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A) A saturated solution of lead(II) fluoride, PbF2 , was prepared by dissolving solid PbF2 in water. The concentration of Pb2+ ion in the solution was found to be 2.08 x 10-3 M . Calculate Ksp for PbF2 .
B) The value of Ksp for silver sulfide, Ag2S , is 8.0x10^-51 . Calculate the solubility of Ag2S in grams per liter. If you could, can you tell me how u did them?
How many moles of magnesium and moles of chlorine ions are present in 123.4 mL of a .345 M solution of magnesium chloride
Describe the type of bonding that your unknown has (covalent, polar covalent). Locate and show any dipoles in your compound
How many moles of gas are in a balloon with a volume of 2.14 liters at a temperature of 298 K and a pressure of 1.11 atm?
the iron oxide reacts to form water vapor and Fe(s) but the aluminum oxide remains unreacted. if the residue following heating weighs 1.596g, determine the weight percent of iron oxide in the original mixture.
Find the temperature capable of expanding 2.500 liters of chlorine at 18.00°C and 0.9000 atm to 5.200 liters. No change in pressure took place.
A solution containing 29.85 mg of an unknown protein per 25.5 mL solution was found to have an osmotic pressure of 3.85 torr at 21C
Celsius and heated to the temperature of 275 degree Celsius at a constant pressure of 0.975 atm. compute the work done?
A helium gas cylinder at 25 Celcius is used to fill balloons and has a total volume of 43.8 L and a pressure of 1.51 x 10^4 kPa. how many moles of helium are in the tank
what adjustment should be made to the mobile phase to bring the compound off sooner? why?
a solution is made by mixing 20.0 mL 0.4 M NaCH3COO with 30.0 mL 0.4 M CH3COOH, calculate the pH? For acetic acid, Ka = 1.76 x 10-5.
Identify the charged groups in the peptide shown below at pH=1 and at pH=7. What is the net charge of this peptide at these two pH values? val-met-ser-Ile-phe-arg-cys-tyr-leu
Which one of these is liquid bromine, fluorine gas, or oxygen gas?
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