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The green color observed in the aurora borealis is produced by the emission of a photon by an electronically excited oxygen atom at 558 nm. Calculate the energy difference between the two levels involved in the emission process
Calculate the pressure when the volume is 1.27 L and the temperature is 3.00 × 102 K.
If a mixture of 41.25 g of aluminum and 58.83 g of oxygen reacts, what mass of aluminum oxide can be formed?
The addition of a sodium flouride solution to one of lead nitrate results in a net ionic equation of PB 2+ (aq) + 2 Fe- (aq) yielding PbF2 (s). If 25.0 ml of 0.200 M NaF solution are mixed with 10.0 ml of 0.150 M Pb(NO3)2 solution, how many grams ..
If 95 0C of heat are added to a pure gold coin with a mass of 20 gm, what is its temperature change? Specific heat capacity of gold is 0.128 .
What nuclide is produced in the decay process? Write the balanced radiochemical equations for both (proton absorbtion and alpha decay) processes.
oxygen are required to react with 5.62 mol nitrogen to produce dinitrogen trioxide?
efficiency is 2000 theoretical plates, Void volume is 1mL. Calculate the resolution between these compunds.
The reading on the tank pressure initially rises very quickly then much more slowly eventually reaching a value of 3.27 mpa. A ssume T final=19C. How many moles of air in the tank initially ?
Draw the organic product(s) of the reaction of p-methylbenzoic acid with N-bromosuccinimide in CCl4
What is the maximum number of electrons that could be ejected from this metal by a burst of light (at some other frequency) with a total energy of 1.06× 10-7 J?
The rate constant for a certain reaction is = 5.70×10-3 s^-1. If the initial reactant concentration was 0.650 M, what will the concentration be after 14.0 minutes.
Draw the structure of each alkyl halide and determine if it is primary, secondary, or tertiary and if the halogen is on an aliphatic, benzylic
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