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A mass of 1.37 g of an unknown gas is introduced into an evacuated 1.70 L flask If the pressure in the flask is 0.814 atm at 98 degrees C, which of the following gases might be in the flask?
a. CH4
b. C2H2
c. C2H6
d. C3H8
e. C4H10
What is the entropy change if two mole of liquid water is heated from 20 C to 100 C under constant pressure? Cp=75.5 J/mol*K over this temperature interval
During the saponification of ethyl tetradecanoate, would you expect the product to generate foam/froth when mixed
Many cold packs contain ammonium nitrate and water. The dissolving of ammonium nitrate is endothermic. Which of the following best describes the energy and entropy changes that occur for the ammonium nitrate system
Draw a flow sheet to show how you would separate the componenets of a mixture containing an acid substance,toluic acid, a basic substance, p-bromo-aniline and anthracene, a nuteral substance.
Concentration of glucose complex form stock? Set of standard solns was prepared by taking a known volume of a stock glucose soln, containg 1.000 g glucose dissolved in 100 mL of distilled water
What is the osmotic pressure of a solution made from dissolving 85.0g of glucose in 800ml of water at 19.0 C.
Calculate the number of carbon atoms in 0.75 L of acetone (CH3COCH3). (density = 1.3 g/mL and boiling point = 48.5 degrees Celsius)
An empty volumetric flask, weighing 60.42 grams, weighed 309.60 grams when filled with water. After emptying the water and drying the flask
One molecular form of elemental sulfur is a ring of eight sulfur is a ring of eight sulfur atoms. As one molecule of this element is burned to make sulfur trioxide, how many oxygen molecules are used?
Why is The dehydration of cyclohexanol to cyclohexene a traditional experiment to illustrate the acid-catalyzed dehydration of an alcohol to an alkene ?
If R = 0.0821 liter-atmospheres/mole-degree K, the flask volume is 275 ml, the pressure is 775 torr., calculate the density of the vapor for CH2Cl2 at 75C 2.
When pure carbon burns in air, 10.0 kg of carbon react with the oxygen in the air to form 36.7 kg of carbon dioxide. Calculate the percentage of oxygen contained in carbon dioxide.
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