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An 1 L aqueous solution contains 28.5 g of Fe(NO3)3, and 46.5 g CaCl2 and 17.6 g of Ca(HCO3)2. a) What ions will you find in solution ? b) (4 point) You want to separate the calcium from iron by addition of Na3PO4. The Ksp for Ca3(PO4)2 (s) is 1.3x10-32 and that for FePO4(s) is 1.0 x 10-22. Identify the precipitate that forms first. c) Is the separation successful?
ethylene glycol c2h6o2 is widely used as an automotive antifreeze. what is the minimum weight in grams of this compound
What is the difference (in pH units) between the initial pH of a 0.20 M NH3 / 0.20 M NH4Cl buffer to the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 65.0 mL of the buffer
1.how doesthe density ofa gasdepend on temperature?pressure? how doesit depend on the molar massof the gas?2.what is
A 2.5 L helium balloon is filled at a florist's shop. If the temperature inside the shop is 68°F, what volume will the helium occupy after being left in an automobile at 5°F in the parking lot for the day
a weather ballon filled with helium has a volume of 1.0*10^-4L at 1.00 atm and 30.0C. it ascends to an altitude at which the pressure is only 0.60 atm and the temperature is -20.0C. what is the volume of the ballon at the higher altituda.
if 1.0 mol of electrons flows through the cell, how many grams increase or decrease in mass will the silver electrode undergo
Compound E was heated with bromine and aqueous sodium hydroxide to give compound F (C7H9N). Compound F was treated with cold sodium nitrite and an excess of hydrochloric acid a colorless gas was evolved, and when the resulting liquid reaction mixt..
the temperature of the surrounding remains essentially constant during the process. Calculate deltaSsystem, deltaSsurroundings and deltaStotal.
Calculate the heat of formation of propane given the heat of formation of H2O (liquid) is -285.3 kJ/mol and the heat of formation of CO2 is -393.5 kJ/mol.
Molecular compound Y2(g), has a bond energy of 750 kJ/mol, and the molecular compound XY(g) has a bond energy of 1500 kJ/mol. Using bond-energy information, calculate ?H for the following reaction:
What is the FORMULA for the limiting reagent? c.What amount of the excess reagent remains after the reaction is complete? IN GRAMS
Calculate the percent ionization of 0.00340 M hydrocyanic acid (Ka = 4.9e-10). % ionization = % (b) Calculate the percent ionization of 0.00340 M hydrocyanic acid in a solution containing 0.0220 M sodium cyanide. % ionization = %
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