please answer number 6 (b) the specille t computations for air whose density is
ID: 1884607 • Letter: P
Question
please answer number 6
(b) the specille t computations for air whose density is 0.00129 g cmJ. Te ll O is 29; that is, the mass of 1 kilomole of air is 29 kg 1-4 Estimate the pressure you exert on the floor when standing. Express the answer in atmospheres and in Torr. 1-5 One standard atmosphere is defined as the pressure produced by a column of mercury exactly 76 cm high, at a temperature of 0°C, and at a point where g 980.665 cm s-2 (a) Why do the temperature and the acceleration of gravity have to be specified in this definition? (b) Compute the pressure in Nm produced by a column of mercury of density 13.6 g cm , 76 em in height at a point where g 980 cm s-2. 2. Ead Figure 1-6 1-6 Two containers of gas are connected by a long, thin, thermally insulated tube. Container A is surrounded by an adiabatic boundary, but the temperature of container B can be varied by bringing it into contact with a body C at a different temperature. In Fig. 1-6, these systems are shown with a variety of boundaries. Which figure represents (a) an open system enclosed by an adiabatic boundary; (b) an open system enclosed by a diathermal boundary; () a closed system enclosed by a diathermal boundary; (d) a closed system enclosed by an adiabatic boundary.Explanation / Answer
6. Given
a. an open system with adiabnatic boundary
diathermic bounary : heat exchangei s possible ( thin weall)
open : mass exchange is possible
we can seee in figure 1, and 4 the systems are open
and in 4, there is adiabaticboubndary
hence
figure 4 is open system with adiabatic boundary
b. open system enclosed by diathermic boundary
figure 1 has diathermic boundary adn open system
c. closed system diathermic boundary
figuew 2 ( because heat exchanfge is possibe throgh B)
d. closed syustem with adiabatic boundary
figure 3 (becausxe hat echange is wuithin the system so adiabatic conditions)
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