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Hydrochloric acid is sold as a concentrated aqueous solution. If the molarity of commercial HCL is 12.0 and its density is 1.18g/cm3
A) what is the molality of the solution?
b) Calculate the weight percentage of HCl in the solution.
write balanced net ionic equations for the following electrolysis reactions using platinum electrodes
write a electrn configuration for an octahedral complex, write the electron configuration for [RhCl6]^-3 in terms of MO labels for ground electronic state.
What is the percent ionization of a 0.186 M solution of this acid? A certain weak base has a Kb of 7.50 × 10-7. What concentration of this base will produce a pH of 10.06?
A solution of sodium chloride contains 502 g NaCI in 900 grams of water. what is the concentration of the colution in parts of a million (ppm)? Round to the nearest tens place. don't forget the unit.
In a 50.0 L container, 4.00 moles of chlorine and 2.00 moles of bromine are placed and kept at 293.0 K until equilibrium is reached. At equilibrium there are 82.63 g of Br2
A cylinder fitted with a piston contains 3.00 moles of He gas (ideal!) at P = 1 bar and is held in a large constant-temperature bath at 400 K. The pressure is reversibly increased to 5.00 bar.
water for the temperature of the trapped gas, will the calculated mass percent of metal in the sample be greater than, less than, or equal to real mass percent?
at 25.0degc a sample of xe gas occupies 545 ml in a piston-cylider apparatus when the external pressure is 751 torr. at
Compute the band gap for this semiconductor material after Consideing an intrinsic semiconductor with a conductivity σ that triples between the temperature 27 degree Celsius and 57 degree celsius.
Calculate the work associated with the compression of a gas from 121.0L to 80.0 L at constant pressure of 20.7 atm.
The elements X and Y form a compound that is 66.67% X and 33.33% Y by mass. The atomic mass of X is twice that of Y. What's the empirical formula?
When the solvent is removed from a sample solution, 3.0 mole of substance B, 7.5 moles of substance C, and 15.0 moles of substance A are left in the solution. What is the mole fraction of substance A in this new solution?
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