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 0.4268 gram sample of a a potassium hydroxide-lithium hydroxidemixture requires 30.88 mL of 0.3535 M HCl for its titration to the equivalence point.
Calculate the pressure and composition of air 100 miles above the surface of the earth assuming that the atmosphere has a temperature of 0 celsius independent of altitude.
Use the answer to (a) calculate the first approximation to the correction term and then use successive approximations to obtain a numerical answer for part (b).
The minimum energy required to break the oxygen to oxygen bond in O2 is 495 kj/mol. Find the wavelength of a photon that has this energy to break one oxygen bond.
A tire holds air (assume it's all N2) at a pressure of 3 atm, and in one week the pressue drops by 1% because of inevitable leakage at the rim, when the temperature is 300 K.
The acid equilibrim constant (k) for benzoic acid is 6.46 X 10 ^5. Note that this calculatio doesn't account for the benzoic acid that has precipitated from solution, but you can assume that the higher the ration, the more benzoic acid will precip
An ideal gas undergoes a reversible isothermal expansion at 96.6°C, increasing its volume from 1.76 L to 3.55 L. The entropy change of the gas is 19.7 J/K. How many moles of gas are present?
What is the total electron energy for Be, Be, and Be in thepresence of the Zeeman Effect. (Hint: You may use a symbol rather than numbers to express the energy of each interaction.)
5 grams of water are evaporated: converted to gaseous water vapor. Is the mass of the water less than, equal to, or greater than 5 grams and do the water particles remain the same in size when water evaporates to water vapor.
Vaillin (used to flavor vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest amount. The threshold limit is 2.0x10^-11 g per liter of air.
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