DDA1EBE1-81C0-4CDC-9E16-A1D4A94F3645.jpeg - amu atomic mass unit = 1/12 of a mass of carbon containing atom silicon 30 amu a 34 969 75 770 34 9 4 9 x 95

DDA1EBE1-81C0-4CDC-9E16-A1D4A94F3645.jpeg - amu atomic mass...

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Unformatted text preview: - amu : atomic mass unit = 1/12 of a mass of carbon containing atom - silicon - 30 amu a ) 34. 969 - 75. 770% 34 . 9 4 9 x . 95 470 = / 26. 496 36 . 9 lele amy = 24. 230 2 36.9 64 X . 24230 = 8. 95 6 35. 45 2: WeSOM b) 6. 015 amu x 7.5 % = 0. 451 125 1.016 am x 92.5% 2 6.4 8 9 6.94 1 = weighted average HW: 15 - 21 15) 10. 013 amu x . 198 = 1. 982574 = 10.812 1 1 . 0 09 amu * . 802 = 8 . 82 9 218 the Helium - 4 is more abundant in nature because the atomic mass is closer to the mass 17 23 . 985 x , 7899 = 18 . 94 57515 /2 19 24. 98 4 x. 1000 = 2. 4986 - =/24. 305 25 . 8982 x. 1101# 2 . 8 6 0 ( 1 8 2 2 18 protons , the atomic number is equal to the number of protons 19) isotope : atoms of the same element with diff. # of protons . Ex : hydrogen 20) since the atomic mass is the weighted average of the number of isotopes in an atom, Ther ru is not an exact amount 2 1 ) N - 14 is more abundant in nature be. It is closest to the average atomic mass...
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