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Critically evaluate the procedure used in this experiment as a quantitative technique for the analysis of copper (II) ion. Suggest sources of errors and ways of minimizing the error
Calculate the mass ( kg ) of the solute C4H8O and the volume ( mL ) of the solvent C6H6 that should be combined to generate 6450 g of a solution that is 2.07 m C4H8O.
How many grams of HCl are required to react with the 344 grams of FeCl2?
A sugar-water mixture contains 45.8 g of sugar and 108.5 g of water. What is the percent by mass of sugar and the percent by mass of water in the solution?
he reduction table in your notes, calculate the standard cell potential for the following reactions. 2 Al3+(aq) + 3 Pb(s) 2 Al(s) + 3 Pb2+(aq)
Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.
Calculate the equilibrium concentrations of boric acid (H3BO3) and the borate anion (H2BO3-) in pH 8 seawater, given a total boron concentration (H3BO3 + H2BO3-)
A buffer solution is prepared by dissolving 1.51 g NH3 and 3.85 g (NH4)2SO4 in enough water to make 0.500 L of solution.
increased the space between the energy levels keeping the temperature fixed or (ii) increased the temperature and keeping the energy levels fixed.
Write chemical equations for the reaction of calcium with the following substances, making sure that the numbers and kinds of atoms are the same on both sides of the equations
How much heat (in kJ) is needed to convert 866 g of ice at -15 degress celsius to steam at 146 degrees Celsius? (The specific heats of ice and steam are 2.03 and 1.99 J/g x C respectively)
Acid strength decreases in the series HI > HSO4- > HF > HCN. Which of these anions is the weakest base?
Which of the following solutions has the highest pH at 25?C?
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