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A)A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L?1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass of Mg(OH)2 in the original sample? [Hint: When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride salt, water and CO2(g). Assume that all of the CO2(g) leaves the solution without reacting.]
How many grams of copper are in the necklace? 3. If 18-karat gold has a density of 15.5 , what is the volume in cubic centimeters?
A gaseous mixture containing 0.220 mol fraction of carbon tetrachloride (CCl4) and 0.780 mol fraction of dry air is initially at 60.0°C and 1127 mmHg.
Draw the LUMO Huckel MO for the cation 1, 3, 5-heptatriene (carbocation is carbon 7). Also, please state the number of pi electrons in this conjugate system
Indicate the reaction conditions you would employ to accomplish the following: Conversion of tert-butyl chloride to 2-methylpropene to maximize the yield of the elimination product over the substitution product.
The sulfuric acid in a car battery has a density of 1.225 g/cm3 and is 3.75 M. What is the molality, mole fraction, and percentage of sulfuric acid by mass in this solution?
Will the parietal pressure of SO3 increase, decrease, or remain the same? Be sure to support your answer with CLEAR calculation.
What chemical test can I do to distinguish between succinic acid and napthoic acid? Succinic acid is a dicarboxylic acid where as napthoic
Design an experiment to determine the density of irregular shaped object. a. Include an introduction describing the calculations that will need to be made.
Benzoic acid has a Ka value of 6.3x10^-5. A 35 ml sample of .13 M benzoic acid is titrated with a .15M solution of NaOH.Find the pH.
The heat of vaporization of CCl2F2 is 289 J/g. What mass of this substance must evaporate to freeze 165 g of water initially at 15°C? (The heat of fusion of water is 334 J/g; the specific heat of water is 4.18 J/g-K.)
if 525 g of NaOH are dissolved to a final total of 50.0L what is the molarity of the solution
What is the pH of a soft drink in which the major buffer ingredients are 6.5 g of NaH2PO4 and 8.5 g of Na2HPO4 per 355 mL of solution?
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