Write the letters of the systems that are in equilibrium. a) A helium balloon th

Question

Write the letters of the systems that are in equilibrium.

a) A helium balloon that is perfectly sealed and has been at a steady temperature for three hours.

b) A glass of water with two ice cubes in it on a table in a restaurant.

c) A propane tank that contains some liquid propane and some gaseous

propane.

d) A water bottle, completely full, that you had in the freezer for a few days. You

just took it out and set it on your kitchen counter.

e) The same water bottle, completely melted, after sitting on your counter for a

few days.

Explanation / Answer

(C) and (e) systems are in equilibrium.

(A) is not in equilibrium because helium has lighter in wait then air so its tend to go upward.

(B) is not in equilibrium because the phase change of ice is going on till it completly converted into water.

(D) is not in equilibrium because the ice in bottle keep on changing in water due to atmospheric condition.

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