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A sample of oxygen gas has a volume of 3.34l at 21 c . what volume will it occupy at 144 F if the pressure and number of mol are constant
The heat energy required to melt 1.00 g of ice at 0 degrees C is 333J. If one ice cube has a mass of 62.0 g, and a tray contains 16 ice cubes, what quantity of energy is required to melt a tray of ice cubes to form liquid water at 0 degrees C
Determine the symmetry elements of objects with the same shape as the boundary surface of a) an s orbital, b) a p orbital c) a dxy orbital d)a dz2 orbital.
what is the limiting reactant when 3.41g of lithium with 2.79g of copper II nitride?predict the products, write a balanced equation, calculate the limiting reactant.
what is the concentration of the dye in a solution with a percent transmittance reading of 45.8% at 640 nm
What is the pH after 13.3 mL of base is added? The Ka of butanoic acid is 1.5 X 10^-5.
2- hexanone and 4 - methyl-2-pentanone are isomers, thus their molecular weights are equal. What are some reasons why their boiling point and GC retention time is different
a 150.0 g sample of metal at 80 c is added to 150.0g of H2O at 20 c. the temperature rises to 23.3 c. assuming that the calorimeter is a perfect insulator, what is the specific heat of the metal?
The central atom has 4 electron domains. d) The central atom has 5 electron domains. e) The central atom has 2 electron domains.
What is the volume of 455 mL of oxygen gas at 67.0°C and 300. mm Hg if the conditions are adjusted to 890. mm Hg and 107°C? Assume the amount of gas is held constant.
Consider the cell prepared with 2.0 M Cd2+ and 0.45 M Zn2+ solutions: Zn(s) + Cd2+(aq) --- Zn2+(aq) + Cd(s)
Consider a molecule with spacing between two energy levels of 0.250 kJ mol-1. Calculate the wavelength and wavenumber of the photon that would be needed to lead to an excitation between these two levels.
All the offspring of a cross between a normal winged fly and an miniature winged fly have normal wings. What is the expected phenotypic ratio of a cross between two miniature winged flies?
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