Chemistry, 18.11.2020 03:10 saigelthegreat8337
How do chemical reactions, such as burning, differ from physical changes, such as melting and other phase changes?
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If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a
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The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.
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How do chemical reactions, such as burning, differ from physical changes, such as melting and other...
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