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Consider a scuba tank (12.0 L volume) initially at 1.00 atm that is subsequently filled to 200atm with oxygen (average M ~ 32.00 g/mol, Cp! = 29.355 j.mol^-1k^-1) behaving as an ideal gas. Assuming the tank is sitting in water at 298 K at an external pressure of 1.00 atm, filling the tank can be considered an isothermal and reversible process. (a) Calculate the molar change in the internal energy and enthalpy of the gas inside and outside the tank.Also, calculate the amount of work required to fill the tank and the amount of heat transferred to the surrounding water. (b) What is the mass of gas present in the tank once it is filled? (c) Assuming the tank is surrounded by 1.00 m3 of water and using the heat capacity and density (293 K value) for water found in the back of your textbook, calculate the temperature change of the water (Qp = CpΔT)
Calculate the mass in grams of hydrogen chloride produced when 4.5 L of molecular hydrogen measured at STP react with an excess of molecular chlorine gas.
A buffer solution is prepared by mixing 20.0 mL of 0.032 M benzoic acid C6H5COOH(aq) solution with 25.0 mL of 0.022 M NaC6H5COO(aq). What is the pH of the buffer produced? (Ka of benzoic acid = 6.2 x10-5).
Given the reaction: Ca + 2H2O -> CA(OH)2 +H2 What is the total number of moles of Ca needed to react completely with 4.0 moles of H2O?
Constructs a galvanic cell that has a strip of iron metal immersed in a solution of 0.1M Fe(NO3)2 as one half-cell and a strip of zinc metal immersed in a solution of 1.0M Zn(NO3)2 as the other half-cell.
A 29.0-g sample of water at 260. K is mixed with 48.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Of the various properties of a "good" recrystallizing solvent why is it good to have a relatively volatile solvent, boiling point greater than or less than 100 degreesC
Using given data, calculate the change in Gibbs free energy for each of the following reactions. In each case indicate whether the reaction is spontaneous at 298 K
A mixture of ammonia and oxygen is prepared by combining 0.290 L of NH3 (measured at 0.730 atm and 26°C) with 0.190 L of O2 (measured at 0.750 atm and 54°C). How many milliliters of N2 (measured at 0.740 atm and 100. °C) could be formed if the fol..
A gas filled balloon with a volume of 12.5 L at 0.90 atm and 294 K is allowed to rise to the stratosphere where the temperature is 268 K and the pressure is 1.0 millibar. What is the final volume of the balloon. (1.0 atm = 1.013 bar).
bone was dissolved in hcl giving 53.0 ml of solution that contains calcium chloride potassium oxalate was added to
Zinc, copper, lead, and mercury ions are toxic to Atlantic salmon at concentrations of 6.42 x 10^(-2)mM, 7.16 x10^(-3)mM, 0.965 mM, and 5.00 x 10^(-2)mM, respectively. What are the corresponding concentrations in milligrams per liter
Using the volume of solvent calculated in question 1, calculate how much sulfanilamide will remain dissolved in the mother liquor after the mixture is cooled to 0 Degree C. Solubility of sulfanilamide at 0 degree C is 14mg/ml in 95% ethanol.
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