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Use the Henderson-Hasselbalch equation to calculate the pH of each solution: a solution that is 0.140 in propanoic acid and 0.125 in potassium propanoate.
Define internal energy and enthalpy. What is the difference between the two? List the following gases in order of increasing root-mean-square speed, all at the same temperature: H2, He, O2, Ne
Calculate the molality and molarity of an NH3 solution made up of 37.0 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
Use the graph from the Introduction that plots the density of ethanol solutions from 20 to 60 mass percent to answer the following questions:
How many liters of ethane, measured at 17.0 degrees Celsius and 719 Torr, must be burned to liberate 2.94 X 10^4 kJ of heat?
What is the cruising range (in miles) of the automobile on a full tank, assuming all the energy is transferred to the wheels? If the actual cruising range is 732 km, what is the efficiency of the engine?
An orange compound was added to the top of a chromatography column. Solvent was added immediately, and the entire volume of solvent in the solvent reservoir turned orange.
Calculate the pH at the equivalence point for the titration of 0.100 M methylamine
What can you conclude from a graph where the plot of ln p (pressure) versus t (time) is linear instead of curved? (for conversion of methyl isonitrile into acetonitrile)
A frog with the a mass of 4.60 oz can catch 2.0 flies every 3.5secs. if the avg. fly has a mass of 2.5mg how long will it take the frog to increase its mass to .35kg
Calculate the value of Delta S in heating 3.5 moles of a monatomic ideal gas
Cobalt-60, which undergoes beta decay, has a half life of 5.26 years.
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
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