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A buffer contains equal amounts of a weak acid and its conjugate base and has a pH of 5.25. Which of the following values would be reasonable to expect for the pH after addition of a small amount of HCl?
An electric power station annually burns 3.6 107 kg of coal containing 1.8 percent sulfur by mass. Calculate the volume of SO2 emitted at STP.
Epsom Salts is a hydrate, which means that a certain number of water molecules are included in the solid structure. The formula for epsom salt can be written as MgSO4* X H2O
What is the final volume of 845 mL of neon gas at 202°C if the gas is cooled to 86.0°C?
a 25- sample of an alloy at 98 is placed in 50. water at 19.if the final temperature reached by the alloy sample and
ironiii is polarographically reduced to ironiiat potentials more negative than about 0.4v versus sce and is further
the boyle temperature is the temperature at which the coefficient b is zero. Therefore, a real gas behaves like an ideal gas at this temperature. (a) Give a physical interpretation of this behavior.
Draw a circuit diagram that subtracts two inputs signals and then amplifies the subtracted signal
how many milliliters of .1229 M NaOH are needed to completely neutralize 50.00mL of .1012M H2SO4 solution
A helium-filled balloon has a volume of 2.75 L at 17 C. The volume of the balloon decreases to 2.36 L after it is placed outside on a cold day. What is the outside temperature in K?
The concentration of O2 in water required to support aerobic aquatic life is 4.0 mg L-1. What is the partial pressure in torr of O2 in the atmosphere that corresponds to this concentration. The Henry's law constant for O2 in water is 3.27 x 107 to..
2-methyl-2hexanol is reacted with sulfuric acid at around 800C. The two products formed are 2-methyl-1-hexene (19%) and 2-methyl-2-hexene (81%). Show the chemical equation for this reaction. Explain fully why 2-methyl-2-hexene is the major product..
What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.50 at 25 degrees C? The Ksp of Fe(OH)3 is 6.3 x 10^-38 at 25 degrees C.
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