What is packing ? What are its advantages and disadvantages?

Q: Many heat-sensitive and oxygen-sensitive solids, such ascamphor, are purified by warming under vacuu...

A: The purification process of camphor involves warming under vacuum. In this process, solid directly v...

Q: If K = 0.121 for A 2 + 2B     2AB, then for 4AB     2A 2 + 4B, K would equal:

A: The resultant reaction is obtained by inverting the first equation and then multiplying the entire e...

Q: When photons with a wavelength of 310. nm strike a metal plate, the maximum velocity of the ejected ...

A: Minimum amount of energy required to remove an electron from an atom is electron binding energy.  

Q: 2.40 g of an unknown gas at STP fills a 500. mL flask. What is the molar mass of the gas?

A: Given: Mass of unknown gas=2.40g The volume of the gas=500ml=0.5L To find: The molar mass of the gas...

Q: Explain with every step

A: RRK model explains about the chemical reactivity.  

Q: Which process is used as nuclear energy application for Uranium enrichment?

A: Uranium enrichment is a process that is necessary to create an effective nuclear fuel out of mined u...

Q: A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs ...

A: Molarity is the number of moles of solute dissolved in per litre of solution. It is denoted by M. It...

Q: The excess Gibbs energy of a certain binary mixture is equal to gRTx(1 − x) where g is a constant an...

A: n

Q: A chemist titrates 250.0 mL of a 0.8331 M butanoic acid (HC,H,CO,) solution with 0.5749 M NaOH solut...

A: Molarity dilution equation: Given data: Concentration of butanoic acid=0.8331M. Volume of butanoic ...

Q: Methane is oxidized in the atmosphere by photochemical reaction. Write the chemical equation of this...

A: Since the methane is getting oxidised. Hence the addition of oxygen will take place on methane and r...

Q: Write the cell reaction and electrode half-reactions and calculate the standard potential of each of...

A: SOLUTION: Step 1:

Q: 2 K3PO4 + 3 Ba(OH)2 -> Ba3(PO4)2 +6 KOH total ionic? net ionic?

A: The total ionic equation is used to represent the molecular equation, wherein all the reactants and ...

Q: What is the major alkene formed when A is treated with POCl3 andpyridine? Explain why the major prod...

A:

Q: For the following combustion reaction, determine how the equilibrium will shift with the following c...

A: Le Chatelier's principle states that when a chemical system in equilibrium is disturbed by changes i...

Q: Multiple  choice 1)All this compounds are expected to exhibit hydrogen bonding EXCEPT A)H2O B)Nh3 C)...

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

Q: A student mixes 10.00 mL of a 0.00150 M solution of iron(III) nitrate with 2.00 mL of a 0.00150 M po...

A: Given data is:  Volume of iron(III) nitrate = 10.0 mL Volume of potassium thiocyanate = 2.00 mL Volu...

Q: Find a set of coefficients that balance the following equation: C32 H64O7 + O2 -----> CO + H2CO3

A: Given:   The unbalanced chemical equation is shown below.

Q: 10.0 g of ammonium nitrate (ΔHsoln = 25.7 kJ/mol, molar mass = 80.0 g/mol) dissolves in 100.0 g of w...

A: The heat released when ammonium nitrate dissolves in water is given = ΔHsoln = 25.7 kJ/mol Hence whe...

Q: Which reaction is most likely to have a positive ΔSsys?a) SiO2(s) + 3 C(s)¡SiC(s) + 2 CO( g)b) 6 CO2...

A:

Q: A piece of silver of mass 362g has a heat capacity of 85.7 J/degrees Celsius. What is the specific h...

A: Specific heat capacity is defined as the amount of heat required to change the temperature of 1 gram...

Q: Use Lewis symbols to determine the formula for the compound that forms between each pair of elements...

A: Lewis symbols show the electrons in the outermost energy level. They are helpful in examining the el...

Q: Since the rate of ozone destruction depends on [Cl], can Cl be considered acatalyst for the reaction

A: CFC molecules are made up of chlorine, fluorine and carbon atoms and are extremely stable. This extr...

Q: For  highlighted carbon atom , identify which atomic orbitals are used to form each σ bond and which...

A: SOLUTION: Step 1: The first highlighted carbon with triple bond is SP hybridized. The carbon-carbon ...

Q: Draw an MO energy diagram and predict the bond order of Be2 + and Be2- . Do you expect these molecul...

A: MO diagram : Molecular orbital will form from linear combination atomic orbitals.  Total number of a...

