A U-shaped tube is divided into two equal compartments by a semipermeable membrane in the center of the tube. If 0.5 L of a 0.50 M saline is added to both sides of the tube at 25.0 C what is the osmotic pressure acting on the membrane?     In the previous question, what was the value for the molality (m) of the sucrose solution you found which is needed to calculate the change of the boiling point?

Q: What is the difference between SiO2 that is cooled slowly and SiO2  that is cooled quickly?

A: The rate of cooling has direct connections with the amount of crystallization. Slow cooling gives la...

Q: diffrentiate between bonding molecular orbitals and anti-bonding molecular orbitals.

A: The differences between bonding molecular orbitals and anti-bonding molecular orbitals are :

Q: Alkyl halides can be converted into alkanes by which reaction?

A:

Q: Identify the two steps of glycolysis in which ATP is produced.

A:

Q: What are liquid crystals ? explain its types

A: A state of matter whose molecules are characteristically aligned as a solid crystal but they exist i...

Q: 85.  Solve these problems about lumber dimensions. (a) To describe to a European how houses are con...

A:

Q: 75.  In Canada and the United Kingdom, devices that measure blood glucose levels provide a reading ...

A: The concentration of glucose (C6H12O6) in mg/dL is calculated as,

Q: How are the silica tetrahedrons linked for CaSiO3 ? Which class of silicates does this compound belo...

A: The given compound CaSiO3 is example of pyroxene. The main formula unit in it is SiO32-. The ionic b...

Q: What happens when benzene reacts with chlorine in the presence of sunlight?

A: Benzene will undergo addition reaction with Cl2 in presence of sunlight.

Q: In group 16 , why oxygen shows abnormal behaviour ?

A: The elements in a modern periodic table are arranged in an increasing order of their atomic number. ...

Q: which of the following is optically active: a  1,3-dichloropropane b  2-chloro butane c  propylene c...

A: Optical activity:The phenomenon by which chiral molecules rotate plane polarized light in either clo...

Q: Calculate the mole percent and mass percent of Mn in the minerals pyrolusite and rhodochrosite.

A: The mole fraction of a substance is equal to the number of moles by the total number of moles.  Mole...

Q: Describe how nitrogen can be separated from the other components of air.

A: The most common method used to separate nitrogen from air is called fractional distillation.Fraction...

Q: Explain why solid CO2  is referred to as dry ice.

A: The rigid, incompressible objects present in the surrounding are classified as solid. The rigidity a...

Q: What is equivalent conductivity?

A: Definition:When dissolving one gram equivalent of an electrolyte, will generate the conducting power...

Q: How propyne and propene can be distinguished on the basis of physical properties?

A: Propyne and Propene can be distinguished on the basis of physical properties:

Q: Write a mechanism for the dehydration reaction of  β -hydroxybutyryl ACP to yield crotonyl ACP in st...

A:

Q: A 75-kg human is exposed to 32.8 rad of radiation. How much energy is absorbed by the person’s body?...

A: Given, A 75-kg human is exposed to 32.8 rad of radiationUnit conversion:1 Rad = 0.01 Joule/Kg100 Rad...

Q: What is the order of penetration powers of alpha rays, beta rays and gamma rays?

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Q: What kind of reactions are common to aldehydes and ketones? List an example of each.

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Q: >List four metals that occur as elements in their natural state.

A: Native element minerals occur in nature in uncombined form and they have a distinct mineral structur...

Q: Saltpeter and Chile saltpeter are two important mineral sources for nitrogen. Calculate the mass per...

A: Molar mass of saltpeter (KNO3) = 101.1032 g/molMolar mass of chile saltpeter (KNO3) = 84.9947 g/molM...

Q: Calcination, roasting, and smelting are three pyrometallurgical processes. Compare and contrast the ...

A: Calcination is a pyrometallurgical process of heating ore in the absence of air or limited supply of...

Q: 47.  Determine the molarity for each of the following solutions: (a) 0.444 mol of CoCl2 in 0.654 L ...

A: The molarity of each given solution are calculated as,

Q: Rutherfordium-257 was synthesized by bombarding Cf-249 with C-12. Write the nuclear equation for thi...

