Question

compute the mass-specific enthalpy change associated with Nz that is undergoing a change in state from 400 k to 800 k

Answer 1

The correct answer is "430 kJ/kg". A further explanation is given below.

Step-by-step explanation:

The given values are:

T₁ = 400 k

T₂ = 800 k

The average temperature will be:

=
`(T_1+T_2)/(2)`

=
`(400+800)/(2)`

=
`600 \ k`

From table,

At 600 k the
`C p` will be = 1.075

Now,

⇒ The specific enthalpy =
`Cp(T_2-T_1)`

⇒
`\Delta h=1.075 (800-700)`

⇒
`=430 \ kJ/kg`