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If what make an acid strong is the extent of dissociation, at what sorts of concentrations (high or low) do weak acids behave more like strong acids? Explain
Explain the effect of pH on the aqueous solubility of dissolved organic matter (use the 13C NMR spectra on the International Humic Substances Society as your primary reference). Speculate on how DOM fractionation would change crossing a riverine (..
Elemental analysis is performed on an organic liquid with a fishy odor. Vaporization of 275.0 mg of the compound in a 190-mL bulb at 110°C gives a pressure of 400.0 torr. What is the molar mass of this compound? Enter units.
A sample of an unknown gas effuses in 11.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.19 min. What is the molar mass of the unknown gas
A standard men's basketball has a circumference of 29.5 inches. If I fill the ball with Helium to the recommended 9.0 psi at room temperature (25 C), how many grams will the Helium in the ball weigh?
Balanced thermochemical equation and enthalpy diagram, The decomposition of zinc carbonate, ZnCO3(s), into zinc oxide, ZnO(s), and CO2(g) at a constant pressure requires the addition of 71.5kJ of heat per mole of ZnCO3.
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal
One mole of water vapor is expanded reversibly from 5 L to 15 L at a temperature of 800 K. Calculate q, w, Delta E for this process assuming that water behaves as a van der Waals gas, making use of the formal relation:
A 47.0 mL sample of gas in a cylinder is warmed from 28 degrees Celsius to 91 degrees Celsius. What is the final temperature?
What is the volume of the gas at STP conditions? b.) What is the molar volume of the gas?
When 10cm3 of a gaseous hydrocarbon CaHb was exploded with an excess of oxygen, a contraction of 35cm3 occured (all volumes are measured at rtp). On treatment of the product with NaOH solution, a contraction of 40cm3 occured. Deduce the formula of..
How many grams of TiCl4 are needed for complete reaction with 155L if H2 at 430 degrees C and 780mmHg pressure? How any liters of HCl gas at STP will result from the reaction described in part (a)?
A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial..
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