Consider a gas of N non-interacting molecules enclosed in a container of volume V0. Focus attention on any sub volume V of this container and denote by N the number of molecules located within this sub volume. Each molecule is equally likely to be located anywhere within the container; hence the probability that a given molecule is located within the subvolume V is simply equal to V/V0 a) What is the mean number ¯N of molecules located within V? Express your answer in terms of N0, V0 and V. (b) Find the relative dispersion in the number molecule located within V. Express in terms of ¯N, V and V0
¯¯¯¯
( ¯N-N/ N¯ )^2/N¯
(c) What does the answer to part (b) become when V< (d)What value should the dispersion ¯¯¯¯
( ¯N-N/ N¯ ) assume when V > V0 ? Does the answer to part (b) agree with this expectation

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

i think the answer is a and b

i wish you luck