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A 1.50 mole sample of an ideal gas is allowed to expand adiabatically and reversibly to twice its orignal volume. In the expansion the temperature dropped from 296ºK to 239ºK. Calculate ?E and ?H for the gas expansions
Suppose you were instructed to add 38 g of sodium chloride (NaCl) to 100 mL of water. a. prepared as instructed at 20°C b. heated the mixture in (a) to 100°C
Estimate the temperature needed to achieve the fusion of deuterium to make an alpha particle. The energy required can be estimated from Coulomb's law
Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to significant digits
how many no. of hydrogen ions are present in 10 millionth part of 1.33 cc of pure water at 25 degree celsius.
explain why the vitamin tablet is crushed before titrating with the iodate titrant.
The pressure in an automobile tire is 1.83 atm at 26.0°C. What will be the pressure if the temperature warms up to 37.0°C.
Lucite is 71.4% carbon, 9.59% hydrogen, and 19.01% oxygen. What is the empirical formula for Lucite?
the valve between them is opened and the gases are allowed to mix. What would be the final pressure in torr after mixing, if initially C3H8 is in the first flask (Volume = 4.000 L)
What is the reaction rate when the concentration of HgCl2(aq) is 0.180 M and that of C2O42-(aq) is 0.281 M if the temperature is the same as that used to obtain the data shown above
A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g
Describe the bonding in N3- (Azide ion) in terms of an molecular orbital picture in which each terminal N atom is sp hybridized with one hybrid orbital accommodating one lone pair of electrons
If a pure R isomer has a specific rotation of -134.0°, and a sample contains 60.0% of the R isomer and 40.0% of its enantiomer, what is the observed specific rotation of the mixture
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