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A 1.00 mole sample of He is placed in an empty vessel to make a pressure of .500 atm. A 48.0g quantity of methane, CH4, is added to the vessel.
a) Explain what is the mole fraction of the methane in the vessel?
b) Explain what is the total pressure in the container?
A rigid ball that contained 25.0 liters of air at 22°C and 6.25 atm pressure was placed in an oven at a temperature of What was the new pressure inside the ball?
the amount of manganese in steel is determined by changing it to permanganate ion. the steel is first dissolved in
Oxygen gas has an oxidizing strength comparable to that of nitric acid. Patina is a green or greenish blue coating that forms on copper metal in the environment. Account for its formation.
Calculate the change in internal energy, (Delta E) for the reaction. What is the enthalpy of formation per mole of product for the reaction
The boiling point of methanol is 72.2o C. The molar boiling point elevation constant for methanol is 2.7o C/m. What is the boiling point (in oC) of a solution prepared by dissolving 50g of acidic acid C2H4O2 in 100g of methanol? (Tbo =94.7oC)
What is the wavelength (in nm) of photons which have energies of 895 kilojoules per mole
Draw the Lewis Dot Structure for both substances b. Determine the electron pair geometry c. Determine the molecular geometry d. Compare the F - C - F bond angle to the H - S - H bond angle e
what is the density of a block of marble that occupies 238 cm3 and has a mass of 973
It was found that 19.33 mL of an HI solution are needed to react completely with 320 mL of a LiOH solution that has a pH of 11.87. What is the molarity of the HI solution
what is the value of kf for acetic acid given that its freezing temperature is 16.6 c and its density is 1.049 gml?
A 68-g ice cube at 0°C is placed in 680 g of water at 22°C. What is the final temperature of the mixture?
A common by-product in this reaction is biphenyl, which is generated through a coupling reaction of phenylmagnesium bromide with unreacted bromobenzene. Draw the structure of biphenyl.
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