Air 30 psia 630 R 450 ft/s Ma = 1 nozzle

Q: A 0.4m³ rigid tank contains air at 37 °C and pressure 250 kPa. (R= 0.2968 kJ/kg-K) The specific…

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Q: Air enters a nozzle at 200 KPa, 360 K and a velocity of 180 meter per second . Assuming isentropic…

A: Given: T = 360 K V = 180 m/s k = 1.4

Q: Consider 2 kg of air has a decrease of internal energy of 25 kJ while its Celsius temperature is…

A: Given data,  m= 2kg,  ΔU = -25 kJ (decreases , so taken as negative)  If T1 is the initial…

Q: 5- An aircraft is flying at an altitude of (12000 m) (T = 216.65 k, P = 0.193bar) at a Mach number…

A: Given data: The altitude of aircraft can be given as h = 12000 m The temperature at the given…

Q: When is the flow through a control volume steady?

A: The process in which fluid flowing through the control volume flows steadily, then it is termed as…

Q: Helium gas expands isentropically from 2.2 MPa and 77°C to 0.4 MPa. Calculate the ratio of the…

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Q: A diatomic gas in 15-L rigid container at 25 ⁰C and 4.8 atm is heated to 40 ⁰C. Determine the change…

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Q: Air flows steadily through a varying cross-sectional area duct such as a nozzle at a mass flow rate…

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Q: perature are 200 kPa and 300 K, respectively, determine the following: (a) A for flow from inlet to…

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Q: What do you understand by flow work? Is it different from displacement work?

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Q: Air at 14 psia, 40°F, and a Mach number of 2.0 is forced to turn upward by a ramp that makes an 8°…

A: Consider the following assumption: The flow is steady. The boundary layer on the wedge is very…

Q: Given that μ = − 0.062 K atm–1 for helium, calculate the energy that must be removed as heat to…

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Q: 83 psia, from the isentropic flow of nitrogen gas in a 2-in-ID pipe. At the first point, the…

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Q: In a central air-conditioning system, 72 kg per hour of air at 15 degree celsius and 1.1 bar enters…

A: Given data: mass flow rate of air = 72 kg/hr = 0.02 kg/s Temperature of air = 15oC =15+273=288 K…

Q: Under steady-flow conditions, the fluid properties at an inlet or exit remain constant (do not…

A: During a steady flow extensive(dependent on mass) or intensive(independent on mass) property of…

Q: b) Air flows through a cylindrical duct at a rate of 2.3 kg/s. Friction between air and the duct and…

A: Given: For air, The mass flow rate, m = 2.3 kg/s The inlet temperature, T1 = 450 K The inlet…

Q: in an isentropic manner, 19.6 m^3/min of air are compressed from 233.14 K and 283.82 kPa to 1306.56…

A: Given data: V˙=19.6 m3/min=0.3267 m3/sT1=233.14 KP1=283.82 kPaP2=1306.56 kPa Need to determine the…

Q: (i) Define mass and volume flow rates. How are they related to each other?

A: Mass – Mass is a quantitative measure of inertia and it is the fundamental property of all matter.…

Q: Air is flowing in a wind tunnel at 12°C and 66 kPa at a velocity of 190 m/s. The Mach number of the…

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Q: Air with an initial density of 1.285 kg/m³ is passed through a compressor with an inlet diameter of…

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Q: Air flows through a nozzle from a large vessel in which the pressure and temperature are 500 kPa and…

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Q: A desktop computer is to be cooled by a fan whose flow rate is 0.40 m3/min. Determine the mass flow…

A: mass flow rate : mass flow rate = density * volumetric flow rate = density * Area * Velocity

Q: 9.2- lbm of water at 300 psia fill a weighted pistoncylinder device whose volume is 2.5 ft. The…

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Q: A rigid vessel of volume 0.86 m° contains 1 kg of steam at a pressure of 2 bar. Evaluate the…

A: Answer: (a) Specific volume is 0.86 m3/kg. (b) Temperature is 120.21 ℃. (c) Dryness fraction is…

Q: 1- An ideal gas with k = 1.4 is flowing through a nozzle such that the Mach number is 2.4 where the…

A: To find: The flow area at the location where the Mach number is 1.2. Given: The gas is ideal, and…

Q: A 0.2 m³ vessel contains 120 kg of water at 90 °C. Determine pressure, specific and total internal…

A: Given data:

Q: An aircraft is reported to be cruising in still air at −20°C and 40 kPa at a Mach number of 0.86.…

A: Given: The Mach number of the aircraft is Ma=0.86. The temperature of the air is T=-20°C. The…

Q: A nozzle takes in steam with negligible velocity. and specific enthalpy. of 3·3 MJ/kg. The velocity…

A: Write the expression for SFEE.

