Chemistry, 26.03.2020 18:38 markmlg122

The specific enthalpy of liquid n-hexane at 1 atm varies linearly with temperature and equals 25.8 kJ/kg at 30°C and 129.8 kJ/kg at 50°C. Determine the equation that relates ˆ H ( kJ / kg ) Hˆ(kJ/kg) to T(°C) and calculate the reference temperature on which the given enthalpies are based. Then derive an equation for ˆ U ( T ) ( kJ / kg ) Uˆ(T)(kJ/kg) at 1 atm. Calculate the heat transfer rate required to cool liquid n-hexane flowing at a rate of 20 kg/min from 60°C to 25°C at a constant pressure of 1 atm. Estimate the change in specific internal energy (kJ/kg) as the n-hexane is cooled at the given conditions.

Answers: 1

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 17:30

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

Answers: 2

Answer

Chemistry, 22.06.2019 20:00

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:

Answers: 3

Answer

Chemistry, 23.06.2019 00:30

Fred is studying a substance that is made out of only one element. this means that

Answers: 1

Answer

Chemistry, 23.06.2019 08:00

Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.

Answers: 3

Answer

You know the right answer?

The specific enthalpy of liquid n-hexane at 1 atm varies linearly with temperature and equals 25.8 k...

Questions