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- 5 L of 0.2 M dextrose solution from 5 M dextrose solution0.0050 M KOH PH VALUEBenzoic Acid Champi Sample Weight of sample 0.4997 g 0.4107 g Pressure in the container 3000 kPa 3000 kPa Measured heat of combustion 26.28 kJ/g or 6.281 kcal/g 11.74 kJ/g or 2.806 kcal/g 1. Calculate the calorific value of the sample in KJ, kcal and cal units.
- Sugar solution is being heated to 83 o C in a jacketed pan made from stainless steel, 1.6 mm thick. Heat is supplied by condensing steam at 200 kPa gauge in the jacket. Calculate the rate of heat transfer if the surface heat transfer coefficients for condensing steam and sugar solution are 12000 J/m2-s-oC and 3000 J/m2-s-oC, respectively. Thermal conductivity for the stainless steel is 21 J/m-s-oC and the surface area of the pan is 1.4 m 2 .10 mL of 0.5 M CuSO₄ * 5H₂O solution from 10 M CuSO₄ * 5H₂O solution50 mL of 15 mg/mL NaOH solution from 100 mg/mL NaOH
- 50 mL of 5mM NaCl solution from 1 M NaCl solutionCombustion of a fuel sample in a bomb calorimeter increases the temperature of the entire system by 5.10 °C if the calorimeter contains 1700 g of water, but only by 4.00 °C if the calorimeter contains 2200 g of water. What is the heat capacity of the dry bomb calorimeter assembly? Assume that the specific heat capacity of water is 4.18 J g–1 °C–1.Using the provided data on the activity part, what is the acquired R value? Is it acceptable or not? If not, what laboratory techniques should be improved? Concentration Absorbance 6 3.69267 8 3.69667 10 3.69667 12 3.701 14 3.708 16 3.70867
- Calculate the equilibrium constant (K'eg) for each of the three reactions at pH 7.0 and 25 °C, using the AGʻ° values given. (a) glucose 6-phosphatase glucose 6-phosphate + H,O glucose + P; AG'° = –13.8 kJ/mol K'eq= (b) B-galactosidase lactose + H,O glucose + galactose AG'O = -15.9 kJ/mol K'eq=The pressure of water vapor over ice is 3.88 mmHg at -20C and 4.58 mmHg at 0 C. Estimate in J/mol the heat of vaporization of ice at -10C.You just made a 1.5M permanganate solution. What concentration is your potassium permanganate solution in percent? "K: 39.10 g/mole" "Mn: 54.94 g/mole" "O: 16 g/mole" "MW of KMnO4 is 158.04 g/mole" O a. 0.24% Ob. 20.1% O c. 15.8% O d. 23.7% O e. 2%