p41_054 - N x = 10. We solve for n : n = N x (1 . 3 10 38 )...

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54. According to Sample Problem 41-6, N x /N 0 =1 . 3 × 10 38 . Let the number of moles of the lasing material needed be n ;then N 0 = nN A ,where N A is the Avogadro constant. Also
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Unformatted text preview: N x = 10. We solve for n : n = N x (1 . 3 10 38 ) N A = 10 (1 . 3 10 38 )(6 . 02 10 23 ) = 1 . 3 10 15 mol ....
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