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Why is this isolation so difficult? Please explain using the isoelectric point and the effect PH will have on the structure of your product. This question is from a multi-step synthesis lab in organic.
How much energy (in calories) is needed to heat 17cm^3 of fat from room temperature (25 C) to its melting point (35 C)?
A 64 g piece of ice at 0 degrees celsius is added to a sample of water at 9 degrees celsius. all of the ice melts and the temperature of the water decreases to 0 degrees celsius. How many grams of water were in the sample?
What substances are present after the reaction is over? How many grams of ammonia are formed? How many grams of the excess reagent remain after the reaction is complete?
A bottle containing 350 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 and 1.00 ] and that no heat is lost to the calorimeter itself, nor to the surroundings.
Give equations for the reaction of salicylic acid with the following: a) acetyl chloride/pyridine b) methanol/HCl/heat c) sodium bicarbonate, room temperature
A solution is .855% HNO3 by mass. Density of the solution is 1.01 g/mL. Find [H+], [OH-], and pH.
To determine the freezing points of distilled water, 1m glucose, 1m NaCl, 1m CaCl2. Use the freezing point of the pure water as a baseline to determine deltaTf for each of the solutions
What mass in grams of CO2 was evolved? The balanced equation I set up is: Na2CO3 + 2HClO4 --> NaClO4 + CO2 + H2O Now what? What was the molarity of the excess reactant (HCl or Na2CO3)?
A 0.456 gram sample of an unknown mono protic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Compute the pH of the solution before the addition of any HNO3. Kb of NH3 =1.8 × 10-5.
If 17.8 grams of KOH dissolve in enough water to make a 198-gram solution, what is the concentration in percent by mass.
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