiency of the material. So you should be very careful whilst handling steel in construction.
Moreover, metallic bonds have a simple crystal lattice in solid state and are the weakest primary chemical bonds. Hence the reason to why pure metals are dissolved with other elements such as: carbon for mild steels. Metal alloys have increased strength and hardness. The structure of alloys reduces the space…
pin inserted through eye. The pin has a head at one end and at other end there is a taper pin or split pin. For gripping purpose the ends of the rod are of octagonal forms. Now, when the two eyes are pulled apart, the pin holds them together .The solid rod portion of the joint in this case is much stronger than the portion through which the pin passes.
The modes of failure are:
1. Shear failure of pin (single…