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A solution is made by dissolving 6.10 g of K2SO4 in 700 mL of water. The freezing point of this solution is -0.24 °C. What is the van't Hoff factor for K2SO4 at this concentration?
for the titration of 50.0 ml of 0.020 m aqueous salicylic acid with 0.020 m kohaq calculate the ph after the addition
Calculate the work done (in Joules) when 1 mole of ideal gas at 2 bar pressure and 300 K is expanded isothermally to a pressure of 1.5 bar, with the external pressure held constant at 1.5 bar.
The concentration of SO42- (aq) in a sample of river water can be determined using a precipitation titration in which a salt of Ba+ (aq) is the standard solution and BaSO4 (s) is the precipitate formed. What is the concentration of SO42- (aq) in a..
An empty 5.00- flask is charged with 0.450g of pure H2S(g) , at 25 degrees celsius What is the initial pressure of H2S(g) in the flask
Calculate a lattice energy for (in kilojoules per mole) using the following information.
A compound contains 43.64% P with the remainder being oxygen. What is the empirical formula of the compound?
Calculate the concentration of I- in a solution obtained by shaking 0.20M KI with an excess of AgCl. the answer is not 9.23*10^-9
Identify the acid and base on the left side of the following equations and identify their conjugate species on the right side
The volume of a gas sample is 650. mL at STP. What volume will the sample occupy at 25.0°C and 950. torr pressure.
0.40 moles of a diprotic acid h2a is dissolved in 250 ml of water. the ka1 of this acid is 1.0 x 10e-5 and ka2 is 1.0 x
If a system has 225 kcal of work done to it, and releases 5.00 x 10^2 kJ of heat into its surroundings, what is the change in internal energy of the system
Solid sodium chlorate is heated to form solid sodium chloride and oxygen gas; c) Butane gas (C4H10) react with oxgen gas to form two gaseous products, carbon dioxide and water.
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