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1. Suppose it takes 33.69mL OF 0.005123 M EDTA to titrate 25.00mL of hard water solution
a) What is the concentration expressed as molarity of Ca2+ of hard water ions in the solution?
b) If the metal ions in the hard water all came from CacO3, how many grams of CaCO3 would be in 1.000L of the solution (in other words, determine g CaCo3/L)
C) Convert g CaCO3/L calculated in (b) to mg CaCO3/L. (This is equivalent to ppm)
2. Rank the following alkal iearth metals in their order of solubility starting from the highest. Ba2+,CA2+.Mg2+, Sr2+.How does this trend compare with the order of the alkaline earth metals on the periodic table?
At 40oC, Kc=0.0303 for the reaction below. H2 + Cl2 --> 2 HCl In an experiment carried out at 40oC, the initial concentrations were [H2]=[Cl2]=[HCl]=2.25 mol/L. What is the equilibrium concentration of HCl
Compute the maximum amount of work that can be obtained from the galvanic cells at standard conditions listed below. Use the table for standard reduction potentials.
Classify each reactant as the reducing agent, oxidizing agent, or neither.
A 65.5-g piece of lead at 91 °C was immersed into 50.0-g water at 25.0 °C. The water temperature rose to 27.5 °C. Calculate the molar heat capacity of the metal.
Determine the dilution of the stock bleach solution (NaOCl). The bleach you will be using will be somewhere around 5.5% (weight/volume). Convert this to molarity.
the electronic configuration [Ar]3d2. Using the extended Hund's rules, determine the term symbol of the lowest energy state of Ti2+.
What are the parts of the dye molecules that affect the Rf of the spots as they move up the tlc plate. Please list several and explain why using Lewis structures.
denaturation of a protein takes place over a small range of temperature as shown by the heat denaturation curve of
A buffer solution is prepared by dissolving 1.50 g each of benzoic acid, C6H5CO2H, and Sodium Benzoate, NaC6H5CO2, in a 150.00 ml of solution. The Ka for benzoic acid = 6.3E-5.
A liquid fuel mixture contains 28.25% hexane, 14.05% heptane, and the rest octane. What maximum mass of carbon dioxide is produced by the complete combustion of 12.0kg of this fuel mixture
Calculate the pH for each of the following cases in the titration of 25.0 mL of 0.180 M pyridine, C5H5N(aq) with 0.180 M HBr(aq):
Calculate the standard enthalpy of formation of methane, CH4 (g), using a C-H bond enthaply of 413 kJ mol-1 and the atomization enthalpies of 716.682 and 217.96 kJ mol-1, respectively for C and H.
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