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Ch 6 review

# Ch 6 review - The wave nature of matter Louis de Broglie...

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Louis de Broglie posited that if light can have material properties, conversely, matter should exhibit wave properties. He demonstrated that the relationship between mass and wavelength was as follows… For light: E = mc2 E = hν = hc / λ Therefore, mc = h / λ and for particles : (mass)(velocity) = h / λ OR… The wave nature of matter λ = h mv

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What is the deBroglie wavelength of: a) A baseball (115 g) moving at 100 mph b) An electron with velocity = 1.9 x 108 cm/s The wave nature of matter
What is the de Broglie wavelength of a neutron moving with a velocity of 4.20 m/s? Doin’ the Wave (behavior of matter)

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Photodissociation of water, H2O (l)  H2 (g) + O2 (g), has been suggested as a source of hydrogen gas. H rxn for the reaction is 285.8 kJ per mole of water decomposed. Calculate the maximum wavelength (in nm) that would provide the necessary energy for this reaction to occur. Laser light as energy for reaction
Microwave ovens operate using radiation of wavelength λ= 12.0 cm. How many moles of photons are required to raise the temperature of 345 g water from 26.5 to 99.8 oC?

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