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calculate the molarity (M) of the solution when water is added to prepare each of the following: a)25.0 mL of a 18.0 M HCl solution is diuted to 500 mL. b)50.0 mL of a 1.50 M NaCl solution is diluted to 125 mL. c)4.50 mL of a 8.50 M KOH solution is diluted to 75.0 mL
Ethanethiol (C2H6S) is a compound with a disagreeable odor that can be used to impart an odor to natural gas. When ethanethiol is burned, the sulfur reacts with oxygen to form SO2
A 10.0 ml sample of aqueous HCl requires 18.66 ml of 0.206M NaOH to reach the endpoint . What is the molar concentration of HCl ? The chemical equation of the reaction is
Calculate the molarity of S2O32- if 3.0 mL 0.10 M K2S2O8, 2.0 mL 0.10 M K2SO4, 1.0 mL 2% starch, 2.0 mL 0.010 M Na2S2O3, and 5.0 mL 0.20 M KI are mixed.
Calculate the net charge of Aspartic Acid. Its given that Aspartic acid has a pK1 COOH at 1.99 and also a pK2 NH3 group at 9.90
The mass of a cube of iron is 338 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
The specific heat of silver is 0.235 J/g·K. Its melting point is 962°C, and its heat of fusion is 11.3 kJ/mol. What quantity of heat, in joules, is required to change 7.50 g of silver from solid at 25°C to liquid at 962°C?
Calculate the uncertainty in position. The function Ax(1-(x/a)) is an acceptable wave function for the particle in the one dimensional
calculate avaerage rate of decomposition of H2O2 between 0 & 4.32 x 10^4 s.
For cell with hydrogen and silver-silver-chloride electrodes, the cell potential was measured at 0.342V at 298K. Calculate the mean activity coefficient for HCL if the molality of the solution is 0.2 m.
What is the probability of populating the first excited vibrational state (n = 1) at 298 K? Does isotopic substitution affect the probability? Would the intensity of absorption peaks be affected by isotopic substitution?
Calculate the enthalpy and entropy departure for water at 400 C and 30 MPa using generalized correlations. Compare these values to those in the steam tables
Electrolysis can be used to determine actomic masses. A current of .600 amperes deposits 2.42 grams of a certain metal from its salt solution in 1.00 hour. A second experiment shows that the dissolved salt of the metal is in a +1 oxidation state.
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