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(a) If the molar solubility of BaCO3 at 25 oC is 5.08e-05 mol/L, what is the Ksp at this temperature?
(b) It is found that 6.25e-06 g of Cd3(PO4)2 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Cd3(PO4)2.
(c) The Ksp of Mg3(PO4)2 at 25 oC is 1.04e-24. What is the molar solubility of Mg3(PO4)2?
a fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. each barrel contains 42 gallons. if the oil film on the ocean is 2.5 x 10^2nm thick , how many square meters will the oil slick cover?
A 50.00-mL sample of .1000 M KOH is titrated with .287 M HNO3. Calculate the pH of the solution after 52.00 mL of HNO3 is added.
moles of an ideal gas at 300K are expanded isothermally from an initial P of 4 atm to a final P of 1 atm. Calculate q, w, DeltaU, DeltaH for the process.
Using Heisenberg's uncertainty principle, calculate the uncertainty in the position of the following. a proton moving at a speed of (4.54 +/- 0.02) x 10^4 m/s
Choose the answer which presents the chemical formulas for two substances in order of decreasing melting point (highest melting point first) and gives a valid reason for this order.
how many possible resonance structures can you draw for SO3 without violating the octet rule for S
equilibrium constant-the concentration of solute in the organic phase is in the numerator of the KD expression and the concentration of solute in the aqueous phase is in the denominator.
Write both an equation using Lewis structures and a balanced chemical equation for the following reactions. Silicon atoms and chlorine molecules.
A certain reaction has an activation energy of 54.0 kJ/mol. As the temperature is increased from 22 degrees C to a higher temperature, the rate constant increases by a factor of 7.00. Calculate the higher temperature
Hydrogen gas (a potential future fuel) can be formed by the reaction of methane with water according to the following equation: CH4(g)+H2O(g)?CO(g)+3H2(g) In a particular reaction, 26.0L of methane gas (measured at a pressure of 734torr and a temp..
assume that you have 1 2 5 and 10 ml pipets and a 25 ml volumetric flask. describe in detail how you would prepare a
A 0.22 g sample of a large biomolecule was dissolved in 30.0 mL of solution. The osmotic pressure of this solution was 32 mm Hg at 27 degrees celsius. What is the molar mass of the biomolecule
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