http://www.neonlightssigns.info/argon-field/
 |
No items matching your keywords were found.
|
No items matching your keywords were found.
Argon Field
Someone help with JEST 2008 physics question?
1. Equal volume of H2 and O2 gases are in thermal equilibrium in a chamber. Then
(a) the average energy of H2 and O2 molecules are same.
(b) the average energy of O2 molecule is eight times higher than H2 molecules.
2. The density of gas molecules in a room in STP is approximately
(a) 1025 molecules/m3 (b) 1020 molecules/m3
3. A particle is in rest in a quantum mechanical box of length L. If the size of the box is reduced slowly to L/2, then the energy of the particle
(a) remains unaltered (b) increases twice (c) reduces to half
4. Three charges -2q, +q, and +q are placed at (-a, 0), (0, 0), and (+a, 0). At r>>a, the electric field varies as,
(a) 1/r (b)1/r2 (c)1/r3 (d) 1/r4
5. Of the below liquids, which one has the very low boiling point
(a) Nitrogen (b) Helium (c) Hydrogen (d) Argon
1. H2 and O2 have the same number of rotational/translational degrees of freedom. The answer is thus (a).
2. Use gas law pV=NkT, where k=Boltzman constant.
3. No particle confined in space is ever at rest (due to the uncertainty principle). Presumably who wrote the questions means that the particle is in the groundstate of the potential well.
The energy of the particle in a box having infinite potential walls is
E=hb^2(kx^2+ky^2+kz^2)/(2m)
(where hb denotes Planck's constant divided by 2 pi)
Now kx=nx pi/Lx, ky=ny pi/Ly , kz=nz pi/Lz., where nx,ny,nz are positive (non-zero) integers. Assume that Lx=Ly=Lz=L. Then:
E=hb^2 pi^2(nx^2+ny^2+nz^2)/(2m L^2). Hence, if L is slowly reduced by half, the energy increases a factor of four.The quantum numbers nx, ny, nz do not change if L is changed adiabatically (infinitely slowly).
Whoever wrote this problem sure botched it.
4. The total charge is zero, but the distribution has a nonzero dipole moment. The electric field is that of a dipole, which varies as 1/r^3 (inverse cube of the distance).
5. Helium. To my knowledge, Hydrogen solidifies at atmospheric pressure at a lower temperature as Helium, but the question refers to a liquid-gas phase transition, not solid-gas. I'm not completely sure about this one, though.
|
No items matching your keywords were found.
|
No items matching your keywords were found.
|
No items matching your keywords were found.
|
No items matching your keywords were found.
|
No items matching your keywords were found.
|
|
Argon $126.75 No Synopsis Available |
|
|
Argon Soap $5 Argon Soap by Organix South - 4 oz Bar Type: Soaps & Bodywash |
|
|
Neon and Argon Works $34.99 Keith Sonnier Neon and Argon Works - Collectable Print |
|
|
Bushnell Matte Elite Tactical 5-15x40 Argon AO MilDot Riflescope ET5154 $421.49 Our top-of-the-line offerings being the new Elite 6500-inspired options with a 6.5x magnification range. Features: A great long-range shooting instrument with a front parallax adjustment, Adjustable objective, Sunshade, Parallax setting from 10yds. to infinity, RainGuard HD, Ultra Wide Band Coating, Fully multi-coated optics, “Blacked-Out� cosmetics, Target turrets, and All the same great features found in our Elite products, now offered to our “Elite� personnel. Power / Obj Lens 5-15x 40mm. Reticle Mil-Dot. Weight 21 oz. Length 14 inches. Field of View (ft@100 ft. / m@100 m) 21/6.3@5x / 7/2.1@15x. Eye Relief (in / mm) 3.5 / 89. Click Value in@100 yds / mm@100m .25 / 7. |
|
|
4 Pk Argon Cartridge(Pack of 2) $28.3 4 Pk Argon Cartridge. Preservino Pws-G Argon Cartridge, 4 Pk.Includes 4 Argon Gas Cartridges For Use With All Of Preservino/Pek'S Wine Preservation Systems; Each Cartridge Contains High Purity Argon Gas--The Same Gas Used By The Finest Winemakers; 4 Pk. |
|
|
Argon Pendant $252 A distinctive glass upon glass design characterizes this unique pendant. The bottom glass diffuses the light while the metal grate inserted in the upper glass facilitates heat dissipation. Fixture is supplied with 6�, 16� and 22� support rods with a brushed steel finish, which may be combined for a maximum height of 50". |
|
|
The Argon Deception $5.82 No Synopsis Available |
|
|
Osprey Packs Argon 85 Backpack $398.95 Sized to accommodate a week's worth of backpacking or mountaineering gear, the Osprey Argon 85 backpack features an ergonomically enhanced suspension and hipbelt design specifically made for men. While most hiking, backpacking and climbing packs are all about stowing gear, Osprey's Argon 85 combines those storage options with a supportive AirScape backpanel, BioForm A/X features and a ReCurve Suspension for an exceptional fit. The Osprey Argon 85 also has an AquaSource ReCurve hydration pouch that connects either to the backpack's internal backpanel or on top of contents inside the pack. Like other Argon series backpacks, the Argon 85 has a removable top pocket that doubles as a lumbar pack for short excursions around your backcountry campsite. Lycra/nylon blended stretch panels along the front and side pockets easily expand to accommodate additional camping and outdoor gear without straining zippers and straps. |
| Account limit of 2098 requests per hour exceeded. |
Nanoballoon - C60 fullerene filled with argon atoms
Please help me in field of Chemical Euqilibrium...?
My question is this:
There is a euqilibrium system, containing N2,H2 and NH3. The equation of the system is:
N2(g) + 3H2(g) <=> 2NH3(g)
If we add an amount of Argon (Ar, Z=36) gas to the system, What will happen on the euqilibrium, and amount of the N2,H2 and NH3? Does Euqilibrium System changed?
(Notice that the amount of the Argon gas is not so much to reduce the system's volume in a notable size.)
Since the amount of the Argon gas is not so much to reduce the system's volume in a notable size, the PARTIAL PRESSURES of the reactants and the product is also affected in a small way.
Moreover Argon is inert.
Due to change in partial pressure , only the equlibrium constant is affected. Thus the time of attainment of chemical equilibrium is affected and the POSITION OF CHEMICAL EQUILIBRIUM remains UNAFFECTED.
The amount of N2, H2, NH3 remains the same as it was before addition of argon.
