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What is the molality of a solution that is composed of 265 g of acetone ((CH3)2CO) dissolved in 177 g of water?
Potassium chloride is used in the kitchen as a salt substitute (in place of sodium chloride). Suppose you were planning to make ice cream but discovered too late that you were out of table salt for making the ice bath.
Determine how many moles of each Na+ and Cl- are in 1.00L of the saline solution?
What is ozone and how it works as a protective molecule for our environment? What are the effects of CFCs on the ozone layer.
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
A certain first order reaction has a rate constant of 0.0215 s-1 at 24 degrees C. What is the value of rate constant at 70 degrees C if Ea=90.0 kJ/mol.
A snack pack of potato chips holds 28 grams of chips. Based on your data, how much fat is present in a snack pack? In such a bag of chips, there are about 15 grams of carbohydrate and about 1 gram of protein.
Determine how many milligrams of H 2 O are present in sample If the freezing point of 100.0 grams of sample of 2-methyl-2-propanol =24.59C, (2methyl-2propanol has Kf=4.68Ckg/mol
Designing and preparing aqueous buffer solution with the pH indicated.
What is the order of the reaction if it takes 10 minutes, 20 minutes, 30 minutes to reach 75% conversion?
Determine the molarity of a solution formed by dissolving 15.79 grams of CaCl 2 , calcium chloride in 200.grams of H 2 O, water?
Using a solution of (HOC 2 H 2 )3NHCl, solution in which Kb, ((HOC 2 H 2 )3N) = 5.9 × 10 -7 then determine what is the pH of a 0.010 M triethanolammonium chloride,
A cubic meter of a gravel-and-sand aquifer has been contaminated with 20 L of tetrachloroethylene. If the amount of tetrachloroethylene dissolved in aquifer water is 20 percent of its aqueous solubility,
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