1 for a hydrogen atom calculate the energy of a photon in, Ask an Expert

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1. For a hydrogen atom, calculate the energy of a photon in the Balmer series that results from the transition n = 3 to n = 2. The Rydberg constant is 1.0974 × 107 m-1. (h = 6.6262 × 10-34 J·s and c = 3.00 × 108 m/s).
(Hint: Use ( ) where i = the initial state and f = the final state)

2. Aluminum reacts with oxygen to produce aluminum oxide.
4 Al(s) + 3 O2(g) → 2 Al2O3(s)
If 4.0 moles of Al react with excess O2, how many moles of Al2O3 can be formed?

3. A chemical reaction in a bomb calorimeter evolves 4.66 kJ of heat. If the heat capacity of the calorimeter is 1.38 kJ/°C, what is the temperature change of the calorimeter?

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Category:- Chemistry
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