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If 143 grams of water having an initial tempurature of 25.7 C are cooled by removing 4.27 kJ of heat from it, what is the final tempurature?
What is the solubility of Pb3(PO4)2 in a 0.025 M Na3PO4 solution? The solubility product for Pb3(PO4)2 is 1.0 x 10^-54.
A. Vinegar which is just a dilute acetic solution, is very common and versatile. The concentration of store-bought vinegar around a 5% solution by mass and is density is approximately 1.01 G/ml
Determine the actual molar and mass air/fuel ratios.- The percent deficit air used.- The volumetric percentage of water vapor in the exhaust gas before it was dried for this analysis.
60.0mL of .100M sodium carbonate solution is added to 40.0mL of .300M sodium chlorate solution. Compute the concentration of sodium ion in the final solution.
What is the final concentration of a BSA solution made from 400 uL of stock BSA solution (initial concentration 500 mg/mL) diluted with 1600 uL of water
The Haber process is an important reaction for the fixation of nitrogen, nitrogen is converted into ammonia, an important component in the production fertilizers. N2(g) + 3H2 = 2NH3(g) + 22,000cal
Calculate the concentrations of all ions in the solution after reaction. Check your concentrations to make sure that the solution is electrically neutral
The acid dissociation constants of sulfurous acid ( H2SO3) are K a1= 1.7 x10^-2 and K a2= 6.4 x10^-8 at 25.0 degrees C. Calculate the pH of a 0.163 M aqueous solution of solution of sulfurous acid.
A 0.85g sample of commercial lye (containing NaOH and other inert ingredients) is dissolved in water and titrated with 37.00ml of 0.525 M HCl. What is the percent purity (mass of NaOH/mass of sample x 100) of the lye sample
Cattell was interested in discovering the fundamental structure of personality. He utilized a statistical procedure named factor analysis.
The largest of the Great Lakes is Lake Superior, which as a volume of 12,230 km3. What is this volume in liters
Calculate the mass of urea that should be dissolved in 187 g of water at 35C to produce a solution with vapor pressure of 37.7 mmHg
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