Heat Flashcards

1
Q

what is Planck’s constant?

A

6.63 x 10^-34

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2
Q

solving for EM radiation, what is energy equal to?

A

E=hv (h is Planck’s constant & v is frequency)

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3
Q

solving for EM radiation, what is speed equal to?

A

C=λv (C is speed & λ is wavelength & v is frequency)

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4
Q

what is speed equal to?

A

3.0 x 10^8

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5
Q

according to Neil’s Bohr model, what is the equation for calculating energy transfer as electrons jump?

A

(-2.18 x 10^-18) (1/n^2 final - 1/n^2 initial)

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6
Q

what does it mean if nfinal > ninitial or vise versa?

A

nfinal > ninitial (absorb photon)
nfinal < ninitial (emit photon)

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7
Q

what is calorimetry?

A

g -> mol -> heat

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8
Q

what are the steps of calorimetry?

A

qrxn = -qwater
if qrxn is exothermic, temperature of water will increase
if qrxn is endothermic, temperature of water will decrease

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9
Q

what is the EM spectrum from largest wavelength to smallest?

A

Radio < Microwave < Infrared < Visible < UV < X-ray < Gamma

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