Show the solution and diagram.  Outside air in an air conditioning unit has a mass of 52kg at 42oC is mixed with re-circulated air at 32kg at 28oC, find the temperature after mixing. A. 35.23 oC   B. 32.23 oC    C. 36.67 oC     D. 45.3oC

Q: 3 Water at 35 MPa and v = 0.15 m /kg can exist in Select one: a. Superheated only b. Sat. vapor c.…

A: Option a is correct.

Q: N2 gas enters a turbine at P = 275.79 kPa, 130°F and leaves at 101.353 kPa and 80°F. How much heat…

A:

Q: how did you get 51.31°C??  i have tried and tried and nothing gives me that

A:

Q: Heat Exchangers & Boilers are examples of heating units.   true of fulse

A: Heat exchangers and Boilers are the examples of heating units.

Q: Super heated water vapor 1kg, 20 bar, heated from 240c to 280c closed system. How much heat is…

A: Given data: Pressure, P = 20 bar Temperature, T1 = 240°C Temperature, T2 = 280°C

Q: team at 0.029 MPa has a dryness of 60%. Find its Entropy in kJ/kg-k choose the correct final answ

A: Given:Pressure ,P=0.029 MPadryness fraction, x=60 % or 0.6

Q: We have water at 60 bar and 300 C. a. what is the state (vapor, liquid)? b. what is the specific…

A:

Q: Steam undergoes an Isentropic process where it is initially at l:05 upa and 304C. The isentropic…

A:

Q: Cabbage needs to be cooked (boiled) at 250 F. What pressure should the pressure cooker be set for?

A: As we know, pressure is directly proportional to the temperature. And, for phase change, every…

Q: 1. Steam undergoes an Isentropic process where it is imitially at 1 05 upa and 304C. The isentropic…

A: To find: The tsat2, dryness fraction and change in enthalpy. Given: The initial pressure is P1=1.05…

Q: Determine the state of water if P= 0.40 bar and T= 75.87 C. O a. Mixture b. Compressed liquid O c.…

A: It is required to determine the state of water

Q: The equivalent evaporation of a boller is found to be 22500 kg/hr. Stiam is produced at 20 bar…

A: The sloution is given below

Q: . What is the tire pressure when the air returns to 70F?

A: Find tire pressure when the air returns to 70F

Q: 4. At 120 °C, at 60 kPa pressure and 0.2 volume of air, a constant volume of air is heated…

A:

Q: Determine the state of water if P= 0.35 bar and T= 85 C. a. Mixture O b. Compressed liquid C.…

A: Answer: c) Superheated Vapor

Q: How much heat must be removed to cool 50 m³/min of air at 29°C & 21°C wb to 16°C db & 14℃ wb, How…

A:

Q: 2. A reservoir contains 2.83 m3 of CO gas at 6895 Kpa, 23.6C. An evacuated tank is filled from the…

A:

Q: An insulated mixer takes in a 1st stream of air at 1139.54 K with mass flow rate of 1 kg/s and a 2nd…

A:

Q: from these states to a pressure of 6.5 bar. Calculate the power required for drivir the compressor…

A: Given data;     P1=1 bar=100 KN/m2t1=170CT1=17+273=300 KV1=15  m3/minP2=6.5 bar=650 KN/m2 as per…

Q: D. How many Btu need to be added to change 5 lb of ice at 30°F to steam at 215°F? Refer to tables…

A:

Q: A rigid container, perfectly insulated against heat, is divided into two compartments by a curtain.…

A: Solution:

Q: i. ii. iv. Draw a schematic diagram of each problem with labels of states of a substance; For…

A:

Q: 1. What is the enthalpy of saturated steam (water) at 20°C and 73°F in both kJ/kg and BTU/lbm?

A:

Q: Find the velocity of the steam at the exit of the nozzle

A: Given data: Dry saturated steam at a:      pressure(p1)=10 barIt leaves at a:      pressue(p2)=1 bar…

Q: Create a PH diagram for Refrigeration and Cryogenic Plant for Oxygen Production, using multiple…

A: A PH diagram, also known as a pressure-enthalpy diagram, is a graphical representation of the…

Q: Instruction: a. Draw a schematic diagram of each problem with labels of states of a substance; b.…

A: Given: P1=8 MPaT1=300oCP2=2 MPaP3=1.5 MPaT3=300oCP4=1 MPaP5=0.01 MPaT10=207oC To find:  a)…

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.