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Carbonic acid is a diprotic acid, H2CO3, with Ka1 = 4.3 x 10-7 and Ka2 = 4.8 x 10-11. Calculate Kb for the carbonate ion, CO32-.
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 C,the volume of the gas is 361 mL. To what temperature must the gas be heated to occupy a volume of 492 mL.
you have pure beta-d-glucopyranose of 100 grams nearly it was dissolved in an ethanolwater combination with the
Water (2770 g) is heated until it just begins to boil. If the water absorbs 5.35 x 10^5 J of heat in the process, what was the initial temperature of the water
20.00mL of radiator liquid, ethylene glycol has a mass of 20.85 g. What is the density of the liquid?
a 40.0 g sample of solid ammonium carbonate is placed in a closed evacuated 3.00 l flask and heated to 400 degrees c.
Write out a detailed mechanism for the formation of dibenzalacetone, using acetone + benzaldehyde in NaOH.
A bottle of wine contains 13.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
Calculate the value of w (work) for the following system if 20.2 g of NaN3 reacts completely at 1.00 atm and 22 °
Hydrogen peroxide decomposes into water and oxygen in a first order process. At 20 degrees C, the half life for the reaction is 10.9 hours.
A proton in a linear accelerator has a de Broglie wavelength of 144 pm. what is the speed of the proton?
Calculate the mass of oxygen (in mg) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.21
have you observed that when you spill water over your skin on a hot day it will cool you down but if you spill
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