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The FDA recommends that women who are pregnant avoid eating more than three 6.00-oz servings of bluefish per month because of the relatively high mercury levels in that type of fish. If bluefish contains 0.301 ppm of mercury (that is, 0.301 oz of mercury per 1×106 oz of fish) how many ounces of mercury would a pregnant woman consume in a month if she ate the maximum recommended amount of bluefish?
A student is given four solid samples labeled W, X, Y, and Z. All have a metallic luster. She is told that the solids could be gold, lead sulfide, mica (which is quartz or SiO2), and iodine.
preparing semicarbazone derivatives, what is the purpose of adding sodium acetate to semicarbazide hydrochloride?
A 0.264-gram sample of an amino acid was dissolved in 95.0mL of water and titrated with 0.105M NaOH. The first equivalence point was found at V(OH)=16.3mL.
A bowl of 464 g of water is placed in a microwave oven that puts out 776 watts (J/s). How long would it take in seconds to increase the temperature of the water from 12.0oC to 46.0oC? Use SF.
If, when you are extracting an aqueous solution with an organic solvent, you are uncertain as to which layer in the separatory funnel is aqueous, how could you quickly settle the issue?
what are the expected impurities in acetophenetidin synthesis?
How much of the drug substance has to be used (calculate)? B) How much NaCl do you need to add to hace an isotonic preparation?
a solution is prepared by adding enough water to 387 g of CsCl to form 1 liter of solution. What is the mass of the solution? the density of the solution is 1.384 g/mL.
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 9.30 MJ of energy (in the form of heat) if the temperature of the sodium
Determine what is the coordination of the cations in the case of a normal spinel and what point defects are possible in the spinel structure?
calculate the molecular mass of the nonionic solutes. 8.02 grams of solute in 8.61 grams of water lower the freezing point to -0.430 degress celcius.
Evaluate reversibility of a process where an ideal monoatomic gas is first slowly compressed 10-fold by a gradually increasing external pressure (gas remains in thermal equilibrium with the surroundings)
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