3water within a piston–cylinder assembly, initially at 10 lbf/in.2 , 500°f, undergoes an internally reversible process to 80 lbf/in.2 , 800°f, during which the temperature varies linearly with specific entropy. for the water, determine the work and heat transfer, each in btu/lb. neglect kinetic and potential energy effects.

109.779BTU/lbm and 220.179BTU/lbm

Explanation:

We have the values of Pressure and Temperature,

At the tables, this conditions are for enthalpy and specific energy,

We calculate now the heat transfer for the system,

We can calculate now the work transfer given by,

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

answer///scientific method;