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When a 2.00-g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity of 1.083 kJ·K-1, the temperature decreases by 0.460 K. Calculate the molar heat of solution of KSCN.
The solubility product of Mg(OH)2 is 1.2E-11. What minimum OH- concentration must be attained (for example, by adding NaOH) to decrease the Mg2+ concentration in a solution of Mg(NO3)2 to less than 1.9E-10 M?
Determine How many moles of Fe 3 O 4 could be formed if 9.00 mol iron react with 12.00 mol Oxygen and determine How many grams of methane is required to form 45.5g CHcl 3 ?
Compute mole fraction of caffeine(C 8 H 10 N 4 O 2 ), the molarity of the solution
A peat soil was found to have the following Langmuir constants for the adsorption of heavy metals. Using the nonlinear Langmuir equation above, show the equations and plot the nonlinear adsorption isotherms for the three metals
Compute the change in entropy of the universe if water vapor of one mol condenses to liquid water at the temperature of 100°C in a thin flask in an ambient laboratory temperature of twenty five degree celsius.
What is the theoretical yield of SO 3 produced by the quantities described in Part A and How many Oxygen molecules are required to react with 7.82g of S?
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
Chromium metal can be plated from an acidic solution of CrO3. CrO3(aq) + 6H+(aq) + 6e- Cr(s) + 3H2O How many grams of chromium will be plated by the passage of 19,300 C (coulombs).
Draw Lewis dot structure and predict molecular geometry - Show the Lewis structures of the following molecules and then predict their geometry.
A saturated solution of Na2SO4 with excess of the solid is present in equilibrium with its vapor in a closed vessel. Calculate the number of degrees of freedom, f, of the system.
Calculate How many palladium atoms will have to be laid side by side to span a distance of 4.28 mm if The radius of a palladium atom is 137 pm.?
What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl and calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl 2 (g) ( reaction is at equilibrium):
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