For convenience, Mechanical Engineering courses are listed below. Not offered during this academic year. Students will be exposed to several mature and emerging technologies through a series of case studies.
Thermodynamic temperature The symbol used to represent temperature in equations is T with SI units of kelvins. The speed of a gas particle is proportional to its absolute temperature.
The volume of the balloon in the video shrinks when the trapped gas particles slow down with the addition of extremely cold nitrogen.
The temperature of any physical system is related to the motions of the particles molecules and atoms which make up the [gas] system. The methods of storing this energy are dictated by the degrees of freedom of the particle itself energy modes.
Kinetic energy added endothermic process to gas particles by way of collisions produces linear, rotational, and vibrational motion.
In contrast, a molecule in a solid can only increase its vibrational modes with the addition of heat as the lattice crystal structure prevents both linear and rotational motions. These heated gas molecules have a greater speed range which constantly varies due to constant collisions with other particles.
The speed range can be described by the Maxwell—Boltzmann distribution. Use of this distribution implies ideal gases near thermodynamic equilibrium for the system of particles being considered.
Specific volume The symbol used to represent specific volume in equations is "v" with SI units of cubic meters per kilogram.
Gas volume The symbol used to represent volume in equations is "V" with SI units of cubic meters. When performing a thermodynamic analysis, it is typical to speak of intensive and extensive properties.
Properties which depend on the amount of gas either by mass or volume are called extensive properties, while properties that do not depend on the amount of gas are called intensive properties.
Specific volume is an example of an intensive property because it is the ratio of volume occupied by a unit of mass of a gas that is identical throughout a system at equilibrium. This concept is easier to visualize for solids such as iron which are incompressible compared to gases.
Since a gas fills any container in which it is placed, volume is an extensive property. This term is the reciprocal of specific volume.
Since gas molecules can move freely within a container, their mass is normally characterized by density. Density is the amount of mass per unit volume of a substance, or the inverse of specific volume.
For gases, the density can vary over a wide range because the particles are free to move closer together when constrained by pressure or volume.
This variation of density is referred to as compressibility. Like pressure and temperature, density is a state variable of a gas and the change in density during any process is governed by the laws of thermodynamics.
For a static gasthe density is the same throughout the entire container. Density is therefore a scalar quantity. It can be shown by kinetic theory that the density is inversely proportional to the size of the container in which a fixed mass of gas is confined.
In this case of a fixed mass, the density decreases as the volume increases. Microscopic[ edit ] If one could observe a gas under a powerful microscope, one would see a collection of particles molecules, atoms, ions, electrons, etc.
These neutral gas particles only change direction when they collide with another particle or with the sides of the container.The Eagle blue high-density polyethylene lab pack drum comes with a plastic lid and a metal lever-lock ring, has a gallon capacity, and can be used to store, transport, and dispose of small, intact containers of hazardous materials and help contain spills.
The task for our lab was to determine the density of water and compare our recordings to the actual density of water listed in our lab packet. Then we were to find the density of an unknown liquid and find out what the substance was by matching its density with densities of substances listed in our packet.
Aerogel is a synthetic porous ultralight material derived from a gel, in which the liquid component for the gel has been replaced with a gas.
The result is a solid with extremely low density and low thermal metin2sell.commes include frozen smoke, solid smoke, solid air, solid cloud, blue smoke owing to its translucent nature and the way light scatters in the material.
Full_VVL_Listing AlphaAnalyeConversions AA_Without_Matching_A AA_Without_Matching_A KG/GAL Kilograms per gallons KG/BATCH Kilograms per batch. experiment date(s): 1 Experiment 1 - Density of Liquids and Solids Goal: To accurately determine the density of an unknown liquid and an unknown solid.
Density = mass units are: g or g where 1 mL = 1 cm3 volume mL cm3 To properly measure density, we need a container whose volume is known to a high degree of.
The Density of Liquids and Solids Objectives The objectives of this laboratory are: a) To determine the density of pure water; In Part A of this lab, the mass and volume of distilled water will be measured in order to determine the Record the ID Code of the unknown solid on your report form.
2. Using the ruler, measure the dimensions.