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One gram of solid calcium sulfate, CaSO4(s), is added to 500 mL of pure water. Immediately, the solid begins to dissolve according to the following reaction:CaSO4(s) ? Ca2+ + SO42-
What is the concentration of dissolved sulfate in the water once equilibrium is achieved? If additional 10 grams is added, what would be the new equilibrium concentration of calcium sulfate?
How many moles of S8 are needed to make 0.600 moles of SF4? S8 + 8 Cl2 = 8 SCl2 ; 3 SCl2 + 4 NaF = SF4 + S2Cl2 + 4 NaCl
A certain metal crystallizes in a body-centered cubic arrangement. If it rearranges to a face-centered cubic structure, what will happen to the density of the metal
calculate the molar enthalpy change when mercury is cooled 10 k. the molar heat capacity of mercury is 27.8
Calculate the percent ionization of propionic acid (C2H5COOH) in solutions of each of the following concentrations
A 0.1276-g sample of monprotic acid (Molar Mass = 1.10x 10^2) was dissolved in a 25.0 mL of water and titrated with .0633 M NaOH after 10. mL of base had been added, the pH was determined to be 5.67. What is the Ka for the acid
The kidneys function to eliminate ammonia from the blood. Based on the pK value, what is the molecular form that predominates in the blood? Could this molecule easily diffuse through the ehydrophobic lipid membrane of a kidney cell? Explain.
You made a pH 10 buffer by combining 142 mL of 28% NH4OH with 17.5 g NH4Cl. What would have been the pH of the buffer if you had used twice the amount of NH4Cl
task 1acidity of carbonyl compoundsa find ka values for and order the following componds in order of acidity most
What type of signal(s) would you observe in the mass and/or infrared spectrum of the following compound? c6h12cho A) A signal at 1600 cm-1
Radio waves travel at the speed of light which is 3x10^8 m/s. how many kilometers will radio messages to outer space travel in one year
A 0.54 M solution of a compound in water has a density of 1.340 g/mL at 20°C. What is the molality of this solution. Assume that the mass of the solution is the mass of the solvent
H2S and H2O have simipar structures and their central atoms belong to the same group. Yet H2S is a gas at room temperature and H2O is a liquid. Use bonding principles to explain why.
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