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The common pain relievers asprin (C9H8O4), acetaminophen (C8H9NO2) and naproxen sodium (C14H13O3Na) are all available in tablets containing 200.0 mg of the active ingredient. Which compound contains the greatest number of molecules per tablet? How many molecules of the active ingredient are present in each tablet?
What are the coefficients of the reactants and products in the balanced equation above? Remember to include H2O(l) and H+(aqu) in the appropriate blanks.
What is the molar mass of toluene if 0.85 g of toleune depresses the freezing point of 100 g of benzene by 0.47 degrees C. Kf of benzene is 5.12 degrees C/m.
Magnesium phosphate precipitates from an aqueous solution. Does the entropy of the system increase or decrease
What is this hardness concentration expressed in ppm CaCO3. THe hardness of a water sample is known to be 500 ppm CaCO3. IN an analysis of a 50 mL water sample, what volume of 0.0100 M Na2H2Y is needed to reach the endpoint
Evaluate the number-average molar mass Mn of the polyamide, and also estimate its weight-average molar mass Mw by assuming that it has the most probable distribution of molar mass.
How many minutes would a solution of Cd2+ have to be electrolyzed with a 2.420 A current to plate out 1.77 g of Cd? min
A solution was prepared by dissolving 0.450 g MgSO4 (FW=120.363g/mol) in 0.500L of water. A 50.0 mL aliquot of this solution consumed 37.60 mL of EDTA solution in a titration. How many milligrams of CaCO3 (FW=100.089g/mol) will react with 1.00 mL ..
the system acd is hinged at a and d and supported by a cable which passes through a ring at b and is attached to hooks
When an aqueous solution that is 1M each in HCl, ZnCl2, and CoBr2 is electrolyzed, the elemental products formed initially at the cathode and anode are, respectively
Concentrated HNO3 has a density of 1.40 g/mL and is 65% by mass HNO3 (the rest of the mass is water). How many mL of this concentrated solution do you need to add to a 250 mL volumetric flask to create a 0.050 M HNO3 solution
what is the ionic equation of the following formulas nacl cacl2 alcl3 hcl koh h2c2o4 k2c2o4 ch3cooh h2o distilled h2o
Which of the following mixtures will be a buffer when dissolved in 1 liter of water?
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