Q: if a box of cereal contains 990 mg of potassium, how many moles of K are present in the box? [1000 m...

A:

Q: To 14.8 cm3 of a 1.5 M H2SO4 , enough water is added to produce a 0,18 M H2SO4 solution. How much wa...

A: During the process of dilution, the number of moles of the solute H2SO4 remains the same.  Thus, we ...

Q: Under what circumstances, if any, does a sample of solid AgCl completely dissolve in pure water?

A: The number of moles of a solute that is dissolved per litre of solution is termed as Molar solubilit...

Q: What is the mass (in grams) of 7.50 L of propane vapor (C₃H₈) at STP?

A: According to ideal gas equation, PV= nRT where, P is pressure V is volume n is number of moles R is ...

Q: For the reaction CS2 (9) + 302 (9) → CO2 (9) + 2SO2 (9) AS° is equal to -143 J/K. Use this value and...

A: The reaction given is  

Q: 16.5 mL of 0.228 M NaOH was required to neutralize 15 mL of an unknown H2SO4 solution.  What is the ...

A: The neutralisation reaction between NaOH and H2SO4 is  2 NaOH + H2SO4 ------> Na2SO4 + 2 H2O  

Q: Calculate the mass percent by volume of 43.1g of glucose (CH12O6, MM = 180.2 g/mol) in 325 mL of sol...

A: Given : mass of glucose = 43.1 g And volume of solution = 325 mL  

Q: Write the rate law for the following reaction based on the data given below. [OCl-] + I−   →    OI- ...

A: The general form of the rate law for the given reaction would be: Where alpha and beta are the corr...

Q: At STP, 13.50 mol of gas occupies approximately what volume in liters?

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant = 0.08...

Q: Account for the relationship between the rate of a reaction and its activation energy.

A: Concept introduction: Activation energy of a reaction is the minimum amount of energy that is to be ...

Q: Balance the chemical equation and assume there is 0.500 mol of the first reactant listed to determin...

A: Given: Barium hydroxide pentahydrate is dehydrated to generate barium oxide and water.  

Q: What is the product of the following reactions?

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for yo...

Q: A comic book villain is holding you at gun point and is making you drink a sample of acid. He gives ...

A:   Strong acid with pH = 5 pH = -log [H+] [H+] = 10-pH = 10-5 = 1x10-5 M [H+] =1x10-5 M Strong base w...

Q: A sample of grape juice has a pH of 3.80. What is the hydroxide-ion concentration of this solution? ...

A: The pH of the solution can be mathematically expressed as: According to the given information, the ...

Q: How many grams of NH3NH3 form when 22.8 LL of H2(g)H2(g) (measured at STP) reacts with N2N2 to form ...

A: The reaction given: N2(g)+3H2(g)→2NH3(g) given volume of H2 = 22.8 L Mass of NH3 = ? 1 mole of any g...

Q: What reaction conditions are needed to convert (R)-2-ethyl-2- methyloxirane to (R)-2-methylbutane-1,...

A: In the presenc of base, the given compound undergoes in SN2-mechanism and nucleophile attacks the le...

Q: Draw the products of attached reaction, and indicate the stereochemistrywhere appropriate.

A: Given reaction,        

Q: 61) In terms of collision theory, to which of the following is the rate of a chemical reaction propo...

A:  In terms of collision theory, the rate of a chemical reaction proportional to:

Q: Devise a synthesis of attached product from the given starting material.  More than one step is requ...

A:

Q: The first-order radioactive decay of iodine-131 exhibits a rate constant of 0.138 d−1. What is the h...

A: Like chemical reactions, nuclear reactions are type of chemical reaction only but here in place of m...

Q: Please draw two Arsenic Trichloride molecules and show how they would beattracted to one another. Sh...

A: The molecular formula for Arsenic trichloride is AsCl3. It is a covalent molecule in which the centr...

Q: Help me with this convert factor

A: Mole is the amount of the substance that contains the same number of particles or atoms or molecules...

Q: 15. The following set of data was obtained by the method of initial rates for the reaction: 2 NO2 (g...

A: The rate law for the given reaction as shown in equation (1). In equation (1), k is the rate constan...

Q: When excess solid Mg(OH)2 is shaken with 1.00 L of 1.0 M NH4Cl solution, the resulting saturated sol...

A:

Q: What is monometer? What will be the length of mercury column in barometer in terms of Psi?

A: A manometer is a scientific instrument used to measure gas pressures. Open manometers measure gas pr...

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.