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Determine the values for the standard pressure and temperature? Why do standard reference values for temperature and the pressure have to be selected when we consider and compare the heats
Calculate the molality of the solution if it freezes at -2.0 degrees Celsius and when an aqueous solution contains the amino acid glycine, NH2CH2COOH.Assuming that the acid does not ionize in water
Determine the temperature, final volume, and work done by 0.5 mol of a gas(Cv = 12.47 J/K/mol and Cp = 20.8 J/K/mol) at 3 atm and 100 °C that irreversibly and adiabatically, Expands against an o
When a titration curve was acquired by titrating 25ml boric acid solution with a 1M NaOH solution, answer the following by using the information given on the curve. Determine the concentration of th
Determine the average rate of decomposition of cyclopropane during the above time intervals and explain why the average rates differ from the others?
Determine the molarity of a Ba(OH)2 solution if 24.55 mLwere needed to reach a phenolphthalein endpoint with a 0.5589gram sample of the primary standard.
Determine the percent KHP (which is having 204.23 g.mol) in an unknown sample if 27.93 mL of 0.1265 M NaOH were needed to reach a phenolphthalein endpoint using a 1.4991 gram sample of unknown.
Calculate the percent Al in the aluminum chloride produced and the percent the Cl in the aluminum chloride produced. A sample of aluminum (Al), weighing 1.500g, reacted totally with an excess of aq
Determine the DS and DH when 1 kg of Cu at 100 C is placed in the 2 kg of water at 0 C in an insulated container which is maintained at 1 atm pressure .
Determine q, w, DU, DH and DSsys and DSsurr, DSuniv for the two expansions. Can you account for any differences between the two results?
Find the molecular formula of benzocaine the following data were obtained from experiments to a local anesthetic, which contains only the hydrogen, carbon, oxygen and nitrogen.
When one mole of two ideal monatomic gases, neon and helium, are separated in a partitioned container where each side of the container is having 22.4 L and the temperature of the system is 273 K, Th
Compute the wavelength of the ejected electron when a light of wavelength 2.53x10-7 m strikes a metal surface, electrons with speed of 9.45x105 m/s a ejected.
If the wave function is given by Ψ 2=N(4x2-2)e-x^2/2 where N is the normalization constant. At what position x is the diatomic molecule least likely to be found? Discuss in detail.
If t1/2 for 14C is 5.73*103years, discuss how old are the scrolls when an artifact was discovered in 1947, and at the time it was undergoing 11 disintegrations per minute per gram.
Calculate the mass of magnesium chloride (95.21 g/mol) can be produced? Magnesium reacts with iron (III) chloride to form magnesium chloride and iron.
Calculate the vapor pressure of a solution of 16 g of glucose (C6H12O6) in 80g of methanol (CH3OH) at the 27 degrees C. At 27 degrees C the vapor pressure of pure methanol is 140 mm hg.
Illustrate the condensed structural formula for the ester produced and the carboxylic acid produced when the ethanoic anhydride reacts with the following alcohols
Sodium hydroxide and acetic acid are combined in the 100 mL of solution. The concentration of all forms of acetic acid combined is 0.1 M and the final pH is 5.g
Determine the molar mass of the solute based on the freezing point depression given that the freezing point depression constant (Kf) for t-butyl alcohol is 8.09 *C/m.
Determine the numbers of moles of NaOH must be added to .5 ml of .355M acetic acid to take the pH to 6 when the acetic acid has a pKa of 4.74
Determine the numbers of liters of sulfur dioxide calculated at STP are formed by the reaction of 4.20 kg of galena with 221 L oxygen gas at the 220 degrees Celsius and 2.00 atm?
Calculate the outcome of the reactions which is represented by the following equations by using the activity series, and the balance any resultant reactions.
Research project scientists often need to synthesize or create the materials that can be used in research. In the case of true research these materials often cannot be purchased.
Why do you think the Cl-C-H bond angles are smaller than the H-C-H bond angles when the H-C-H bond angles in CH3Cl are 111o, where as the Cl-C-H bond angles are 108o.