What was the molarity of the sodium carbonate solution
A 447 cm3 volume of Na2CO3 solution was warmed with an excess of sulfuric acid until all action ceased. A 5.0 L volume of dry CO2 gas measured at STP was given off and collected. What was the molarity of the sodium carbonate solution?
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A uniformly charged thin ring has radius 13.0cm (0.130m) and total charge 24.0nC (2.40*10^8 C). An electron is placed on the ring's axis a distance 32.5cm from the center of the ring and is constrained to stay on the axis of the ring. The electron
Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3? Show your solution.
When a suspected drunk driver blows 188 mL of his breath through the fuel-cell breathalyzer, the breathalyzer produces an average of 324 mA of current for 10s.
0.22 litre of an idealmonatomic gas (Cv = 3R/2) initially at 12 deg C and 1.7 atmpressure undergo an expansion against a constant external pressureof 1.01 atm, and do 2.3 kJ of work.
In terms of kinetic molecular theory, explain why pumping air into a collapsed soccer ball causes the ball to increase in size and become rigid.
What is the maximum height achieved if a 0.500 kg mass is thrown straight upward with an initial speed of 55 m*s^-1? Ignore the effect of air resistance.
If a homeowner maintains their house at 68F, what outside temperature would be competitive with an oil furnace that recovered 80 percent of the heating value of the fuel?
A gas expands and does P-V work on thesurroundings equal to 287 J. At the same time, it absorbs 216 J of heat from the surroundings. What is the change in energy of the system?
Iron sulfide, FeS, is a sparingly soluble salt with a Ksp of 6.3 x 10^-18. Calculate the molar solubility of iron sulfide in a solution that is saturated with hydrosulfuric acid, H2S ( [H2S] = 0.1 M) and has a pH of 2.0. Ka1 = 8.9 x 10^-8 and Ka2
Hydrogen peroxide solutions are purchased from chemical suppliers at a 3.0% by mass concentration. Calculate the molar concentration of a 3.0% H2O2 solution, assuming a density of 1.0 g/mL.
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