A: Given,Synthesis of Rutherfordium-257 by bombarding Cf-249 with C-12. The element symbol, atomic numb...

Q: >Nomex, a polyamide used in such applications as fire-retardant clothing, is prepared by reaction...

A:

Q: What is fusion? Why can fusion and fission both produce energy? Explain.

A: The nuclear reactions are a type of chemical processes which lead to the formation of some new nucle...

Q: How can we convert glass into quartz?

A: Glass is an amorphous in nature while quartz is crystalline.Quartz can be converted into glass by me...

Q: Why are amino acids chiral?

A: The organic compound that is composed of amino group and carboxylic group along with an organic chai...

Q: Consider molecules that have two carbons and two chlorines. Draw the structures of three of these wi...

A: The formulas of the molecules that result from two carbons and two chlorides can be C2H4Cl2, C2H2Cl2...

Q: How can you differentiate diffusion and osmosis?

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter, ...

Q: what is the bond order of benzene?

A: The bond order of benzene can be shown in below

Q: Explain why the interhalogen molecule BrCl3  exists but ClBr3 does not.

A: According to periodic properties, the size of the elements increases down the group.  The atomic num...

Q: what are the types of hydrogen bonding? give examples.

A: Hydrogen bonding is the bond between hydrogen formed between hydrogen and most electronegative atoms...

Q: what are intrinsic and extrinsic semi-conductors ?

A: The material that have electrical conductivity in between conductor and semiconductor is known as se...

Q: which is most stable sigma bond or pi bond ?

A: Bond formed due to the end to end overlapping of the orbitals is referred to as sigma bond. In sigma...

Q: >What compound has been historically used to leach gold from gold ores? Why is this process being...

A: The compound that has been used to leach gold from gold ores is sodium cyanide.

Q: <p>Two ligands, A and B, both form complexes with a particular metal ion. When the metal ion c...

A:

Q: What effect do double bonds have within the hydrocarbon chain of a fatty acid?<

A: The carboxylic acid that has long aliphatic chain that is either unsaturated or saturated is known a...

Q: >Lactose is a disaccharide of glucose and galactose. Draw the structure of lactose.

A: Lactose is a disaccharide, formed by the combination of two simple monosaccharide sugars named as gl...

Q: Predict the structure and label the charges on the cations in the mineral hedenbergite, CaFeSi2O6

A: Molecular geometry is the 3-D representation of the molecule in a space. In terms of electron densit...

Q: Write out a stepwise sequence that shows how a racemic mixture of leucine enantiomers can be resolve...

A: The given recemic mixture of leucine enantiomers.  The (S)-form and (R)-forms react with the given o...

Q: Propose a mechanism to account for the formation of Bakelite from acidcatalyzed polymerization of ph...

A: The formation of 2-Hydroxymethyl phenol takes place on the reaction of phenol with formaldehyde in t...

Q: write the chemical composition of pitch blend and draw its structure

A: Pitchblende (UO2) is the ore of uranium. It mainly consists of UO2, and due to oxidation there will ...

Q: Write a nuclear reaction for the neutron-induced fission of U-235 to produce Te-137 and Zr-97. How m...

A: A nuclear reaction for the neutron-induced fission of U-235 to produce Te-137 and Zr-97 is to be wri...

Q: Enter your answer in the provided box. Calculate the pH of a 0.0825 M HCl solution. pH =?

A: HCl completely dissociates since it is strong acid.The concentration of H+ ions  will be 0.0825 M.

Q: Which is more stable NaCl or CsCl?

A: The electronegative difference between Cs and Cl is more so, it has least sable as compared to the e...

Q: >Describe how red and black phosphorus are made from white phosphorus.

A: Preparation of red phosphorous is as follows,Generally, white phosphorus is unstable hence it conver...

Q: what is Faraday's first law of electrolysis ?

A: Electrolysis is the technique that involves the use of direct current for driving the chemical react...

Q: which of the following has higher dipole moment NH3 or NF3 ?

A: In case of NH3, the electronegativity difference between H (2.1) and N (3.0) creates polarity for th...