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A female patient requires 2.70×10-2 grams of a sulfa drug then determines how many tablets should be given to her if there are five tablets in stock.
A rectangular block of plastic floats in the middle of the Pacific Ocean , measuring 1.79 cm by 1.73 cm by 2.29 cm,. The volume of sea water displaced by the plastic block = 4.80 cm3. Supposing the density of the sea water = 1.025 g/mL, determine the density of the plastic?
What is the order of the reaction with respect to sucrose and the value of the rate constant k
A 6.50 gram sample of an ore containing chromium is dissovled and then treated with an excess of Na3PO4 (aq), which precipitates out all of the chromium in the ore as chromium (III) phospate, CrPO4.
why are the rates of diffusion of carbon monoxide and nitrogen gas are virtually identical at the same temperature?
What volume of hydrogen gas is produced when 0.829 mol of iron reacts completely according to the following reaction at 0oC and 1 atm?
Which salt is most soluble in water? chromium (III) nitrate, silver iodide, barium phosphate, or calcium carbonate.
104. a 50.0 ml sample of 2.0 times 10-4 m cuno3 is added to 50.0 ml of 4.0 m nacn. the formation constant of the
Experiment you measured teh effect of changing temperature on the pressure of a conatined gas at constant volume.
calculate the pH of the 1 L solution of 0.25 M TRIS plus the addition of 0.05 M HCL. Show how many moles of TRIS and TRIS HCL are present after the addition of the HCL. Use the Henderson Hasselbalch equation to calculate the pH?
Suppose we want a soln containing 150 micrograms of the protein at a concentration of .5 mg/ml. To do this we will first evaporate the liquid from enough of the protein soln to get 150 micrograms. How much coln do we need to start with? How much H..
If the titrant has a molarity of 0.2500 M and there are 45.00 mL of analyte present, what is the molarity of the analyte?
When relatively small amounts of magnesium burns, the fires are extinguished using commercially available dry powder. Why might this fire rekindle days later as someone tries to remove the residue with water?
Draw the structure of the aromatic organic product formed from the reaction of the following compound with
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