Explanation:
As the water vapor touches the mirror the particles of the vapor loses energy and they move less then the process Condensation takes place in which the gas turns into water.
Answer:
The answer to this question has been described in details on the screenshots attached to this question.
Thanks. Hope it helps
Answer:
with four significant digits.
Explanation:
Given,
= 178.5 KJ/mole = 178500 J/mole (1kJ=1000J)
= 161.0 J/mole.K
According to Gibbs–Helmholtz equation:

= Gibbs free energy
= enthalpy change
= entropy change
T = temperature in Kelvin
= +ve, reaction is non spontaneous
= -ve, reaction is spontaneous
= 0, reaction is in equilibrium
As per question the reaction is spontaneous that means the value of
is negative or we can say that the value is less than zero.
Thus



Significant figures are the figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
Thus the temperature is
in kelvins above which this reaction is spontaneous.