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Calculate the pH of a solution made by mixing 100. mL of 0.200 M acetic acid (HC2H3O2) with 100.0 mL of 0.100 M NaOH. (Ka for HC2H3O2 = 1.8 x 10-5)
4.44
4.74
5.04
4.00
5.24
Provide a method for separating the mixtures of two or three compounds, dissolved in a solvent diethyl ether. In each case one of the components will be a neutral compound.
Consider the following chemical equation. Cl2(g) + O2(g) ? Cl2O3(g) Assuming all gases are at the same temperature and pressure, how many milliliters of oxygen gas must react to give 3.00 L of Cl2O3
Use Coulomb's law to calculate the ionization energy in {\rm kJ/mol} of an atom composed of a proton and an electron separated by 80.0 pm
Calculate the terminal velocity of particles with a density of 1.3 g/cm3 and a diameter of 250 microns falling through water at 200 C
the LDH molecule always contains 4 polypeptide subunits and each subunit can be either a H (heart) or a M (muscle) subunit. how many isozymes are possible
a student was asked to identify an unknown hydrate by following the procedure described in this module. after heating
What iron phase is characterized by body-centered cubic, a solid solution of carbon and/or alloying elements in FCC iron (carbon ranges from 0 ~ 0.025%)
a 100000 gal tank is 75 full of liquid containing 60000 lb of solid in suspension. water flows into the tank at a rate
What is the theoretical yield (in grams) of the precipitate when 22.2 g of iron(II) chloride reacts in solution with 10.91 g sodium hydroxide
a quantity of liquid methanol ch3oh is introduced into a rigid 3 l vessel the vessel is sealed and the temperature is
Calculate the pH in a solution prepared by dissolving 0.08 mol of solid NH4CL in 0.450 L of 0.35 M NH_3. Assume that there is no volume change.
Calculate the molar mass of an unknown solid (assume a non nonelectrolyte) if 1.35 grams of the solid was dissolved in 15.0 grams of dodecanol and caused a freezing point depression of 2.34 degrees Celsius.
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