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treatment of .25g sample of impure potassium chloride with excess AgNO3 resulted in formation of .2912g AgCl. Calculate the % of KCl in the sample.
Decide whether or not each of the following metals dissolves in 1 {rm M} {rm HCl}. For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
At a pressure of 1.00 atm and a temperature of 20ºC, 1.72 g CO2 will dissolve in 1 L of water. How much CO2 will dissolve if the pressure is raised to 1.35 atm and the temperature stays the same?
Calculate the weight percent composition of the mixture, using the same assumptions as in part A.
The pKa for the protonation of His to form HisH+ = 6.0. When pH = 7.0, what is the fraction of total histidine that will be in the HisH+ form?
Suppose four weighings of a crcucible were found to be 10.231 g, 10.278 g, 10.256 g, and 10.363. Obtain the average (mean) weight of the crucible
what are the freezing point and boiling point of an aqueous solution of 15.5g glucose (c6h12o6) dissolved in 150 g of water?
a mixture containing 235 mg of helium and 325 mg of neon has a total pressure of 453 torr. what is the partial pressure of helium in the mixture?
that during one such stroke the opposing pressure in the tire was 30.0lb/in2 above the normal atmospheric pressure of 14.7 lb/in2. Calculate the number of joules of work accomplished during each stroke (1 atm= 101.325 J)
if 6.73 g of NaCo3 is dissolved in enough water to make 250. mL of solution what is the molarity of the sodium carbonate ?
Choose the answer in which the two atoms are listed in order of increasing ionization energy (smallest ionization energy listed first).
One of the most common causes of inaccurate melting points is too rapid heating of the melting point bath. Under these circumstance
Assume equilibrium with the calcium carbonate in the sediment and calculate the concentration of calcium ion
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