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Explain why the wavelength of light fluoresced by a molecule is longer than the exciting light (absorption) but light fluoresced by an atom is the same wavelength as the exciting light
How many liters of hydrogen gas are collected over water at 18 0C and 725 mm Hg when 0.84 g of lithium reacts with water. P= 15.5 torr
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. Even an empty can contains residual gaseous propellant.
What mass of NO2 can be produced by the complete reaction of 40.00 g of ammonia with 98.00 g of oxygen: 4NH3 + 7O2 4NO2 + 6H2O
how far will they be separated (in cm) from each other on a plate when the solvent front is developed to 15cm? Draw an approximate picture if what the TLC slide would look like.
How do you write structural formulas for all the constitutionally isomeric compounds having the given molecular formula C3H9N,
describe the preparation of 400 mL of a solution that is 0.0500 M in I-, starting with MgI2.
Explain both alkene and carbocation stability as it relates to hyperconjugation. - Explain how hybridization relates to alkene stability.
A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68 mg of the compound yields 16.01 mg CO2 and 4.37 mg H20.
Determine the molar concentration of CH 3 COOH present in the vinegar?
the colors of the solutions are red, yellow, green, and blue. Further experiments reveal that two of teh complex ions are paramagnetic with four unpaired electrons and teh other two are diamagnetic. What can be deduced from this information about ..
What are the coefficients of the reactants and products in the balanced equation above? Remember to include H2O(l) and H+(aqu) in the appropriate blanks.
When 1.269 g of this compound (molar mass = 103.67 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 6.029 °C. What is the heat capacity (calorimeter constant) of the calorimeter
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