Compare two open (large tube) and filled (packed) columns.

Q: vapor pressure of water changes with perature, as shown here (C) P (torr) 21 187 22 198 23 21.1 24…

A:

Q: calculate the ionic attractive energy between K and O ions per mol of the material.

A: Between  K+ and O2-  ionic bond is formed. Ionic bonds are formed when positively and negatively…

Q: What type of column packing material is used where diethylamino ethyl sephadex belongs?

A: Sephadex is a cross-linked dextran gel used for gel filtration. It was launched by Pharmacia in…

Q: Explain the terms sorption and desorption.

A: Adsorption is a process in which molecules are concentrated at the surface of the other substance.…

Q: Dalton’s Law:Dilute hydrochloric ácidos added to a 0.500 g sample of an alloy containing zinc and…

A: Pressure of hydrogen gas collected can be determined using Dalton’s law.

Q: Define the term hydraulic fracturing?

A: The term hydraulic fracturing has to be given,

Q: In the instantaneous evaporation method, no more than one substance can be evaporated during one…

A: A question based on analytical process that is to be accomplished.

Q: All of the following tubes are of equal length. The pressure at each end of the tubes are indicated…

A:

Q: What is supercritical fluid?

A: ANSWERE IS DISCUSSED BELOW :

Q: 1.84 0. atm psi 13.9 in. Hg 28.7 ст Hg 74.8 mm Hg torr Ра kPa bar

A: The relationships which we will be using are, 1) 1 atm = 14.696 psi 2) 1 atm = 29.92 in Hg 3) 1 atm…

Q: Describe the effects of various conditions on Alveolar Gas Pressures?

A: Interpretation-  To describe the effects of various conditions on Alveolar gas pressure -…

Q: 16. Figure shows variation of log D (Diffusivity of Au atoms, self diffusion). as a function of 1/T.…

A: diffusion of metal ions and ARRHENIUS PLOTS

Q: Calculate the pressure of the DRY gas at 22°C Ptotal Pbutane + P H20 %3D

A: Answer:- This question is answered by using Dalton's partial pressure law which states that total…

Q: Determine the exact hardness in units of mg/L as CaCO3. Ba2+ contributes to hardness as well.

A: Given that,

Q: List two conditions under which a gas is least likely tobehave ideally.

A: Two conditions in which a gas is least likely to behave ideally are high temperature and low…

Q: Briefly describe the proper technique for heating liquids in test tubes to temperatures below 100…

A: There are number of techniques for heating liquids in test tube. Some of these are: heating on…

Q: Cyclists sometimes use pressurized carbon dioxide inflators to inflate a bicycle tire in the event…

A: Since the pressure of carbon dioxide molecules inside the tire can be calculated using  PV = nRT…

Q: 4. Explain THREE factors that influence the rate of diffusion.

A: 1) Extent of the concentration gradient: The greater the difference in concentration, the more rapid…

Q: - volume of 100.0 mL of hydrogen gas was collected over water at a emperature of 60.0 °C and a…

A: The question is based on Dalton's law of partial pressure and ideal gas equation.   Dalton's law of…

Q: What is the proper order of setting up a pendant drop apparatus using the following? Thank you :)

A:

Q: Define cohesion and adhesion, and how they can predict capillary action.

A: Adhesion can be defined as the sticking tendency of particles of different types of material.…

Q: An evaluation of R was performed, following the procedure described in this module. The barometric…

A: Mass of Mg metal = 0.033 g

Q: Can you draw a graph of molar conductivity using the data?

A: According to Debye-Huckel-Onsager theory the molar conductivity is related to the concentration for…

Q: Q.1/ For Simple Cubic shown in figure below, determine the fraction of the volume filled with hard…

A:

Q: bar 1 bar = 100,025 ercury mm Hg 1 mm Hg = 133- Pa 1 e inch psi 1 psi = 6.892 x torr 1 torr = 133.32

A:

Q: How does PEG / PPG Dimethicone (below) differ from a regular linear Dimethicone. What…

A: PEG/PPG dimethicone differ from a regular linear Dimethicone in the sense that these polymers have a…

Q: Describe the process of simple diffusion?

A: Definition: Diffusion is the movement of particles from the region of high concentration to the…

Q: What are the types of orientation that shrink films go through?

A: A shrink can go through one direction (unidirectional or mono-directional) or in both directions…

Q: Which of the following apparatus is used to hold the crystals in melting point determination test…

A: 1.  Answer - The correct option is (B) Capillary tube  Explanation - The melting point of an organic…

Q: 2. What is typically the determining (limiting) rate when large crystals form? Explain.

A: The size of the crystal is dependent on the rate of the process of cooling.

Q: Define the term Diffusion?

A: Diffusion is the movement of particles from a region of high concentration to a region of low…

Q: can you write and intro and explain about LNG liquefaction process and cooling of natural gas

A: Natural gas is converted to a liquid in a liquefaction plant,or “train”. An LNG train performs three…

Q: A sample of lead glass is prepared by melting together 20.0g silica , SiO2 and 80.0g of lead (II)…

A:

Q: List the indices of the nanotubes (format: armchair (5,5)).

A:

Q: Consider the following chemical reactions: KClO3 (s) ----------> KCl(s) + O2(g)  NaNO3(s)…

A: Given the total mass of the mixture = 5.0000 g Mass of residue (KCl+NaNO2) formed = 3.8600 g. The…

Q: 4. Explain why the pin must be replaced into the pinhole during cooling of the flask.

A: DUMAS method : This is a method to find the molecular weight of a volatile liquid. If we add less…

Q: Calculate final MgCl2 concentration in mM for tube 2 and 3.

A: In each of the tube, the original MgCl2 solution is diluted by adding the substrate and Tris-HCl…

Q: Calculate the height in meters of a column of liquid glycerol (d = 1.26 g/cm3) required to exert the…

A: Pressure will remain same then we can write dHg×g×hHg = dalc×g×halc Where dHg = density of mercury g…

Q: The role of single molecule in nano particle junctions

A: Answer. Stimuli-responsive molecular junctions are a type of nanoelectronic device in which the…

Q: 1. An evaluation of R was performed, following the procedure described in this module. The…

A: This question is simply based on the ideal gas equation and dalton's law of gases. The complete…

Q: 6 A sample of lead glass is prepared by melting together 20.0g silica , SiO2 and 80.0g of lead (II)…

A: we are required to find the mole fraction of silica in the glass which is prepared by mixing 20 g of…

Q: (a) (b) C

A: A) In this gas compressed and formed liquid... Or it may be liquid.  B) in this 2 different fluid…

Q: 4. Calculate the height of a column of liquid glycerol (d 1.26 g/cm), in meters, required to exert…

A: The values are given as follows:

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.