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The amount of energy released when an electron adds to a neutral atom to give a negative ion is called the atom's electron affinity. Which would you expect to have the larger electron affinity, C or F? Explain.
The mass of a cube of iron is 252 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
The combustion of .1703 mole of hydrocarbon produces 12.27g H2O and 22.48g CO2. What is the molar mass of the hydrocarbon?
An electric power station annually burns 3.3 107 kg of coal containing 1.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP
Anton Von L. a 17th century pioneer in the use of the microscope, described the microrganisms he saw as "animalcules" whose length was "25 thousandths of an inch."
What mass of NaN3(s) must be reacted in order to inflate an air bag to 74.6 L at STP?
A 145 g aluminum cylinder is removed from a liquid nitrogen bath, where it has been cooled to -196° C. The cylinder is immediately placed in an insulated cup containing 226 g of water at 15.0° C,
What is the final temperature when 150 mL of water at 90,0 C is added to 100.0 mL of water
Calculate ?H for the reaction 2C(s) + H2(g) ? C2H2(g) given the following reactions and their respective enthalpy changes
you want to carry out chemical reaction that is water sensitive, however the glassware contains salts and you need water to wash them out. the reaction you are going to perform can be done either in acetonitril or toluene
A cell has a standard emf of +0.116 V at 298K. What is the value of the equilibrium constant for the cell reaction if n=1, n=2, and n=3
The concentration of styrene is lower in the toluene solution than in pure styrene so all bimolecular polymerization steps occur more slowly. d) the order of the reaction increases in toluene
0.000333 g fluorescein (332.32 g/mol) is dissolved in 225 mL solution of ethanol. The density of ethanol is 0.785 g/mL. What is the concentration of the solution in molarity (M)
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