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Determine the total pressure (atm) of a gas mixture of 0.475 grams of He and 0.726 grams Ne in an 763 mL container at the 150°C?
Calculate the heat capacity of this calorimeter. The combustion of 0.1584 grams of benzoic acid increases the temperature of a calorimeter by 2.54.C. The energy released by the combustion of benzoic
The molar conductance at infinite dilution of AgNO3, NaNO3 and NaCl are 116.5, 105.2 and 110.3 ohm-1cm2mole-1 respectively. Based on this, identify the molar conductance of AgCl at infinite dilut
The resistance of a cell containing the solution at the same temperature was found to be 55ohm. The specific conductance of 0.1N (Normality) KCl solution at the 230C is 0.012ohm-1cm-1. Calculate the
Based on the reaction 4/3Al + O2 --->2/3Al2O3 and ΔG = -827KJ/mole ofO2; Determine the minimum EMF needed to carry out and electrolysis of the Al2O3. (Given F = 96500 Cmole-1)
Acetic acid can be used to make a buffer in the single range among the pH 5.74 and 3.75. But phosphorous acid can be used to make a buffer among two ranges:
Ibuprofen (advil) is an anti-inflammatory, but can cause stomach upset. Acetaminophen (e.g. Tylenol) relieves pain, but is not an anti-inflammatory or anti-coagulative drug.
Michael prepared a buffer of acetate ion and acetic acid by taking the 250 mL of 0.20 M acetic acid and adding the 250 mL of 0.10 M sodium hydroxide.
Determine the pH during the titration of 20.00mL of 0.1M triethylamine (kb=5.2e-4) with 0.1M HCl after the following volumes are added, 0mL, 10mL, 20mL, 25mL.
Water softeners remove metal ions such as Fe3+, Fe2+, Ca2+, and Mg2+ (which make water "hard") by replacing them with enough Na+ ions to maintain the same number of positive charges in the s
Determine the change in internal energy of a system that absorbs .515kJ of heat from its surroundings and has .147 kcal of work done on it?
What are the major difference among the three- dimensional and two-dimensional models of methane and ethane? When might you choose to use a two-dimensional model rather than a three-dimensi
The depletition of O3 reacts with 0.670g NO, determines how many grams of NO2 will be formed? Explain which compound is the limiting reagent? Determine the number of moles of the e
Discuss why Iodine minus is a better nucleophile than the Fluorine minus in ethyl alcohol but Flourine minus is a better nucleophile than Iodine in the CH3CN
The absorbance of this solution at a wavelength of 366 nm was found to be 0.355. A student measures the visible absorption spectrum for a 1.50 x10-4 M solution of potassium dichromate in a 0.00
The initial and final burette readings were 3.06 and 9.41 mL, respectively. A student preparing dilute dye solutions placed a sample of 2.59E-5M stock dye solution in a 25.00 mL volumetric flask.
Calculate the precipitate produced by mixing an Al(No3)3 solution with a NaOH solution. Write down the net ionic equation for the reaction balance.
Calculate the percent water in the hydrated salt. Determine the percent by mass of water in copper (II) sulphate pentahydrate,CuSO4 . 5H2O? Explain what mass due to waters of crystallization is
NaCl is formed in the reaction of 90ml of 3 M NaOH solution with the 90ml of 3 M HCL solution. Determine the molarity of the NaCl solution formed .
Determine the wavelength in meters of the line in the spectrum of the hydrogen atom for the transition n=5 to n=1. Does this correspond to emission or absorption?
Coordination compound, Please discuss the application of coordination compound under medicine,agriculture,food,manufacturing company and petroleum industry
At a point downstream, the air flows through a 5.00 cm ID pipe at 60 degrees Celsius and 1.53 bar (gauge) when a stream of air enters a 7.50-cm ID pipe at a velocity of 60 m/s at27 degrees Celsius
Determine the numbers of minutes are needed for the 20% of a sample of cyclopropane to isomerize to the propene? At 700 K, the rate constant for the following reaction is 6.2 ´10-4min1
Determine the activation energy for the decomposition of O2 by the reverse reaction if the activation energy for the reaction O +O3 ®2O2 is 25 kJ/mol, and the enthalpy change is&nbs
A sample of an unknown acid which is having 2.20 g (empirical formula = C3H4O3) is dissolved in the 1.0 L of water. A titration needed the 25.0 mL of 0.500 M NaOH to react totally with all