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A 1.37 gram antacid tablet is added to 25.00 mL of 0.4500 M HCl. After the resulting reaction was complete, back titration required 10.40 mL of 0.1212 M NaOH. Assuming that the tablet contained only calcium carbonate and an inert binder calculate the mass of calcium carbonate and mass percent of calcium carbonate.
What molarity of aqueous aluminum sulfate solution can be expected to show the same conductivity as 0.015 M Na2SO4 at 18,000 units?
A key oxidative step(s) in the B-oxidation cycle of fatty acids includes: a. addition of water to a double bond b. generation of a double bond from two adjacent -CH2 carbons
A synthetic organic chemist wants to make 100.0 grams of benzoyl chloride C7H5OCl from benzoic acid C7H6O2 in the following reaction.
What is the pH of a 0.16M solution of a lactic acid. HC3H5O3
What difference in their structural properties renders the triethylene glycol the only one that will work?
A hydrated form of copper sulfate (CuSO4·x H2O) is heated to drive off all the water. If we start with 9.47 g of hydrated salt and have 5.29 g of anhydrous CuSO4
discuss how the shielding by core electrons is analogous to putting a frosted-glass lampshade between the lightbulb and your eyes.
If 157 of wet is collected over water at 24 degrees C and a barometric pressure of 737 Torr , how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 Torr)
cyclohexane-toluene mixture, and then obtain IR spectra for each fraction. How would the IR spectrum of the first 1 mL fraction look different from that of the last 1 mL fraction?
The half life of Iodine-131 is 8.0252 days. If 14.2 grams of I-131 is released in Japan and takes 31.8 days to travel across the Pacific
What are the principal natural sources of hydrogen? What are the principal methods for the commercial preparation of hydrogen?
Calculate the diameter of a methane molecule with a van der waals value of .069L/mol for the excluded volume b. I got the answer to be 3.01A and was just wondering if I was right or wrong
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