Determine the molar mass of the unknown substance
The sample of an unknown substance of .2436-g melts in 20.0 mL of cyclo-hexane. The density of cyclo-hexane found the 0.779-g/mL and the freezing point depression was 2.1 C. Determine the molar mass of the unknown substance.
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Calculate at what mass of aluminum can be formed by the Hall process within a period of 19.3 h, by using a current of4.1 MA? Explain in detail.
Label the 6 nodes consecutively. A 10V battery is joined to nodes 1 and 3. In another words, there are two resistors between the battery on one side of the hexagon, and 4 on the other side of the hexagon. Determine how much current flows in ampere
If profit on each racing skate is $8 and profit on figure skate is $10, how many of each must be made each day to maximize profit?
During the study of net ionic equation for Hc2H3O2 and NH3 H2O which is H+ + NH3 --->NH4+ Why the solution is weak electrolyte but strong conductor when it mixed into the solution? Explain in detail.
The characteristics of an amino-acid of C=O carbonyl stretch has an energy of 3.367 x 10-20 J. Determine the wavelength in nm, where the frequency is s-1, the wave number in cm-1, and its energy in kJ/mol that are associated with this vibrationa
A spelunker is surveying a cave. She follows a path which takes her a distance 173 straight west, then a distance 200 in the direction 45.0 east of south, then a distance 288 at 30.0 east of north. After a fourth un-measured displacement she finds
Determine the number of grams of KOH must be dissolved in the water to produce the 88.0mL of a solution, which will react with 113mL of 1.10 MCH3COOH?
A gaseous hydrocarbon is decomposed and it is having the 82.66% C and 17.34% H, by mass. The volume of 158 ml of the gas, calculated at 556 mmHg and 25 degrees C., is originate be 275 mg. How can determine the molecular formula of the compound?
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