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You are given 2.51 g of salicylic acid (MM = 138.118 g/mol). Using the procedure in the lab manual for the synthesis of aspirin (MM = 180.154 g/mol), you recover 1.34 of aspirin. Calculate your percent yield of aspirin.
A vertical force of 7 N (in the negative z direction) is required to hold the deflector in place. Determine the mass (kg) of the deflector. Assume the velocity of the water remains constant.
Calculate the [H3O+] concentration in 0.45 M solution of barbituric acid, HC4H3N2O3. Ka for barbituric acid is 1.0 X10 ^-5.
If 200ml of 2.00M HCL solution is added to 400ml of 1.00M NaOH solution What molarity will the resulting solution NaCl have?
what is the volume in milliliters of 20.0 g of acetone if the density of acetone is .791 g/ml?
A soluation of HO-CH2-CH2-OH is prepared by dissolving 651g of ethylene gylcol in 1.50kg of water. Determine the freezing point of the soluaiton and the vapor pressure of water above the solution 25.0 degrees C.
If you wanted to prepare a solution of CO in water at 25 degrees celsius in which the CO concentration was 2.2 mM, what pressure of CO
Identify the two important classes of catalysts. Choose a catalyst that exists in the human body. Explain its importance and how it works.
Nicotine is responsible for the addictive properties of tobacco. Assume Kb1= 1.05 x 10^-6 and Kb2= 1.32 x 10^-11. Determine the pH of a 0.00120 M solution of nicotine.
Draw four different Lewis electron-dot formulas for the SeO2 molecule. (HINT: One should have two single bonds, two have a single and a double bond, and one two double bonds).
The reaction vessel feels cooler. b.The value of K becomes smaller. c.The equilibrium will shift to the left. d.The reaction vessel feels warmer.
How many grams of patassium chlorate decompose to potassium chloride and 524 mL of O_2 at 128C and 752 torr?
Construct a reaction table for the process, and use it to calculate Kc at this temperature.
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