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A particular solution of butanoic acid has a measured pH of 5.10. What is the formal concentration of the acid in this solution? What are the fractional compositions for both the acid and its conjugate base?
Without doing detailed calculation, arrange the following 0.10 M aqueous solutions in order of increasing pH. Explain your ordering.
Explain what is the maximum mole percent of N2 in an air mixture that could be used by divers at depths up to 85 m below sea level without undue risk of nitrogen narcosis
Carbon tetrachloride, CCl4, a common liquid compound, has a density of 1.58 g/cm3. If you place a piece of a plastic soda bottle (d = 1.37 g/cm3) and a piece of aluminum (d = 2.70 g/cm3) in liquid CCl4, will the plastic and aluminum float or sink?
Draw the structure of the geometric isomer of 2-pentene that has the lower melting point.
Calculate the ratio of the effusion rate of oxygen (O2) to that of carbon dioxide gas (CO2). Express your answer in decimal form and calculate your answer to at least four sig figs.
Discuss essential and non-essential amino acids. Explain why protein is described as being of primary importance.
36.8mL of hydrogren gas, from the reaction of a piece of magnesium ribbon with hydrochloric acid, are collected over water in a eudiometer. The temp of the hydrogen gas at 21C, and the atmospheric pressire is 768mmHg.
Knowing that the in general reaction releases 98.0 kJ of heat per mole of hydrogen peroxide as well as that they heat of formation of liquid water is also exothermic by 187.8 kJ, compute the heat of formation of liquid hydrogen peroxide.
At elevated temperatures, methylisonitrile (CH3NC) isomerizes to acetonitrile (CH3CN) :
In the neutralization reaction between sulfuric acid and potassium hydroxide, how much potassium sulfate can be produced if you have 150.0g of sulfuric acid to begin with.
A solution is prepared by dissolving 25.0 g of ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.0 mL sample of this stock solution is added to50.0 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
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?
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