Q: Air at 100 kPa and 25°C flows in a horizontal duct of variable cross section. The water column in…

A: Given : The pressure inlet = 100 kPa The air temperature = 25°C The difference in the height of…

Q: A desktop computer is to be cooled by a fan whose flow rate is 0.40 m3/min. Determine the mass flow…

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Q: Q.1. Air flow adiabatically in a constant area duct. At the inlet of the duct, the Mach number,…

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Q: Air expands isentropically from 2.2 MPa and 77°C to 0.4 MPa. Calculate the ratio of the initial to…

A: Given Data At state 1 P1=2.2MPa  T1=77°C   At state 2 P2=0.4MPa   For air  γ=1.4

Q: Q/ At the inlet of an adiabatic duct with constant cross-sectional area, the pressure, the…

A: Inlet temperature = 289 K Inlet pressure = 122 KPa Inlet velocity = 127 m/s Length = 6.5 m Diameter…

Q: pressure of steam 400 C and u = 2949 kJ/kg is most nearly

A: Given,  Temperature = 400o C u = 2949 kJ / kg   P=2951.3−29492951.3−2945.2× 0.5+11.5=1.698MPa Using…

Q: 1 atm = 2116 lb/ft2 = 1.01 × 105 N/m2. In the reservoir of a supersonic wind tunnel, the velocity is…

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Q: The flow rate of methanol at 20°C (? = 788.4 kg/m3 and ? = 5.857×10−4 kg/m·s) through a…

A: ρ = 788.4 kg/m3μ = 5.857 x 10-4 kg/m s heigh difference in manometer = 11 cm pressure difference due…

Q: Air flows steadily adiabatically through a pipe with a cross-sectional of 0.002 m. At the inlet of…

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Q: Air enters a nozzle at 200 KPa, 360 K and a velocity of 180 meter per second . Assuming isentropic…

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Q: hot air is compressed polytropically so that the quantity pvn is constant. if 0.02m3 of air at…

A: Given Data  Atmospheric pressure, P1=101.3 KPA Gauge pressure, P2=405+101.3=506.3 Kpa Initial…

Q: In an experiment , a certain amount of air is heated at constant pressure from 1,7 cubic meters,20…

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Q: Air at 98 kPa and 20° C flows in a horizontal duct of variable cross section. The water column in…

A: The temperature of the air is T=20°C. The pressure of the air is P=98 kPa. The vertical displacement…

Q: 5.1. Air is flowing steadily and adiabatically through a pipe 2.5 cm internal diameter and 15 m…

A: given data air is flowing steadily and adiabatically through a pipe d = 2.5cm internal diameter l =…

Q: A 0.2 m³ vessel contains 188kg of water at 90 °C. Determine pressure, specific and total interna…

A: Given:V=0.2 m3m=188 KgT=90°C

Q: Is aircon-ditioner an example of thermodynamic system inside the house? Is it an open system, closed…

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Q: Air enters a 5-cm-diameter duct at Mach number = 0.2, a temperature of 550 K and a pressure of 200…

A: Given Data The diameter of the duct is: d=5 cm The mach number at inlet is: M1=0.2 The inlet…

Q: Refrigerant R-134a at 500 kPa and 171 ⁰C enters an adiabatic nozzle steadily  with a velocity of 15…

A: Given information: At inlet T1 = 171 °CP1 =500 kPa = 5 barv1 =15 cm/s = 0.15 m/s At outlet T2  = 20°…

Q: Air flows steadily adiabatically through a pipe with a cross-sectional of 0.002 m?. At the inlet of…

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Q: Explain why the maximum flow rate per unit area for a given ideal gas depends only on P0 /√T0. For…

A: Given The gas is ideal. The specific heat ratio, . The gas constant, . We have for maximum flow…

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.