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Calculate the molality of C2H5OH in a water solution which is prepare by mixing 50.0 ml of C2H5OH with 100.0 ml of H2O at 20°C. The density of C2H2OH is 0.789g/ml at 20° and water is 0.99970g/ml.
Calculate the height of a column of methanol that would be supported by atmospheric pressure. The density of methane is .787 g/cm^3.
calculate the reaction rate of potassium iodide and hydrogen peroxide to include the order of reaction.
A gas expands in volume from 34.9mL to 74.1mL at constant temperature. Calculate the work done (in joules) if the gas expands against a constant pressure of 2.1atm. Enter your answer in scientific notation.
a 4.50 g sample of licl at 25 degrees celsius dissolves in 25.0 ml of water also at 25.0 degrees celsius. the final
1.20 moles of a nonelectrolyte is dissolved in 1000 g of water. What is the value of the freezing point depression of this solution, given that Kf for water is 1.86 C/m?
An IR spectrum for a sample of this solvent is found to show no appreciable absorbance in the region of 1700 cm-1. Of the given possibilities, what is the most likely identity for this paint solvent
The specific heat of the liquid is 4.7 J/g.K and the specific heat of the vapor is 2.2 J/g.K. its enthalpy of vaporization is 25.1 kJ/mol. If you heat 4.6 kg of liquid ammonia from -62.0 degrees C to its boiling point of -33.6 degrees C, and then ..
a physician wrote a prescription for tylenolreg 325 mg5 ml with codeine 10 mg5 ml liquid 5 ml three times a day x 4
A 32.65-g sample of a solid is placed in a flask. Liquid toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 50.00 ml.
An ideal gas is compressed isothermally from 2.0 atm and 2.0 L to 4.0 atm and 1.0 L. Calculate the values of delta U and delta H is the process is carried out a) reversibly and b) irreversibly
The pH of an acidic solution is 5.71. Calculate the Ka for the monoprotic acid. The initial acid concentration is .010M of
the vanadium in an ore sample is converted to vo2. the vo2 ions produced from the sample are then titrated with mno4-
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