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Sulfur forms a wide variety of compounds in which it has +6, +4, +2, 0 and -2 oxidation states. Give examples of sulfur compounds having each of these oxidation states
Determine the amount of heat energy is needed to raise the temperature of 0.362 kilograms of Cu from 23. Degree Celsius to 60 degree Celsius?
why does the color change from blue to green or yellow near the endpoint of titration when the indicator is bromocresol green
To heat 236mL of water from 25 degrees celcius to 78 degrees celcius in 2.00 minutes what must be the heat rating of the heater, in kJ/min
Calculate the root mean square speed of (a) Xe atoms and (b) He atoms at 298K. What si the root mean square of each of these at 500K?
What mass of sucrose should be combined with 479 of water to make a solution with an osmotic pressure of 8.00 at 315 ? (Assume the density of the solution to be equal to the density of the solvent.)
Which of the following properties would you expect to be different for the two enantiomers of 2-pentanol? A. boiling point
Cabbage water will spoil after a few days. How might you make a cabbage indicator with a longer shelf life? According to your cabbage water, what is the pH of baking soda, crushed aspirin, cleanser, garden lime, sugar and lemon juice?
The vapor pressure of pure methanol, CH3OH, at 30 °C is 160. torr. How many grams of the nonvolatile solute glycerol, C3H5(OH)3, must be added to 131. g of methanol to obtain a solution with a vapor pressure of 133. torr?
Consider a light-sensative reaction. What energy in joules per photon, is needed to drive the reaction if delta H of the reaction is equal to 793 kJ/mol. (Remember that there are Avogadro's number of photons per mole of photons.)
Consider another expandable balloon is filled with nitrogen gas. The density of the gas is 1.24 g/L and the outside pressure is 1.05 atm. What is the temperature of the gas?
A 6.50 gram sample of an ore containing chromium is dissovled and then treated with an excess of Na3PO4 (aq), which precipitates out all of the chromium in the ore as chromium (III) phospate, CrPO4.
Benzene (l) has a vapor pressure of 0.1269 bar at 298.15 K and an enthalpy of vaporization of 30.72kJmol^-1. The Cpm of the vapor and liquid phases at that temperature are 82.4 and 136.0 J K^-1 mol^-1, respectively. Calculate the vapor pressure of..
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