Consider the hydrogen atom as a one dimensional box with a length of 106 pm. Calculate the wavelength of radiation emitted when its electron transitions from the ������=3 state to the ������=2 state.

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?