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Utilizing standard enthalpies of formation, find out how much heat is released when 25.0g of CH4 is subjected for combustion is excess O2? All reactants and products are gases.
On a TLC plate if two compounds have Rf values of .50 and .61, how far will they be separated from each other on a plate
Assuming that your salt was a hydrated form of a sulfate mso4 nh2o calculate n. What values are quoted in handbooks for common hydrates
using a sample of gas having 1.47 mol at the temperature of twenty five degree celsisu exerts a pressure of 398 torr
A buffer is prepared by mixing 453 mL of 0.143 M HCl with 983 mL of 0.848 M ammonia (NH3). Given that the Kb of NH3 is 1.8 x 10-5, calculate the pH of the solution.
Three common hydrocarbons that contain four carbons are listed here, along with their standard enthalpies of formation
The arsenic in a 1.223 g sample of a pesticide was converted to H3AsO4 by suitable treatment. The acid was then neutralized, and 40.00 ml of 0.07891 M AgNO3 was added to precipitate the arsenic quantitatively as Ag3AsO4.
How can Infrared Spectrometry and/or NMR spectroscopy be useful in helping to identify structural features of an adduct
Calculate the volume of a gas if 10.0 ml of pure alcohol (C2H6O) is vaporized at its normal boiling point. (assume 1 atm pressure)
Carbonyl fluoride, COF2 , is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride
If Sodium hydroxoide has a H+ of 4.2 x 10^ -10, then what is its OH- , pH, and pOH. If hydrochloric acid has a pOH of 11.5, then what is its pH, OH-, and H+. If potasssium hydroxoide has a pH of 2.5, then what is its H+, OH-, and pH
a 55.0g piece of copper wire is heated, and the temperature of the wire changes from 19.0C to 86.0C. The amount of heat absorbed is 1.4 kilojoules. What is the specific heat of copper?
Meals-ready-to-eat (MREs) are military meals that can be heated on a flameless heater. The heat is produced by the following reaction: Mg(s) + 2 H2O(l) ? Mg(OH)2(s) + H2(g)
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