Which of the following assumptions appears reasonable for the isothermal process? h20 (liq, 1 bar) → h2o (liq, 1300 bar), t = 20°c. a. au = 0, ah 0 b. au = 0, ah 0 c. au #0, ah = 0 d. none of the above hinn nf diethyl ether using the chen's rule is

Answer : The assumptions appears reasonable for the isothermal process is, and

Explanation :

First law of thermodynamic : It states that the energy can not be created or destroyed, it can only change or transfer from one state to another state.

As per first law of thermodynamic,

The expression for internal energy is:

The expression for enthalpy is:

where,

= internal energy

q = heat

w = work done

n = number of moles

= specific heat capacity at constant volume

= specific heat capacity at constant pressure

= change in temperature

As we know that, the term internal energy and enthalpy is the depend on the temperature and the process is isothermal that means at constant temperature.

T = constant

= 0

So, at constant temperature the internal energy and enthalpy is equal to zero. That means,

and

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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