Acertain object has a very high specific heat. the object is heated over a flame for 1 minute. the flame is shut off, and the object is allowed to cool down for one minute. the object most likely: a. heats up quickly and cools down quickly. b. heats up quickly and cools down slowly. c. heats up slowly and cools down quickly. d. heats up slowly and cools down slowly.

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.

Classify this reaction: 2al+n2-> aln.

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves