How can determine the molecular formula of the compound
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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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.
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?
Suppose the percentage score,p(n), is the function of number of hours, n, that you study in form p(n)=an+b/cn+d. If you wish the score of 80%, how long do you require to study?
If the heat released During the condensation goes only on the way to heating metal if the heat released than Calculate the final temperature of the lead block in degrees Celsius?
They are labeled consecutively and a 10V battery is joined to nodes 1 and 3 (in another words, there are 2 resistors between the battery on one side of the hexagon, and 4 on the other side of the hexagon). Determine the total capacitance in microf
A collapsible vessel which is having the volume of 40.0 L 1.31 mole of dry nitrogen at an unknown temperature and have the pressure of 710 mmHg.
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