One kilogram of water (v= 1,003 cm /kg) in a piston/cylinder device at 25°c and 1 bar is compressed in a mechanically reversible, isothermal process to 1,500 bar. determine the amount of heat transferred (q), work (w), change of enthalpy (ah), change of internal energy (au) and change of entropy (as). given that b = 250x 10k and k = 45x 10 bar! you may assume that v is a constant at its arithmetic average value.

Which type of stress results when two plates push against one another? a. compression b. tension c. force d. shear

The pressure in a fluid is affected by which characteristics of that fluid

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.