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Enough Al2(SO4)3 solid is added to water to prepare 100.0 mL of a 0.150 M solution of aluminum sulfate. What is the concentration of sulfate ion in solution?
The equilibrium concentration of I2 is 0.05M. What is the equilibrium constant Kc for the reaction at this temperture? Express answer in K
Determine compound having greater Ksp or compound having smaller Ksp ? compute [Ag + ] when CuI just start to precipitate. What % of Ag + remains in solution at this point?
A student mixed 75.0 mL of water containing 0.75 mol HCl at 25 degrees C with 75.0 mL of water containing 0.75mo of NaOH at 25 degrees in a foam up calorimeter. The temperature of the resulting solution increased to 35 degrees C.
A 1.00 g sample of D2O and H2O are reacted with CL2 and HCL and DCL are produced. Then they are diluted with H2O giving a volume of 1.00L. Then 25 mL of the solution are reacted with excess AgNO3 and 0.3800g AgCl precipitate formed.
At 295 K, Keq = 7.0 x 10-2 for the following equilibrium: NH4HS(s) ? NH3(g) + H2S(g) What is the equilibrium partial pressure (in atm) of H2S.
10 grams of potassium chlorate (KClO3) is heated and decomposed, what mass of oxygen gas will be formed?
A solution of 62.4 g of insulin in enough water to make 1.000 L of solution has an osmotic pressure of 0.305 atm at 25°C. Based on these data, what is the molar mass of insulin?
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 7.60x10^2 cal of work done on it
A solution containing Pt4+ is electrolyzed with a current of 4.20 A. How long will it take to plate out 65% of the platinum in 0.50 L of a 0.010 M solution of Pt4+
Suppose that 24 g of each of the following substances is initially at 25.0^circ C. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
The heat of formation of Al2O3(s) is -1669 kJ/mol. Calculate the heat evolved when .267 g of Al burns in oxygen.
Calculate the mass of propylene glycolC3H8O2 that must be added to 0.320kg of water to reduce the vapor pressure by 2.88torr at 40C Pressure H2O 40C 55.3torr
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