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What are the main sources of electrical resistance in a metal?
The factors that affect the electrical resistance of a metal are impurity, temperature and alloying. The free mean path of an electron is the mean distance it travels between successive collisions. For an ideal crystal with no impurities and imperfections the mean free path at 0 K s infinite. That is, there are no collisions and the electrical conductivity is ideally infinite. Introduction of solute atoms into the crystal results in collisions, reducing the mean free path and the conductivity.
Number of rooms, their size and allocation: Count the number of rooms including ancillaries (if any). Estimate their size and note the allocation of the main lab, preparatory room
Ammonia is oxidized with air to form nitric oxide in the first step to produce nitric acid. The reaction occurs in a well insulated continuous reactor based on the stoichiometry:
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Applications of permanent magnets a - Applications based on attraction or repulsion forces b - Applications based on Faraday's induction law c- Application based on Lor
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