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A) What is the pH of a solution made by adding 6.21 grams of sodium fluroide, NaF, to 391 mL of 0.317 M hydrofluoric acid, HF? (Assume no change in volume takes place.)
B) What is the pH of the solution in (a) after adding 49.0 mL of 0.100 M NaOH?
A solution of ammonia and water contains 2.10×1025 water molecules and 5.30×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
Determine the mass, of: a.30.0 mL of the liquid propylene glycol, a moisturizing agent for foods,
If the solution has the same density and specific heat as water, what is ?H for this reaction (per mole of H2O produced)? Assume that the total volume is the sum of the individual volumes.
The average molecular weight of the protein by gel permeation is 525000 g mass/g mol. Calculate the mole fraction of each component in solution.
Three sparingly soluble salts, MA, MA2, and MA3, all have Ksp = 1.5 x 10-7. Determine which of these three has the highest molar solubility in water? a) MA, b) MA2, c) MA3 ,d) They are all equally insoluble.
In an acidic solution (with an excess of iodate), the titration of a 25 mL sample of potassium iodide required 26.51 mL of 0.0949M sodium thiosulfate titrant.
What is the complete mechanism for the synthesis of triphenylmethanol from phenyl magnesium bromide
Draw the structures for and name and classify as primary, secondary, or tertiary all the isomeric amines
A rock contain 3.2 grams of a radioactive isotope, uranium-235, . Determine what was the original amount of uranium-235 in the rock If the rock has undergone 2.75 half lives, and how old is the rock?
You will then make a Kool-Aid solution by dissolving the powder in an entire packet of lemon-lime Kool-Aid in 250.00 mL solution. You find the powder in a packet of lemon-lime Kool-Aid has a mass of 3.629 g.
if you have 370 ml of water at 25 degrees Celcius and 130mL of water at 95 degrees C. what is the final temperatue of the mixture?
Assuming that the drug components whose spots you identified dissolved completely when you stirred the tablet with 1:1 ethanol/dichloromethane, what was the solid that remained behind?
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