Refrigerant 134a enters a horizontal pipe operating at steady state at 40 oC, 300 kPa and a velocity of 40 m/s. At the exit, the temperature is 50 oC and the pressure is 240 kPa. The pipe diameter is 0.04 m. Determine

a) the mass flow rate of the refrigerant, in kg/s

b) the velocity at the exit, in m/s

c) the rate of heat transfer between the pipe and its surroundings, in kW

568.98

explanation:

its math

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i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!