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A saturated solution of magnesium fluoride was prepared by dissolving solid MgF2 in water. The concentration of Mg2+ ion in the solution was found to be 1.18 *10^-3 M. Calculate Ksp for MgF2. Express your answer numerically.
what is the energy in joules of a mole of photons with visible light of wavelength 486nm.
when lead metal pb is added to a 0.300 m solution of cr3 at room temperature an oxidationreduction equilibrium is
The highly reactive OH radical (a species with an unpaired electron) is believed to be involved in some atmospheric processes. The bond enthalpy for the oxygen-to-hydrogen bond in OH as 460 kJ/mol. What is the longest wavelength (in nm) of radiati..
Calculate the equilibrium concentration of Zn2+(aq) in a solution that is 0.0125 M Zn(NO3)2 and 0.600
a piece of als at 94degc is placed in 65g of h2o at 28degc. the aluminum cools and after equilibrium the final
Calculate the molar concentration of a solution prepared by dissolving 2.34 g of sodium sulfate (MW = 142) in enough waterto make 250 ml of solution.
How many grams of sucrose, C12H22O11, must be dissolved in 750. mL of water to prepare a 0.250 molal solution?
a 45.0 g aluminum block initally at 28.0 celsius absorbs 825 joules of heat. what is the final temperature of the
Sodium thisulfate, Na2S2O3, is used as a fixer when developing photographic film. What is the mass in grams of Na2S2O3 needed to make 100ml of a 0.25 solution?
for 2 so2g o2g reverse reaction arrow 2 so3g kp 3.0 104 at 700 k. in a 2.00-l vessel the equilibrium mixture contains
Which solution will have the larger change in its freezing point: a 0.75 molal solution with water as the solvent or a 0.75 molal solution with naphthalene as the solvent. Calculate delta T for water and delta T napthalene
What are the protons and neutrons that are emitted from a helium atom called? Atomic mass is expressed in atm.
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