che294f04hmwrk01soln - CHE/MAE 294 F04 Homework 1 Solution...

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CHE/MAE 294 F04 Homework 1 Solution 22.Sept.03 > restart: Problem 1 Materials Scientist - seek to formulate the laws of nature (as applied to materials) in a usable form Materials Engineers - seek to apply the above laws to improve our standard of living (using materials) A materials engineer must be able to communicate with materials scientists for a number of reasons, including a) to obtain the proper formulations to apply b) to obtain help in interpreting the formulation properly c) to understand whether the formulation has been applied properly Problem 2 a) aluminum doorframe - metal b) clay pot - ceramic c) teflon spatula - polymer d) GaAs transitor - semiconductor Problem 3 a) metal + non-metal = ceramic b) metalloid + neighboring = semiconductor Problem 4 The phrase P/Si means P doped into Si. This is the doped semiconductor. Problem 5 Basis: 1 kg Fe + 1.37 g C <== vary the amount of carbon added according to the problem Givens (in SI units) > mFe := 1: mC := 1.37E-3: > readmylib(atomicmasses): > AM[Fe3C] := 3*AM[Fe] + AM[C]; := AM Fe3C 179.552
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Calculations Use stoichiometery to determine the moles of C reacted and mass of Fe3C formed. 3Fe + C -> Fe3C
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che294f04hmwrk01soln - CHE/MAE 294 F04 Homework 1 Solution...

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