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Consider a solution of 0.1M ZN2+ and 0.1M CU2+ that is saturated with H2S. The solubility product constants for XNS and CUS are 1.1x10^-21 and 6x10^-36, respectively. 1)How do you who that both ZnS and CuS will precipitate at pH8. 2) Show that only CuS will precipitate when (H3O+) = 0.3M
A particular reactant decomposes with a half-life of 145 s when its initial concentration is 0.310 M. The same reactant decomposes with a half-life
how many moles of CO2 are produced when 5.40 mol of ethane are burned in an excess of oxygen
Estimate the uncertainty in the position of one Nitrogen molecule (N2) traveling 300 +/- 0.2 (meters per second) Assume the mass of the nitrogen molecule is 4.65x10^-23 grams
A saturated solution of Mg(OH)2 is prepared and allowed to equilibriate at 25 degrees celcius. A 25.00 mL sample of the 25 degrees celcius solution is titrated with 0.00508M HCL solution. 1.38 mL of the HCL solution are required to fully react the..
What is the Total Ionic Equation for:2Al + 2KOH + 6H2O = 2KAl(OH)4 +3H2
When adding ethylene glycol to your cooling system, it is usually mixed 50:50 by volume. This will prepare a 52.7 mass % solution. Convert this concentration to molality and predict the freezing point depression
0.134 mole of KCl and 0.185 mole of CaCl2 were dissolved in water. calculate the total number of moles of Cl- ions in the solution.
A chemist wants to make 4.5L of a 0.340M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use?
Calculate the mass of material required if 1500 calories of energy causes a change from -27 degrees fahrenheit to 91 degrees celcius and the specific heat capacity is 0.25 joules/gram-degree C.
What is the molar concentration of a solution prepared by dissolving 0.6593 g of NaCl in a 100-mL volumetric flask
for 1st order problem, at 298k the rate is 3.8X10^-6M/s, and at 350k the rate is 4.2X10^-5 M/s. What is the half life at 360k?
A solution is made by mixing 500 mL of .121 M NaOH with 500 mL of .1 M CH3COOH. Calculate the equalibrium concentrations of H+. CH3COOH, CH3COO-, OH- and Na+
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