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The solubility of KNO3 is 155g per 100g of water at 75C and 38.0g at 25C. What mass of KNO3 will crystallize out of the solution if exactly 100g of its saturated solution at 75C is cooled to 25C? Is there anyone that can provide a template to work from in order to solve this problem?
The heat of vaporization of water at 100°C is 40.66 kJ/mol. Calculate the quantity of heat that is absorbed/released when 9.00 g of steam condenses to liquid water at 100°C.
Describe an apparatus by which azeotrope formation can be used to drive the equilibrium toward the products, thus maximizing the yield.
Calculate the concentrations of the protoneated and unprotonated forms of bromothymol blue in 100 mL of a pH 8.1 buffer solution to which 1.0 mL of 0.005 M solution of bromothymol blue in 80% wate/20%ethanol has been added.
a group of students brought a six pack of beer to thebeach in fortlauderdale fl. the six pack is placed in a
A 8.90g sample of lead nitrate was heated in an open container to cause decomposition. Calculate the theoretical yield of PbO in grams.
compouds a and b are alcohols with the molecular formula c3h8o. the following informations was obtained from a mass
describe in detail the internal changes that occur within dental porcelain when firing porcelain jacket crowns and
A sample of oxygen gas occupies a volume of 555.0 mL at 822 torr and -45?. Calculate the temperature in ? if the gas has a volume of 2.53 L at 491mmHg.
A certain substance, intially present at 0.500 M, decomposes by second-order kinetics with a rate constant of 4.00 x 10-1 L/mol min. Calculate the time (in minutes) required for the system to reach a concentration of 0.370 M.
What is the pH of the benzoic acid solution prior to adding sodium benzoate? Express answer using 3 significant figures. 2. How many grams of sodium benzoate should be added to prepare the buffer?
Calculate the mass/mass percent concentration for each of the following solutions. 1.) 1.05g NaCl in 95.0g of solution 2.) 2.00g K2Cr2O7 in 103.0g of solution 3.) 50.0g C6H12O6 in 125.0g of solution
Which of the following electron transitions corresponds to emission of the longest wavelength light
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