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In the procedure of plating metal with silver, the silver ions are healthier from the wastewater from the plating bath by precipitating out silver chloride, AgCl. Kso for AgCl is 1.8*10-10. Presuming complete dissolution of NaCl how much NaCl (in g) must be added per liter of waste water to ensure that the soluble silver concentration is less than or equal to 1 µg/L? Presume low pH, so ignore any complexion of silver with OH-.
When a solution containing equal moles of hemoglobin and myoglobin is bubbled with a small amount of O2: A. hemoglobin will dissociate into free dimers. B. hemoglobin will dissociate into free monomers.
During the course of an experiment, 10.0 mL of water is added to 25.0 mL of aqueous 0.120 M NaCl. What is the concentration of NaCl in the resulting solution
A glass bulb of volume 0.136 L contains 0.7031 g of a gas at 759 Torr and 99.5 degrees C. What is the molar mass of the gas
Draw a mechanism to demonstrate how pyridine catalyzes the hydrolysis of acetic anhydride to two molecule of acetic acid. Is this reaction reversible? why or why not?
potassium permanganate was used to determine the percentage of iron (Fe, At weight: 55.845? in an ore sample. the procedure included dissolving the iron wiht HCl and then converting all the iron in the ore to Fe2+ using several reagents.
Consider a solution that contains 81.0% R isomer and 19.0% S isomer. If the observed specific rotation of the mixture is -64.0°, what is the specific rotation of the pure R isomer
A 45.5 g sample of copper at 99.8 degrees C is dropped into a beaker containing 152 g of water at 18.5 degrees C. What is the final temperature when thermal equilibrium is reached?
Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal. Estimate the solubility of M(OH)2 in a solution buffered at pH = 7.0, 10.0, 14.0
Would MS help you with either of these problems? If yes, explain how. a) differentiating 1-pentyne from 2-pentyne
For each of the following processes, indicate whether the signs of S and H are expected to be positive, negative, or about zero.
Which anions generally do not form precipitates? What are the exceptions?
If a gaseous compound has a percentage composition of 82.4%nitrogen and 17% hydrogen. Explain what is the empirical formula of the gas
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