<span>This is a physical property. Physical properties involve changes of phase, or state of matter, of which melting is an example. Melting involves a change from a solid state to a liquid state. The internal energy of the solid increases, usually by applying heat, which increases the temperature to the melting point of the substance.</span>
Answer:
A) m =
B) m =
Explanation:
A) a process at the constant external pressure Pf,
We Know that
W = mgh-------------------------(1)
W=---------------------------(2)
Equating (1) and(2)
mgh =
=
Therefore m =
B)In a irreversible process
W = mgh----------------------(3)
---------------------(4)
PV =nRT
P =
W =
W=
W=
W=
From EQ(3)
mgh=
m =
Is really don’t know it like that sorry