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If the pure substance "A" freezes at 72.0°C. A solution of 2.57 g of "B" "B" molar mass 132.6 g/mol and 34.28 g of "A" froze at 53.2°C. Compute Kf of "A".
Reactant: water and 2.51 g of SbCl3 Product: 1.906 g of a solid of antimony, oxygen and chlorine, and 0.802 g of a single gas that is 97.20% chlorine and 2.75% hydrogen What is the empirical formula of the gas and the solid
when 6.6 g solid naoh is dissolved in 30.0 g of water in a coffee cup calorimeter the temperature rises from 25.5 to
How much limestone in kilograms is required to completely neutralize a 4.2×109L lake with a pH} of 5.6
Strontium-90, a radioactive isotope is a major product of an atomic bomb explosion. It has a half life of 28.1 years. a) Compute the first order constant for the nuclear decay.
Methane enters a heat exchanger at a volumetric flow rate of 120.0 m3/min, at a pressure of 1.013 bar and temperature of 5.0°C. At these conditions, the specific enthalpy of methane is -45.181 kJ/kg.
A local FM radio rock station in San Antonio is known to operate at a frequency 99.5 MHz. Determine the energy associated with a mole of photons emitted by this station in J/mol. (106 Hz = 1 MHz) (1/s = 1 Hz).
a 1.885g solid sample containing some feso4 is dissolved in water. the resulting solution is acidified and titrated to
A 100 mL stock solution contains 4.1 M Na3PO4. When 31 mL of the stock solution is diluted to 73 mL, how many moles of Na+ ions will be contained in the dilute solution
What is the bubble-point temperature of the solution. What are the mole fractions of ethanol (e) and water (w) in the vapor phase at the bubble-point temperature
How many electrons can be removed from element 69 before it is reduced to its core electron configuration? For the purposes of this question, the core electron configuration is the configuration of the next lightest rare gas atom.
A solution of acetic acid, HC2H3O2, on a laboratory shelf was of undetermined concentration. If the pH of the solution was found to be 2.39, what was the original concentration of the acetic acid? ___M
when co2 is bubbled through an ether solution of benzyl magnesium bromide and the resulting mixture is acidified phenyl
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