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Sufficient sodium cyanide, NaCN, was added to 0.015 M silver nitrate, AgNO3, to give a sloution that was initially 0.100M in cyanide ion, CN-. What is the concentration of silve ion, Ag+, in this solution after Ag(CN)2- forms? The formation constant Kf for the complex ion Ag(CN)2- is 5.6X10^18
classify each solute represented in the following equations as a strong, weak, or nonelectrolyte: a)CH3-OH(l) H2O> CH3-OH(aq). b)MgCl2(s) H2O> Mg2+(aq) + 2Cl-(aq). c) HClO(aq) H+(aq) + ClO-(aq)
A nitric acid solution containing 71% HNO3 (by mass) has a density of 1.42g/mL. how many moles of HNO3 are present in 1.00L of this solution.
a 2.70 g sample of solid ch33nhcl s is dissolved in 446 ml of water in a coffee cup calorimeter. once all of the
calculate the pH of the buffer after the addition of 0.15 mL of 6M HCl based on the known value of Ka for acetic acid
a coffee contains 100 mL of H2O. initial temperature of calorimeter is temperature 23 C.if 8.20 g of CaCl2 is added to calorimeter. what will be the final temperature of the solution in the calorimeter.
calculate the amount of heat in joules (q) required to affect this temperature change and the total change in internal energy, ?U. Note that some books use ?E as the symbol for internal energy instead of ?U.
If glass beads in the lab were replaced by a material with less surface area, will liquid seperation be better or worse
What mass of Li2SO4 is formed from mixing 24.5 mL of 1.32 molar LiOH with 10.2 mL of 2.43 molar H2SO4
a chloroform solution of caffeine c8h10n4o2 contains concentration of 0.0868 m . compute mole fraction of
At 0.0C, if the volume of air is 1.8 mL and the pressure of the atmosphere that day is 665 mmHg, what is the number of moles of air?
Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3). How much limestone (in kg) is required to completely neutralize a 4.3 billion liter lake with a pH of 5.5?
Beaker contains aq soln of 6.94*10^-3M NiCl_2. beaker contains aq soln of 2.06*10^-5M Na_2CO_3. the two solns are mixed together (no volume change) if NiCO_3 has a Ksp of 1.42*10^-7 what do you expect to see?
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