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A pharmaceutical preparation made with ethanol (c2h5oh) iscontaminated with methanol (ch3oh). a sample of vapor above theliquid mixture contains 97/1 mass ratio of c2h5oh to ch3oh. What is the mass ratio of the alcohols in the liquid? at the temperature ofthe liquid the vapor pressures of c2h5oh and ch3oh are 60.5 and126.0, respectively.
A 0.1019g portion of an aspirin tablet was dissolved in sufficient water to prepare 1.000L of solution. A pipet was used to transfer 10 mL of the solution to a 100 mL volumetric flask.
a volume of 80.0 ml of h2o is initially at room temperature 22.0 c. a chilled steel rod at 2.00 c is placed in the
there are three compounds are given as i. pentane ii. 2-methylbutane iii. 23-dimethylbutane iv. 22-dimethylpropane
Calculate the percent by mass (m/m) of potassium nitrate in a solution made from 45.0 g KNO3 and 295 mL water
Please complete and balance the molecular equation and write a net ionic equation, make sure to include the physical states of the compounds, if there is not reaction write NR for the products.
If the entropy of a collection of molecules in 50,000 boxes is 3.73E-20 J/K, how many molecules are there
What are the quantum numbers associated with the last electron[highest energy] in ground state Zn. please be very explicit as to the process and confer all of your internal dialog as you perform the exercise.
a melting point of 328.0 Celsius degrees, and a heat of fusion of 5.5 kcal/kg. How much heat must be provided to melt a 250.0 kg sample of lead with a temperature of 20.0 Celsius degrees
Sucrose, C12H22O11, reacts slowly with water in the presence of an acid to form two other sugars, glucose and fructose, both of which have the same molecular formulas, but different structures. C12H22O11 + H2O ? C6H12O6 (glucose) + C6H12O6 (fructo..
Who does the first ionizaiton energy of the alkali metal in a given period compare with the first ionization energy of the halogen in the same period. What is the result in terms of how these elements tend to react with each other
If a 484 mL sample of gas at 232 °C is allowed to expand (at constant pressure) to a volume of 494 mL, what will be the new temperature (in °C).
A mixture of 0.10 mol of NO, 0.050 mol of H2, and 0.10 mol of H2O is placed in a 1.0- L vessel at 300 K . The following equilibrium is established:
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