principles of electronic materials and devices_third edition (전자재료물성 및 소자공학)

principles of electronic materials and devices_third edition (전자재료물성 및 소자공학)

principles of electr.zip

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설명 : 전자재료물성 및 소자공학 3판 솔루션입니다. 제목 : principles of electronic materials and devices 판 : 3판 저자 : S. O. Kasap 출판사 : McGrawHill Solutions to Principles of Electronic Materials and Devices: 3rd Edition (13 May 2005) Chapter 1..... 1.1Third Edition ( 2005 McGraw-Hill)

1.2 Atomic mass and molar fractions a. Consider a multicomponent alloy containing N elements. If w1, w2, ..., wN are the weight fractions of components 1,2,..., N in the alloy and M1, M2, ..., MN, are the respective atomic masses of the elements, show that the atomic fraction of the i-th component is given by a. Suppose that n1, n2, n3,…, ni,…, nN are the atomic fractions of the elements in the alloy, n1 + n2 + n3 +… + nN = 1 Suppose that we have 1 mole of the alloy. Then it has ni moles of an atom with atomic mass Mi (atomic fractions also represent molar fractions in the alloy). Suppose that we have 1 gram of the alloy. Since wi is the weight fraction of the i-th atom, wi is also the mass of i-th element in grams in the alloy. The number of moles in the alloy is then wi/Mi. Thus, Number of moles of element i = wi/Mi Number of moles in the whole alloy = w1/M1 + w2/M2 +…+ wi/Mi +…+wN/MN Molar fraction or the atomic fraction of the i-th elements is therefore,

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