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Boron triflurodie reacts readily with ammonia to form a compound, BF3NH3 Explain what formal charge is present on boron in the product?
Determine the enthalpy of fusion of water using the data below: Entropy of water @ 298.15 K = 132.88 J/mol-K
Cement used in mortar & the making of concrete uses a monohydrate of CaO (often called the quicklime).Discuss what volume of water is needed to hydrate a standard 20 kg bag of quicklime?
Nitrogen gas reacts with oxygen gas to form the dinitrogen trioxide. Given 5moles oxygen determine how many moles of nitrogen do you require?
Find out the H+ ion concentration of the resulting solution. 2.05 g of sodium acetate was added to 100 mL of a 0.1 M HCl solution. If 6 mL of a 1 M HCl is further added to it, explain what wil
Assuming the complete dissociation of HCl and the lead salt, determine how much HCl is to be added to a 0.001 M lead salt solution to just prevent precipitation when saturated with the H2S.
The calorimeter contained 500 g of water and the temperature rise measured was 1.40oC when a sample of magnesium metal (0.1946 g) was ignited in a constant-volume calorimeter of heat capacity 1349J/o
Aluminum hydroxide and nitric acid reacts to produce the water and aluminum nitrate. Add the coefficients (including the 1) when you have balanced this equation.
Rust stains can be removed by washing a surface with a dilute solution of oxalic acid (H2C2O4). Explain what mass of rust can be removed by the 1.0 L of a 0.14 M solution of oxalic acid?
Discuss the coordination chemistry and chemical speciation utilized in the analysis of fluoride in water samples by fluoride ion-selective electrode.
Suppose 264 g of Na metal is formed. Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal.
Determine how many seconds does it take to deposit 2.87 g Ni on a decorative drawer handle when the 13.1 A is passed through a Ni (NO3)2 solution?
What is the molarity of the sulphuric acid when a 10.00 mL sample of sulfuric acid from an automobile battery requires 35.08 mL of 2.12 M sodium hydroxide solution for complete neutralizati
Determine the concentration of an aqueous KCl solution if the 25.00 mL of the solution gives 0.430 g of AgCl when treated with an excess of AgNO3?
Illustrate the skeletal structure of the compound with molecular formula C3H4Cl4 whose proton NMR spectrum contains a downfield quartet and an up field doublet with relative integration of 1:3.
Determine the free-energy change for ammonia synthesis at the 25oC given the following sets of partial pressures:
In qualitative analysis, Hg22+, Ag+ and Pb2+ are separated from other cations by addition of the HCl. Determine the concentration of Cl- needed to just begin precipitation of AgCl, Hg2Cl2, a
Show whether this reaction is a thermally allowed or forbidden reaction using frontier molecular orbital. Consider the internal addition reaction of cis 1, 3, 5 hexatrieneto form 2,2,0- bicyclohexe
Chemist heated the 5.122g of a hydrate to constant weight of the 2.788g.The Formula weight of the anhydrous salt is the 258 g/mol.
Oil of average Cp= 0.8 Btu/(lb)(F) flows from an open reservoir standing on a hill 1000ft high into another open reservoir at the bottom.
Calculate the electron-geometry type and shape molecule for C4H10, butane? Determine how many electron domains are in C4H10, butane?
Determine the amounts of components in the mixture at equilibrium given that K=870 for the reaction H2+I2 <-- --> 2HI (g) A sealed container was filled with 0.3 mol H2 (g), 0.4 molI2(g) and 0
Determine the electron-geometry type and shape molecule for CH3CH2CN? Determine how many electron domains are in CH3CH2CN?
Determine the wavelength of the x-rays in another experiment if when diffracted by the same crystal sample they are observed at an angle of 2q=34.46o. X-rays of a wavelength l=1.500 angstroms are sc
The molecules of the vapor phase are found to effuse through a tiny hole at the 0.28 times the rate of effusion of Ar atoms under the same conditions of temperature and pressure.