final_sample - Sample Final for Chem 1A Constants constant...

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Sample Final for Chem 1A, 12/05/08 Constants constant value unit Planck’s constant ( h ) 6 . 626 × 10 - 34 J · s Rydberg constant ( R H ) 2 . 178 × 10 - 18 J speed of light 2.997924 × 10 8 m/s Avogadro’s number 6 . 022 × 10 23 gas constant (R) 8 . 31451 J/K · mol gas constant (R) 0 . 08206 L · atm/K · mol electron charge ( e ) 1 . 6022 × 10 - 19 C electron mass 9 . 1094 × 10 - 31 kg Proton mass 1 . 67252 × 10 - 27 kg Neutron mass 1 . 67495 × 10 - 27 kg Handy numbers constant value unit Rydberg energy ( R H ) 2 . 178 × 10 - 18 J R H × N A 1312 kJ λ of photon with E = R H 91.45 nm ν of photon with E = R H 3 . 278 × 10 15 Hz λ of electron with E = R H 0.3326 nm speed of electron with E = R H 218.7 km/s Proton/electron mass 1836 Neutron/electron mass 1839 Conversions from to conversion Fahrenheit Celsius o C = ( o F - 32 o F ) × 5 o C 9 o F Celsius Fahrenheit o F = 9 o F 5 o C × ( o C ) + 32 o F Celsius Kelvin K = ( o C + 273 . 15 o C ) ( 1 K 1 o C ) atm torr 1 atm = 760 torr atm Pa 1 atm = 101,325 Pa Typical bond energies in kJ/mol Type Bond energy Type Bond energy Type Bond energy Type Bond energy H-H 436 H-C 413 C-S 272 O=O 498 C-C 348 H-N 391 C=O 741 C=S 477 N-N 170 C-N 308 C=C 611 C C 837 C=N 615 H-O 366 HP 322 CF 485
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2 1. Light and matter waves, one-electron ions
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