A spherical balloon with a diameter of 9 m is filled with helium at 20°C and 210 kPa. Determine the mole number and the mass of the helium in the balloon. Take the molar mass of helium to be 4.003 kg/kmol. The universal gas constant is kJ kmol-K Ru = 8.31447 "2²) = 8.31447 kPa-m³ kmol-K kPa.m³ kJ The mole number of the helium balloon is The mass of the helium balloon is kg. kmol.

Q: Use the Ideal Gas Law to show how pressure and temperature are related in the case of two footballs…

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Q: Air at a volume of 0.03m³, is at a pressure of 3.5 bar and 35°C respectively. Determine: i. the mass…

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Q: In a capillary tube water with enthalpy equal to 1,983 kJ/kg is throttled to a pressure of 900 kPa.…

A: Given: Initial enthalpy h1=1983kJ/kgHeat loss (Q)=62kJ/kgExit pressure P2=900kPa Assumption:…

Q: Compare the pressure of 30 kg of air in a vessel of temperature 300 K and volume 8 m3 by considering…

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Q: The air conditioning process in the humidifier, air at a dry bulb temperature of 20˚C and RH of 35%…

A: Given: Dry bulb temperature of the air is 20˚C . Initial relative humidity is 35 %. Final relative…

Q: Define specific heats. Differentaite between specific heats at constant pressure and constant…

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Q: Four pounds of air are contained at 20psig and 100°F. What is the volume of the container?

A: Given:Mass of air, m=4 lbsPressure of air, P=20psigTemperature of air, T=100°F

Q: Carrie is trying to figure out the number of calories in a cube of cheese. To do this, she pours…

A: Given : V = 199.7 mL = 199.7 cm3 T1 = 19.8 C m = 5.23 g T2 = 47.9 C To find : Calories of heat…

Q: 8. The weight density of a soil is given by y = 15+ 0.75h, where y is in KN/m³, and h is in meters.…

A: Given: Weight density of the soil, y= 15 + 0.75h, where y is in kN/m^3 and h is in meters. Depth, h=…

Q: ! Required information A piston-cylinder device contains 0.66 kg of steam at 300°C and 0.5 MPa.…

A: Here we will use the steam table to infer the values.

Q: A box contains a mixture of small copper spheres and small lead spheres. The total volume of both…

A: Given data

Q: 0.110 mol of argon gas is admitted to an evacuated 60 cm^3 container 50 degrees C.  The container is…

A: Given : n = 0.110 mol Ti = 50°C V=60 cm3 Tf = 500 °C

Q: According to Mayer’s equation the relationship between two specific heat capacities and gas constant…

A: The expression for the Mayer’s equation is given by, cp-cv=R  …………1 Here, cp is the specific heat at…

Q: 1.040 lbm of water fills a container whose volume is 2.040 ft3 . The pressure in the container is…

A: Mass of water (m) = 1.04 Ibm Volume of container (V)=  2.04 ft3Pressure in the container (P)= 100…

Q: A rubber balloon is filled with 1 L of air at 1 atm and 300 K and is then cooled to 100 K. The…

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Q: Methanol (SG=0.792) is contained in a large tank under a pressure of 350000 Pa absolute. When a…

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Q: and 0.75 m3/kg. using equation Dz=(dz/dx)y*dx + (dz/dy)x*dy, determine the change in pressure…

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Q: An oxygen tank has a volume of V = 3.00 m3. The gage pressure of oxygen in the tank is Pgage =…

A: Given Data: Volume of Tank VT=3 m3 Gage the pressure of oxygen Pg=400 kPa The atmospheric pressure…

Q: Determine the volume of 3 kg of saturated water with a quality of 60% and a pressure of 150 kPa.

A: Answer: The volume of 3 kg of saturated water with a quality of 60% and a pressure of 150 kPa is…

Q: The air conditioning process in the humidifier, air at a dry bulb temperature of 20˚C and RH 10%…

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Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.