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A 20.753 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 74.741 g of water. A 11.441 g aliquot of this solution is then titrated with 0.1094 M HCl. It required 29.22 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.
Draw the crossed aldol condensation product formed between benzaldehyde and acetone
A substance has a molar extinction coefficient of 2.4x104cm-1M-1 and an absorbance of 0.10 What is the concentration of this substance in a cuvette with a 1.0 cm path length.
How much heat (in {rm kJ}) is evolved in converting 1.00 mol of steam at 140.0 C to ice at -55.C? The heat capacity of steam is 2.01J/g* C and of ice is 2.09 j/g* C.
What is the exact alkalinity of a water that contains 0.6580 mg/L of bicarbonate, as the ion, at a pH of 5.66? No carbonate is present.
Predict the precipitate that forms when aqueous solutions of silver nitrate and potassium chloride react to form products in a double-replacement reaction. Include a discussion of how to write the complete chemical equation describing this reactio..
Draw one specific example each of a beta-diketo compound and one example of an alpha
Consider three different compounds of the hypothetical element X using the table of bond lenghts as a reference, rank the three compounds shown below in order of increasing
Lead(II) sulfide reacts with hydrogen peroxide to form lead(II) sulfate and water. How many grams of hydrogen peroxide are needed to react completely with 265 g of lead(II) sulfide?
What is the limiting reagent? Show the reasoning b) Calculate the theoretical yield in milliliters of the butene produced at 740 mm and 25 C when it is collected over water.R=0.0821
Copper(II) iodate precipitates from iodate solution. The formula of the precipitate is CU(IO3)2. A saturated solution of this substance was made in 0.01 M KIO3.
When the two substances reach thermal equilibrium, the final temperature is 24.2 degrees celcius. What is the mass of the copper block?
If a 220mg piece of gold (density =19.32 ) is hammered into a sheet measuring 2.11.0 , what is the average thickness of the sheet in meters.
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