How many moles of cn- ions will be contained
A 245 mL stock solution contains 0.9 M Ca(CN)2. When 105 mL of the stock solution is diluted to 125 mL, how many moles of CN- ions will be contained in the dilute solution?
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What is the crystal lattice energy of LiI? Sublimation energy for Li is 155 kJ/mol and ionization energy for Li is 520 kJ/mol. Sublimation energy for I2 is 62 kJ/mol and dissociation energy for I2 is 151 kJ/mol. The electron affinity for I is -295
Suppose that 1.331 g of impure barium hydroxide is dissolved in enough water to produce 250. mL of solution and that 35.0 mL of this solution is titrated to the stoichiometric point with 17.6 mL of 0.0935 M HCl(aq).
The specific heat of ethanol is 2.44j/g times degrees celcius. How many kilojoules of energy are required to heat 50.0 g of ethanol from -20.0 degrees celcius to 68.0?
What is the pH at the half-stoichiometric point (half-way to the endpoint) for the titration of 0.22 M HNO2(aq) with 0.10 M KOH(aq)?
A sample of propane,C3H8, contains 11.7 moles of carbon atoms. How many total moles of atoms does the sample contain?
If the final temperature reached by the alloy sample and water is 27^{circ}{rm C}, what is the specific heat ({rm cal}/{rm g}^circ{rm C}) of the alloy?
In most general chemistry courses, students calculate the molar mass (MM) of a volatile liquid using the ideal gas law (PV = nRT) in the following form: MM = (mass of vapor*R*boiling point in Kelvins)/(pressure in atmospheres*flask volume).
What is the value for the standard internal energy of formation for acetyl chloride, CH3COCl (l)?
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