Identify the state of matter for a, b, and c.

a) particles are close together in random positions with about equal kinetic energy and intermolecular forces.
b) particles are close together in fixed positions with low kinetic energy
c) particles are far apart with greater kinetic energy and low intermolecular forces

a) solid < liquid < gas
b) gas < liquid < solid
c) liquid = solid < gas
d) liquid < gas = solid

Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick

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.

Stage in which a typical star has completely stopped fusion