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How do you solve for n in the Van Der Waals equation?
In short just use algebra to get the equation below Start with [P + a*(n/V)^2] * (V - nb) = nRT which is the standard Van Der Waals equation and solve for n using algebra. which gives the 3rd order equation below. -(ab/V^2)*n^3 + (a/V)*n^2 - (bP+RT)*n + PV = 0 The simplest way to solve this equation is to enter it into Excel and graph it with multible values of n from 0 to whatever gets you to zero. The value that gives you zero is the answer. Be sure you use all the proper units for the other varables. Hope this helps.
How do you draw a model of h2o?
To draw a model of H2O, you can represent it using ball-and-stick models or space-filling models. In a ball-and-stick model, you can use two small balls to represent the hydrogen atoms and one larger ball to represent the oxygen atom, connected by sticks to show the bonds. In a space-filling model, the atoms are represented by spheres whose sizes reflect their van der Waals radius, showing how they pack together in space.
Why is the boiling point of GeH4 higher than SiH4?
Boiling point of SiCl4 is lower than expected. Its chlorine atoms have higher negative charge due to lower electro negativity of silicon. Therefore the molecules repel each other. this results in lower b.p of SiCl4
How do intermolecular forces affects solvation?
This can be a very complex question that you might be able to use some high end computational chemistry codes. But simply put you have van der waals forces, hydrogen bonding, and ionic bonding. You can think of it like coulumbic repulsion and attraction. hydrogen bonding has a slight negative charge on the oxygen and a slight positive charge on the hydrogen due to the covalent bond and the electron spending more time on the oxygen than the hydrogen, and the oxygens lone pair of electrons (this is inside a water molecule). Outside of the water molecule you dissolve salt nacl = na+, cl- . Since water has a slight negative charge on the oxygen, the oxygens in water molecules surround the Na+ atom pulling it into solution, and the hydrogen slight positive charge surrounds the chlorine anion. generally speaking polar groups like alcohols, ketones, amines,carboxylic acids are water soluble due to hydrogen bonding as long as there is not a large nonpolar R group. Van der waals forces control solubility on oily substances, those with large R groups like oil. since oil is a long chain of carbon it is very covalent with only very small positive and negative charges compared to water. That is why it is impossible to dissolve oil and water. Soap on the other hand has an oily R group bonded to a polar head. so one part of the molecule is polar (hydrogen bonding), and the other is non-polar and oily. A soap molecule can homogenize a solution of water and oil by being the bridge between the water molecule and the oil molecule. Hope this helps.
Why is sulfur a solid?
Yes, sulfur is a bright yellow solid at room temperature, with melting point of 115 degrees Celsius. The pure element exists as a cyclic octatomic molecule with chemical formula S8. Sulfur is a solid...... it is a brittle solid
When is it necessary to use an equation such as the van der waals equation to describe a gas?
The van der Waals equation is necessary to describe a gas when it deviates significantly from ideal behavior, particularly under conditions of high pressure and low temperature. Ideal gas laws assume no interactions between gas molecules and that they occupy no volume, which is not the case for real gases. The van der Waals equation accounts for molecular size and intermolecular forces, making it more accurate for real gases, especially those that are polar or have larger molecular sizes.
What are the role of Van der Waals interactions in biological molecules?
(W. Kohn, G. Tiana) Density functional Theory (DFT), in principle, includes Van der Waals energies, but approximations rooted in the local density approximation (LDA), such as generalized gradient approximations (GGAs) do not. Recent and ongoing work tries to use time-dependent density functional theory to calculate Van der Waals attractions between two systems of interacting atoms (molecules, clusters, solids, etc.) of arbitrary size, shape and composition.
How do you calculate dU from the van der waals equation of state under isothermal expansion?
To calculate the change in internal energy (dU) during isothermal expansion using the van der Waals equation of state, you first need to know the initial and final volumes. Use the van der Waals equation to calculate the work done during expansion, which is equal to nRT ln(Vf/Vi). Since it is an isothermal process, the change in internal energy will be equal to the negative of the work done.
How do you solve for n in the Van Der Waals equation?
In short just use algebra to get the equation below Start with [P + a*(n/V)^2] * (V - nb) = nRT which is the standard Van Der Waals equation and solve for n using algebra. which gives the 3rd order equation below. -(ab/V^2)*n^3 + (a/V)*n^2 - (bP+RT)*n + PV = 0 The simplest way to solve this equation is to enter it into Excel and graph it with multible values of n from 0 to whatever gets you to zero. The value that gives you zero is the answer. Be sure you use all the proper units for the other varables. Hope this helps.
How are plastic polymers joined together?
Do you mean at the molecular level (covalent and ionic bonds, and van der Waals forces take care of this), or do you have two plastic parts you want to join together? If it's the second... you can use adhesivesyou can use fastenersyou can weld them togetheryou can design the two objects so they mateor you can cast the second piece around the first one.
Leonardo da vincis use of composition in his paintings was influenced by what other renaissance artist?
Van der Weyden
What is the crystal system of graphite?
Graphite crystallizes in the hexagonal crystal system. Its structure consists of layers of carbon atoms arranged in a hexagonal lattice, with weak van der Waals forces between the layers, allowing them to slide over each other easily. This layered arrangement contributes to graphite's lubricating properties and its use in applications like pencils and batteries.
Are Van Der Graff generators suitable for home use?
Van Der Graff generators are suitable for home use. For someone who is mechanically savvy there are several guides available online that can help you construct your own Van Der Graff generator for home experiments and fun. Van Der Graff generators are more designed for commercial use,they are very pwoerful. I would not recomend using a Van Der Graff generators in a home.
What gloves does van der sar use?
Goalkeeper gloves
What has the author C Van Der Burgh written?
C. Van Der Burgh has written: 'The aetiology of drug use' -- subject(s): Drug abuse, Research
Do crested geckos have suction cups?
Crested geckos have millions of fine hair like structures on the bottom of their feet called setae. These millions of setae use the van der walls force in order to use molecular forces to grab and pull to surfaces..
What techniques does Eddie van der Meer use on the guitar to create his unique sound?
Eddie van der Meer uses a combination of fingerpicking, percussive techniques, and harmonics to create his unique sound on the guitar.
