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A) 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?
C) If you instead of NaCl wanted to use potassium nitrate to make the solution isotonic, how much potassium nitrate would you add?
D) How much water do you need to dissolve the, in question A, calculated mass of drug substance to make the solution isotonic?
E) What volume of an isotonic buffer-solution do you need to add to the drug solution to make the finished drug/product?
What combination of properties is responsible for the selection of trinitrotoluene as a military explosive?
The amount of boiling water required to raise the temperature of 25 kg of water in the bath to body temperature is 4.8 kg. In this process, the heat lost by the boiling water is equal to the heat gained by the room-temperature water.
What is the final temperature in a squeezed cold pack that contains 41.0 g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/g*C for the solution, an initial temperature of 26.5C.
The density of benzene at 25.0 degrees C is 0.879g/cm3. What is the volume in liters of 2.5 kg benzene?
The normal respiratory rate for a human being is 25.0 breaths per minute. The average volume of air for each breath is 505 cm3 at 20.0 degrees Celsius and 9.95 times ten to the fourth Pa.
Acetylene gas (C2Hs) is produced as a result of the reaction CaC2(S)+2H2O(l)-> C2H2(g)+Ca(OH)2(aq).
At 123?C, the pressure of a sample of nitrogen is 1.45 atm. What will the pressure be at 267?C, assuming constant volume?
Draw the most stable form of the major mixed Claisen product formed in the reaction.
Write the net ionic equation for the following reactions: a. The precipitation of manganese (II) hydroxide b. The reaction that occurs when sodium fluoride is added to a solution containing iron
how much potassium chlorate in needed to produce 20.0mL of oxygen gas at 670mm Hg and 20 degrees celcius?
What is the correct order of the following inert electrolytes in their ability to increase the degree of dissociation of acetic acid?
concentrated hydrofluoric acid is 28.9M and has a density of 1.18g/mL. What is the weight percent of concentrated HF?
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