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Ka for HCN is 4.9 × 10-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide?
Consider the following generic chemical equation. 2A+4B ---> 3C. What is the limiting reactant when each of the following amounts of A and B are allowed to react? 2 mol A; 5 mol B 1.8 mol A; 4 mol B 3 mol A; 4 mol B 22 mol A; 40 mol B
determine whether a precipitate will form from the following reactants and if one does form write the total and net
calculate the heat in joules released by the dissolving salt. Assume that the specific heat of the solution is the same as thar of pure water(4.184J/g- celcius) and that the calorimeter is perfect.
a a saturated silver chloride solution contains 1.58 x 10-4 g silver chloride per 100 ml solution. what is the molarity
1FeO3+2 Al= 1Al2O3+2Fe, Determine the percent yield of a reaction that produces 28.65g of Fe when 50.0g of Fe2O3 reacts with excess Al according to the following reaction. Be sure to balance the reaction.
The overall Kf for complex ion Ag(NH3_x+ is 1.7 x 10^7. The Ksp for AgI is 1.5 x 10^-16. What is the molar solubilitiy of AgI in a solution that is 2.0 M in NH3?
A solution is prepared by dissolving 267 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C
Here is it, Bromine is less electronegative than chlorine, yet methyl bromide and methyl chloride have very similar dipole moments. Why
The dried precipitate weighs 10.3g. Calculate the amunt of MgCl2 in the original sample (in weight percent).
The membrane permeable only to Na^+ ions is used is used to separate the following solutions: 0.03M KCl and 0.070M NaCl and 0.070M KCl and 0.03M NaCl. Calculate the membrane potential at 298K.
The Dissolution of lithium iodide is exothermic and the lattice energy is smaller in magnitude than the heat of hydration. Explain why the solution forms and what drives the process
Describe the biogeochemical cycles for H2O, C and N and describe how human activities have thrown them out of their natural balance.
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