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Which of the following are a conjugate acid-base pair in the above reaction? (Select all that apply.)
A. HCO3^1- and H3O^+ B. HCO3^1- and CO3^2-C. HCO3^1- and H2OD. H2O and CO3^2-E. H2O and H3O^+ F. H3O^+ and CO3^2-
Calculate the volume the gas will occupy if the pressure is increased to 1.88 atm while the temperature is held constant
How many milliliters of O2 are consumed in the complete combustion of a sample of hexane, C6H14, if the reaction produces 789. mL of CO2? Assume all gas volumes are measured at the same temperature and pressure.
what concentration in ppm would it constitute? The effective volume of the earth's atmosphere is about 4.2 billion km^3, and take the average pressure to be 550 mm Hg and the average temperature to be -10 degrees C. The molar mass of air is 29 g/m..
Two students measure the density of gold. One works with a 100-g bar of pure gold. The other works with a 200-g bar of pure gold. Which student measures the larger density.
finds that about 10% of the aspiring is converted to salicyclic acid and acetic acid, How many moles of aspirin are in the initial solution? what is the molarity of aspirin? MM=180g what is the rate of reaction?
The lid is tightly sealed on an empty 2.0L soda bottle at 25.0 degrees Celsius and 732 mm Hg. If the bottle is heated to 100.0 degrees Celsius, what is the pressure in the bottle?
Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 60 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 700 watts/sq meter at 50 meters altitude.
Iron has a density of 7.87 g/cm3. What mass of iron would be required to cover a football playing surface of 120 yds × 60 yds to a depth of 10 mm? (1 inch = 2.54 cm; 1 lb = 453.6 g)
A 771 mL gas sample at STP is compressed to a volume of 242 mL, and the temperature is increased to 31?C. What is the new pressure of the gas in Pa
Laboratory-grade diethyl ether contains small amounts of ethanol (1-2%). Is this grade of solvent suitable for the preparation
An sulphuric acid solution has a concentration 3.75 M and a density of 1.230 g/cm3. Determine the molality of the solution.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 63.5 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution.
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